281 Drivetrain parts are listed for the 1993 Buick Roadmaster, in 40 part types, covering the 5.7L V8 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1993 Buick Roadmaster, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 99 parts of the 281 listed are Differential Pinion Bearing / Race (40 parts), Differential Rebuild Kit (33 parts) and Differential Ring and Pinion (26 parts). The other 37 part types cover the remaining 182 parts.
The 1993 Buick Roadmaster came with a single engine, the 5.7L V8, and every part is verified against it.
30 brands supply drivetrain parts for the 1993 Buick Roadmaster, led by MOTIVE GEAR (67 parts), RICHMOND (40 parts) and AAM (22 parts), plus 27 more brands. Quality grades include Standard Replacement, Economy and Master Kit.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1993 Buick Roadmaster. 56 parts have it, including MOTIVE GEAR 26018080 (Axle Shaft) and ACDELCO 5707 (Axle Shaft Bearing). Each part number opens a page with every vehicle that part fits.
Axle Shaft
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 630117 | 🇺🇸 US 🇨🇦 CA | Fits Rear LeftBase Model | View on Amazon |
| DORMAN | 630118 | 🇺🇸 US 🇨🇦 CA | Fits Rear LeftEstate Wagon | View on Amazon |
| DORMAN | 630117A | 🇺🇸 US 🇨🇦 CA | Does Not Include Bearing, Seal, or Hardware | View on Amazon |
| RICHMOND | 9225100 | 🇺🇸 US 🇨🇦 CA | Excel30.375" Overall Length | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular | 26018080 | 🇺🇸 US 🇨🇦 CA | Shaft Length: 30.375 In | View on Amazon |
| USA STANDARD GEAR Popular | ZAK630117 | 🇺🇸 US 🇨🇦 CA | Axle Shaft Kit30-3/8" Length | View on Amazon |
| USA STANDARD GEAR | ZAK630118 | 🇺🇸 US 🇨🇦 CA | Axle Shaft KitIncludes Axle, Wheel Bearing, Seal, Studs & Lug Nuts | View on Amazon |
| USA STANDARD GEAR | USA10208 | 🇺🇸 US 🇨🇦 CA | 31.8" Length30 Spline | View on Amazon |
| USA STANDARD GEAR | USA21278 | 🇺🇸 US | 30 Spline30-3/8" Length | View on Amazon |
This table covers the Axle shafts.
9 Axle Shaft parts for the 1993 Buick Roadmaster come from 4 brands — USA STANDARD GEAR, DORMAN, RICHMOND and 1 other brand. The "Popular" part is MOTIVE GEAR 26018080.
The Economy section lists 4 options from DORMAN and RICHMOND — the catalog's value-priced group. DORMAN 630117 is listed in this group.
In the Standard Replacement grade, USA STANDARD GEAR and MOTIVE GEAR supply 5 parts: built to original-equipment specification. A representative part number is MOTIVE GEAR 26018080.
Part numbers include MOTIVE GEAR 26018080, DORMAN 630117 and DORMAN 630118, among others listed above.
Axle Shaft Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH | HRP5707 | 🇺🇸 US 🇨🇦 CA | Repair BearingOutside Diameter: 58.31 mm | View on Amazon |
| MEVOTECH | HRP6408 | 🇺🇸 US 🇨🇦 CA | Repair Bearing | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 5707 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| BCA Popular | NBRP5707 | 🇺🇸 US 🇨🇦 CA | Repair Bearing | View on Amazon |
| ACDELCO | RP6408 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalRepair Bearing | View on Amazon |
| BCA | NBRP6408 | 🇺🇸 US 🇨🇦 CA | Repair Bearing | View on Amazon |
| MOTIVE GEAR | KIT5707 | 🇺🇸 US 🇨🇦 CA | Axle Differential Bearing and Seal Kit | View on Amazon |
| SCHAEFFLER | DR0148K | 🇺🇸 US 🇨🇦 CA | Repair Bearing | View on Amazon |
| SCHAEFFLER | 102549 | 🇺🇸 US 🇨🇦 CA | Repair Bearing | View on Amazon |
This table covers the Axle Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
9 Axle Shaft Bearing parts for the 1993 Buick Roadmaster come from 5 brands — MEVOTECH, ACDELCO, BCA and 2 other brands. The "Popular" part is ACDELCO 5707.
The Economy section: 2 options from MEVOTECH. MEVOTECH HRP5707 is listed in this group.
Standard Replacement: 7 parts, from ACDELCO, BCA, SCHAEFFLER and 1 other brand. A representative part number is ACDELCO 5707.
Listed part numbers: ACDELCO 5707, MEVOTECH HRP5707 and MEVOTECH HRP6408, plus the other parts above.
Axle Shaft Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 81050 | 🇺🇸 US 🇨🇦 CA | Axle Shaft Lock Assortment | View on Amazon |
| GM GENUINE | 03833322 | 🇺🇸 US 🇨🇦 CA | Rear Axle8.50/8.625 Ring Gear Saginaw - American Axle | View on Amazon |
| MOTIVE GEAR | 3833322 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5"/8.625" | View on Amazon |
| MOTIVE GEAR | 344171 | 🇺🇸 US 🇨🇦 CA | RearGM 7.5"/7.625" | View on Amazon |
This table covers the Axle Shaft retainers and clips.
4 Axle Shaft Retainer / Clip parts are listed for the 1993 Buick Roadmaster, from MOTIVE GEAR, DORMAN and GM GENUINE.
Listed part numbers: DORMAN 81050, GM GENUINE 03833322 and MOTIVE GEAR 3833322, plus the other parts above.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 8835S | 🇺🇸 US 🇨🇦 CA | RearCab & Chassis or Wagon | View on Amazon |
This table covers the seals where an axle shaft exits the housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 1993 Buick Roadmaster — NATIONAL 8835S.
Differential Carrier
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | XL5036 | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| RICHMOND | XL5045 | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular | GM86L | 🇺🇸 US 🇨🇦 CA | 30 Spline | View on Amazon |
| MOTIVE GEAR | GM76L | 🇺🇸 US 🇨🇦 CA | RearGM 7.625" (10 Bolt) | View on Amazon |
| MOTIVE GEAR | 26010481 | 🇺🇸 US 🇨🇦 CA | Differential Gear Case1.31 in. Dia 28/30 Spline | View on Amazon |
| MOTIVE GEAR | GM10L30 | 🇺🇸 US 🇨🇦 CA | 30 SplineDifferential Gear Case Kit | View on Amazon |
| MOTIVE GEAR | GM76E | 🇺🇸 US 🇨🇦 CA | RearGM 7.625" (10 Bolt) | View on Amazon |
This table covers the carriers that hold the differential gears in the axle.
7 Differential Carrier parts are listed for the 1993 Buick Roadmaster, from MOTIVE GEAR and RICHMOND. RICHMOND XL5036 carries the "Popular" badge.
Economy: 2 parts, from RICHMOND. A representative part number is RICHMOND XL5036.
The Standard Replacement section: 5 options from MOTIVE GEAR. MOTIVE GEAR GM86L is listed in this group.
Part numbers include RICHMOND XL5036, RICHMOND XL5045 and MOTIVE GEAR GM86L, among others listed above.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH | HLM501349 | 🇺🇸 US 🇨🇦 CA | RearEstate Wagon | View on Amazon |
| WJB / INMOTION PARTS | WTLM501314 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTLM501349 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Popular | BR72 | 🇺🇸 US 🇨🇦 CA | Rearwith 7.50 Ring Gear | View on Amazon |
| TIMKEN Popular | LM501314 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| TIMKEN Popular | LM501349 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| ACDELCO | S13 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentIncludes Cup & Cone | View on Amazon |
| BCA | NBLM501314 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA | NBLM501349 | 🇺🇸 US 🇨🇦 CA | Rearwith GMC Axle(s) | View on Amazon |
| GM GENUINE | S1413 | 🇺🇸 US 🇨🇦 CA | Includes Cup and Cone | View on Amazon |
| RICHMOND | 2900131 | 🇺🇸 US 🇨🇦 CA | Bearing & Race Kit or Differential Bearing Kit | View on Amazon |
| SCHAEFFLER | LM501314 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SCHAEFFLER | KLM501349 | 🇺🇸 US 🇨🇦 CA | Bearing Only | View on Amazon |
| SKF | LM501314VP | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
This table covers the bearings and races that support the differential carrier.
14 Differential Carrier Bearing / Race parts are listed for the 1993 Buick Roadmaster, from WJB / INMOTION PARTS, SKF, TIMKEN and 6 other brands. SKF BR72 carries the "Popular" badge.
Economy: 3 parts, from WJB / INMOTION PARTS and MEVOTECH. A representative part number is MEVOTECH HLM501349.
The Standard Replacement section: 11 options from SKF, TIMKEN, BCA and 4 other brands. SKF BR72 is listed in this group.
Differential Carrier Shim
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular | SS12 | 🇺🇸 US 🇨🇦 CA | Super shimsStackable Carrier Shim Kit | View on Amazon |
| RICHMOND Popular | 3800061 | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| MOTIVE GEAR | SS10 | 🇺🇸 US 🇨🇦 CA | Differential Carrier Shim Kit | View on Amazon |
| MOTIVE GEAR | GM10MSK | 🇺🇸 US 🇨🇦 CA | Differential Carrier Shim Kit or Differential Carrier and pinion shim Kit | View on Amazon |
| MOTIVE GEAR | GM75MSK | 🇺🇸 US 🇨🇦 CA | Carrier And Pinion Shim Kit | View on Amazon |
| RICHMOND | 3800071 | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
This table covers the Differential Carrier shims.
6 Differential Carrier Shim parts for the 1993 Buick Roadmaster come from 2 brands — MOTIVE GEAR and RICHMOND. The "Popular" part is MOTIVE GEAR SS12.
This group includes MOTIVE GEAR SS12, RICHMOND 3800061 and MOTIVE GEAR SS10 and the remaining parts above.
Differential Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 697700 | 🇺🇸 US 🇨🇦 CA | Rear8.5" Ring Gear | View on Amazon |
| SKP Popular | SK697700 | 🇺🇸 US 🇨🇦 CA | Fits Rear8.5" Ring Gear | View on Amazon |
| AAM | 40027020 | 🇺🇸 US 🇨🇦 CA | Rearwith 10 Bolt Cover | View on Amazon |
| AAM | 40039162 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.5 (In) Axle | View on Amazon |
| AAM | 74030007 | 🇺🇸 US 🇨🇦 CA | Rearwith 10 Bolt Cover | View on Amazon |
| ATP | 111101 | 🇺🇸 US 🇨🇦 CA | Includes Gasket and Internal Magnet | View on Amazon |
This table covers the Differential covers.
6 Differential Cover parts for the 1993 Buick Roadmaster come from 4 brands — AAM, DORMAN, SKP and 1 other brand. The "Popular" part is DORMAN 697700.
Part numbers include DORMAN 697700, SKP SK697700 and AAM 40027020, among others listed above.
Differential Cover Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM | 4000216910 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| AAM | 40002169 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.5 (In) Axle | View on Amazon |
This table covers the Differential Cover bolts.
AAM supplies both parts for the 1993 Buick Roadmaster.
Part numbers include AAM 4000216910 and AAM 40002169.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | RDS550281 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.5 (In) Ring Gear | View on Amazon |
| GM GENUINE Popular | 15807693 | 🇺🇸 US 🇨🇦 CA | Rear8.50/8.625 Ring Gear Saginaw - American Axle | View on Amazon |
| AAM | 40018901 | 🇺🇸 US 🇨🇦 CA | with 8.5 (In) Rear AxleAxle Housing Cover | View on Amazon |
| DORMAN | 926050 | 🇺🇸 US 🇨🇦 CA | Includes Bolts | View on Amazon |
| MAHLE / CLEVITE | P27857 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| MAHLE / CLEVITE | P27857TC | 🇺🇸 US 🇨🇦 CA | Cork with Metal CarrierAxle Housing Cover Gasket | View on Amazon |
| MOTIVE GEAR | 3993593 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5"/8.625" (10 Bolt) | View on Amazon |
| MOTIVE GEAR | 5110 | 🇺🇸 US 🇨🇦 CA | RearGM 7.5"/7.625" (10 Bolt) | View on Amazon |
| VICTOR REINZ | 711482200 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.500 IN Ring Gear | View on Amazon |
This table covers the gaskets that seal the Differential Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
9 Differential Cover Gasket parts are listed for the 1993 Buick Roadmaster, from MAHLE / CLEVITE, MOTIVE GEAR, FEL-PRO and 4 other brands. FEL-PRO RDS550281 carries the "Popular" badge.
Part numbers include FEL-PRO RDS550281, GM GENUINE 15807693 and AAM 40018901, among others listed above.
Differential Cross Pin
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular | 84565109 | 🇺🇸 US 🇨🇦 CA | 8.50/8.625 Ring Gear Saginaw - American Axle10 Bolt Differential | View on Amazon |
| MOTIVE GEAR Popular | 14006401 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Shaft | View on Amazon |
| AAM | 40048063 | 🇺🇸 US 🇨🇦 CA | Rearwith 10 Bolt Cover | View on Amazon |
| RICHMOND | CSPGM85 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Shaft | View on Amazon |
| RICHMOND | XL5640 | 🇺🇸 US 🇨🇦 CA | EXCelDifferential Pinion Shaft | View on Amazon |
| RICHMOND | CSPGM75 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Shaft | View on Amazon |
| RICHMOND | XL5630 | 🇺🇸 US 🇨🇦 CA | EXCelDifferential Pinion Shaft | View on Amazon |
| RICHMOND | 8002721 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Shaft | View on Amazon |
This table covers the Differential Cross pins.
8 Differential Cross Pin parts for the 1993 Buick Roadmaster come from 4 brands — RICHMOND, GM GENUINE, MOTIVE GEAR and 1 other brand. The "Popular" part is GM GENUINE 84565109.
Listed part numbers: GM GENUINE 84565109, MOTIVE GEAR 14006401 and AAM 40048063, plus the other parts above.
Differential Crush Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM | 400103551 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| RICHMOND | 1900041 | 🇺🇸 US 🇨🇦 CA | RearGM 8.25" IFS, 8.5"/8.625" | View on Amazon |
This table covers the Differential Crush sleeves.
2 Differential Crush Sleeve parts for the 1993 Buick Roadmaster come from 2 brands — AAM and RICHMOND.
This group includes AAM 400103551 and RICHMOND 1900041.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM | 40007601 | 🇺🇸 US 🇨🇦 CA | with 8.5 (In) Rear Axle | View on Amazon |
This table covers the Differential Fill drain plugs.
One part is listed for the 1993 Buick Roadmaster — AAM 40007601.
Differential Gear Installation Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | 831021B | 🇺🇸 US 🇨🇦 CA | Install Kit Includes Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, Pinion Seal, Ring Gear Bolts, Shims (Pinion, Carrier), and Thread Locking Compound | View on Amazon |
| RICHMOND Popular | XL1021B | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| MOTIVE GEAR | GM85IK | 🇺🇸 US 🇨🇦 CA | Differential Gear Install Kit | View on Amazon |
| MOTIVE GEAR | GM75IK | 🇺🇸 US 🇨🇦 CA | Differential Gear Install Kit | View on Amazon |
| RICHMOND | XL1044B | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| RICHMOND | 831044B | 🇺🇸 US 🇨🇦 CA | Install Kit Includes Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, Pinion Seal, Ring Gear Bolts, Shims (Pinion, Carrier), and Thread Locking Compound | View on Amazon |
This table covers the Differential Gear Installation kits.
6 Differential Gear Installation Kit parts for the 1993 Buick Roadmaster come from 2 brands — RICHMOND and MOTIVE GEAR. The "Popular" part is RICHMOND 831021B.
Part numbers include RICHMOND 831021B, RICHMOND XL1021B and MOTIVE GEAR GM85IK, among others listed above.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WTM88048 | 🇺🇸 US 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| FAMOUS BRAND | SM802011 | 🇺🇸 US 🇨🇦 CA | RearInner | View on Amazon |
| FAMOUS BRAND | SM88010 | 🇺🇸 US 🇨🇦 CA | RearOUTER | View on Amazon |
| FAMOUS BRAND | SM802048 | 🇺🇸 US 🇨🇦 CA | RearInner | View on Amazon |
| ULTRA-POWER | WTM88048 | 🇺🇸 US 🇨🇦 CA | RearOUTER | View on Amazon |
| ULTRA-POWER | WTM802048 | 🇺🇸 US 🇨🇦 CA | RearINNER | View on Amazon |
| WJB / INMOTION PARTS | WTM802011 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTM88010 | 🇺🇸 US 🇨🇦 CA | RaceCup Outside Diameter (In): 2.6880000000000002 In | View on Amazon |
| WJB / INMOTION PARTS | WTNP926068 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTM802048 | 🇺🇸 US 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Popular | BR52 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 8.50 Ring Gear | View on Amazon |
| TIMKEN Popular | M88010 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| TIMKEN Popular | M802011 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| TIMKEN Popular | M88048 | 🇺🇸 US 🇨🇦 CA | Rear Outer | View on Amazon |
| TIMKEN Popular | M802048 | 🇺🇸 US 🇨🇦 CA | Rear Inner | View on Amazon |
| ACDELCO | M86610X | 🇺🇸 US 🇨🇦 CA | GoldRace | View on Amazon |
| BCA | NBM88010 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA | NBM802011 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA | NBM88048 | 🇺🇸 US 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBM802048 | 🇺🇸 US 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBBR52 | 🇺🇸 US 🇨🇦 CA | Bearing & Race | View on Amazon |
| GM GENUINE | 09413427 | 🇺🇸 US 🇨🇦 CA | Outerwith Cup | View on Amazon |
| GM GENUINE | S1420 | 🇺🇸 US 🇨🇦 CA | Inner8.50/8.625 Ring Gear Saginaw - American Axle | View on Amazon |
| MOTIVE GEAR | 706016XR | 🇺🇸 US 🇨🇦 CA | Koyo Bearings | View on Amazon |
| MOTIVE GEAR | R10RPK | 🇺🇸 US 🇨🇦 CA | KitKoyo Bearings | View on Amazon |
| MOTIVE GEAR | R75GRTPK | 🇺🇸 US 🇨🇦 CA | Pinion Bearing Kit Includes Timken Pinion Bearings, Brush, Crush Sleeve, Marking Compound, Pinion Nut, Pinion Seal, Pinion Shims, and Thread Locking Compound | View on Amazon |
| MOTIVE GEAR | R10RTPK | 🇺🇸 US 🇨🇦 CA | Pinion Bearing Kit Includes Timken Pinion Bearings, Brush, Crush Sleeve, Marking Compound, Pinion Nut, Pinion Seal, Pinion Shims, and Thread Locking Compound | View on Amazon |
| SCHAEFFLER | M88010 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SCHAEFFLER | KM86649 | 🇺🇸 US 🇨🇦 CA | Repair | View on Amazon |
| SCHAEFFLER | KM802048 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| SCHAEFFLER | KT63 | 🇺🇸 US 🇨🇦 CA | Rear Outer8.50" Ring Gear | View on Amazon |
| SCHAEFFLER | KM88048 | 🇺🇸 US 🇨🇦 CA | Rear Outer1.313 In Inside Diameter X 2.688 In Outside Diameter X 0.875 In Thick | View on Amazon |
| SCHAEFFLER | HM89210 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SCHAEFFLER | KHM89249 | 🇺🇸 US 🇨🇦 CA | Rear Inner28.8290 mm Width | View on Amazon |
| SKF | M86610VP | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF | M88010VP | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF | HM89210 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF | NP926068 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF | HM89249 | 🇺🇸 US 🇨🇦 CA | 1.156" Widthwith 1.437 In. Bearing Inside Diameter | View on Amazon |
| SKF | NP457992 | 🇺🇸 US 🇨🇦 CA | with 1.6250 In. Bearing Inside Diameter | View on Amazon |
This table covers the bearings and races on the differential pinion.
40 Differential Pinion Bearing / Race parts for the 1993 Buick Roadmaster come from 10 brands — SKF, SCHAEFFLER, WJB / INMOTION PARTS and 7 other brands. The "Popular" part is WJB / INMOTION PARTS WTM88048. Economy and Standard Replacement are all represented, and Standard Replacement alone accounts for 30 parts.
Differential Pinion Bearing Baffle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 12479162 | 🇺🇸 US 🇨🇦 CA | .062-.068 THK | View on Amazon |
| MOTIVE GEAR | 4111 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Bearing Spacer | View on Amazon |
This table covers the baffles that control oil at the pinion bearings.
2 Differential Pinion Bearing Baffle parts for the 1993 Buick Roadmaster come from 2 brands — GM GENUINE and MOTIVE GEAR.
Listed part numbers: GM GENUINE 12479162 and MOTIVE GEAR 4111.
Differential Pinion Nut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular | 1260823 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Shaft NutPinion Nut | View on Amazon |
| AAM | 9783762 | 🇺🇸 US 🇨🇦 CA | with 8.5 (In) Rear Axle | View on Amazon |
| AAM | 97837621 | 🇺🇸 US 🇨🇦 CA | with 8.5 (In) Rear AxleDrive Pinion Nut | View on Amazon |
| GM GENUINE | 09783762 | 🇺🇸 US 🇨🇦 CA | 8.50/8.625 Ring Gear Saginaw - American Axle10 Bolt Differential | View on Amazon |
| GM GENUINE | 88891763 | 🇺🇸 US 🇨🇦 CA | M108.50/8.625 Ring Gear Saginaw - American Axle | View on Amazon |
This table covers the Differential Pinion nuts.
5 Differential Pinion Nut parts are listed for the 1993 Buick Roadmaster, from AAM, GM GENUINE and MOTIVE GEAR. MOTIVE GEAR 1260823 carries the "Popular" badge.
Listed part numbers: MOTIVE GEAR 1260823, AAM 9783762 and AAM 97837621, plus the other parts above.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WS99193 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| SCHAEFFLER | SR3509 | 🇺🇸 US 🇨🇦 CA | RearCommercial Chassis | View on Amazon |
| SCHAEFFLER | SR3479 | 🇺🇸 US 🇨🇦 CA | Rearwith 7.50 In Ring Gear | View on Amazon |
| SKF | 99152 | 🇺🇸 US 🇨🇦 CA | Shaft Diameter: 1.523 In | View on Amazon |
| SKF | 99193 | 🇺🇸 US 🇨🇦 CA | Shaft Diameter: 1.937 In | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
5 Differential Pinion Repair Sleeve parts are listed for the 1993 Buick Roadmaster, from SCHAEFFLER, SKF and WJB / INMOTION PARTS. WJB / INMOTION PARTS WS99193 carries the "Popular" badge.
Part numbers include WJB / INMOTION PARTS WS99193, SCHAEFFLER SR3509 and SCHAEFFLER SR3479, among others listed above.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Popular | 19273 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.5 Ring Gear | View on Amazon |
| TIMKEN Popular | 2043 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| BCA | NS2043 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith GMC Axle(s) | View on Amazon |
| GM GENUINE | 26064028 | 🇺🇸 US 🇨🇦 CA | Rear Axle8.50/8.625 Ring Gear Saginaw - American Axle | View on Amazon |
| MOTIVE GEAR | 8610 | 🇺🇸 US 🇨🇦 CA | RearGM 7.5"/7.625" (10 Bolt) | View on Amazon |
| MOTIVE GEAR | 2043 | 🇺🇸 US 🇨🇦 CA | RearGM 8.25" IFS, 8.5" | View on Amazon |
| SCHAEFFLER | SS2983 | 🇺🇸 US 🇨🇦 CA | RearCommercial Chassis | View on Amazon |
| SCHAEFFLER | SS2588 | 🇺🇸 US 🇨🇦 CA | Rearwith 7.50 In Ring Gear | View on Amazon |
| SKF | 15315 | 🇺🇸 US 🇨🇦 CA | Rearwith 7.5 Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WS2043 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
This table covers the seals at the differential pinion yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
10 Differential Pinion Seal parts are listed for the 1993 Buick Roadmaster, from SKF, MOTIVE GEAR, SCHAEFFLER and 4 other brands. SKF 19273 carries the "Popular" badge.
Differential Pinion Shaft Lock Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 81048 | 🇺🇸 US 🇨🇦 CA | Differential Shaft Lock Bolt | View on Amazon |
| GM GENUINE | 25872305 | 🇺🇸 US 🇨🇦 CA | .3X18X30, 12.7THD | View on Amazon |
This table covers the Differential Pinion Shaft Lock bolts.
2 Differential Pinion Shaft Lock Bolt parts for the 1993 Buick Roadmaster come from 2 brands — DORMAN and GM GENUINE.
Part numbers include DORMAN 81048 and GM GENUINE 25872305.
Differential Pinion Shim
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular | 1100 | 🇺🇸 US 🇨🇦 CA | Pinion Shim Pack | View on Amazon |
| RICHMOND Popular | 1600901 | 🇺🇸 US 🇨🇦 CA | Rear DifferentialGM 8.5/8.625" | View on Amazon |
| GM GENUINE | 26043991 | 🇺🇸 US 🇨🇦 CA | .040-.044 THK8.50/8.625 Ring Gear Saginaw - American Axle | View on Amazon |
| GM GENUINE | 52030095 | 🇺🇸 US 🇨🇦 CA | .020.025 THK | View on Amazon |
| MOTIVE GEAR | 1104 | 🇺🇸 US 🇨🇦 CA | Pinion Shim Pack | View on Amazon |
| RICHMOND | 3800191 | 🇺🇸 US 🇨🇦 CA | Rear DifferentialGM 7.5"/7.625" | View on Amazon |
This table covers the Differential Pinion shims.
6 Differential Pinion Shim parts are listed for the 1993 Buick Roadmaster, from MOTIVE GEAR, RICHMOND and GM GENUINE. MOTIVE GEAR 1100 carries the "Popular" badge.
This group includes MOTIVE GEAR 1100, RICHMOND 1600901 and GM GENUINE 26043991 and the remaining parts above.
Differential Rebuild Kit
Master Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | XL10441 | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| RICHMOND Popular | XL10211 | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| RICHMOND Popular | 8310211 | 🇺🇸 US 🇨🇦 CA | Master KitTimken Bearings | View on Amazon |
| BCA | NBRA320MK | 🇺🇸 US 🇨🇦 CA | Master Kit | View on Amazon |
| DORMAN | 797102 | 🇺🇸 US 🇨🇦 CA | Rear7.5" Ring Gear | View on Amazon |
| DORMAN | 697102 | 🇺🇸 US 🇨🇦 CA | Rear7.5" Ring Gear | View on Amazon |
| LUK | GDK320MK | 🇺🇸 US 🇨🇦 CA | Master Kit | View on Amazon |
| MOTIVE GEAR | R75GRMK | 🇺🇸 US 🇨🇦 CA | Rear7.5" Ring Gear | View on Amazon |
| MOTIVE GEAR | R10REMK | 🇺🇸 US 🇨🇦 CA | Master Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut | View on Amazon |
| MOTIVE GEAR | R10RMKT | 🇺🇸 US 🇨🇦 CA | with Timken Bearings | View on Amazon |
| MOTIVE GEAR | R10REMKT | 🇺🇸 US 🇨🇦 CA | Master Bearing Kit Includes Timken Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut | View on Amazon |
| MOTIVE GEAR | R75GRMKT | 🇺🇸 US 🇨🇦 CA | Master Bearing Kit Includes Timken Tapered Bearings , Brush, Cover Gasket (or RTV), Crush Sleeve or Preloa | View on Amazon |
| RICHMOND | 8310441 | 🇺🇸 US 🇨🇦 CA | Master KitTimken Bearings | View on Amazon |
| SKF | SDK320MK | 🇺🇸 US 🇨🇦 CA | Master Kit | View on Amazon |
| TIMKEN | DRK321MK | 🇺🇸 US 🇨🇦 CA | Master Kit | View on Amazon |
Mega Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | 831021M | 🇺🇸 US 🇨🇦 CA | Mega KitTimken Bearings | View on Amazon |
| RICHMOND Popular | 831044M | 🇺🇸 US 🇨🇦 CA | Mega KitTimken Bearings | View on Amazon |
| MOTIVE GEAR | R10RSK | 🇺🇸 US 🇨🇦 CA | Super Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut | View on Amazon |
| MOTIVE GEAR | R75GRSK | 🇺🇸 US 🇨🇦 CA | Super Bearing Kit Includes Koyo Tapered Bearings , Brush, Cover Gasket (or RTV), Crush Sleeve or Pre | View on Amazon |
| MOTIVE GEAR | R10RSKT | 🇺🇸 US 🇨🇦 CA | Super Bearing Kit Includes Timken Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut | View on Amazon |
| MOTIVE GEAR | R75GRSKT | 🇺🇸 US 🇨🇦 CA | Super Bearing Kit Includes Timken Tapered Bearings , Brush, Cover Gasket (or RTV), Crush Sleeve or P | View on Amazon |
Standard Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular | DRK321 | 🇺🇸 US 🇨🇦 CA | RearStandard | View on Amazon |
| AAM | 74067026 | 🇺🇸 US 🇨🇦 CA | with 8.5 (In) Rear Axlewith 10 Bolt Cover | View on Amazon |
| BCA | NBRA320 | 🇺🇸 US 🇨🇦 CA | Standard Kit | View on Amazon |
| LUK | GDK320 | 🇺🇸 US 🇨🇦 CA | Standard Kit | View on Amazon |
| MOTIVE GEAR | R10R | 🇺🇸 US 🇨🇦 CA | RearStandard | View on Amazon |
| MOTIVE GEAR | R75GR | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack) | View on Amazon |
| MOTIVE GEAR | R10RT | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Timken Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, Pinion Seal, and Thread Locking Compound | View on Amazon |
| MOTIVE GEAR | R10RET | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Timken Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut | View on Amazon |
| MOTIVE GEAR | R10RE | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Koyo Tapered Bearings, Brush, Cover Gasket (or RTV), Crush Sleeve (or Preload Shim Pack), Marking Compound, Pinion Nut, Pinio | View on Amazon |
| MOTIVE GEAR | R75GRT | 🇺🇸 US 🇨🇦 CA | Bearing Kit Includes Timken Tapered Bearings , Brush, Cover Gasket (or RTV), Crush Sleeve or Preload Shim | View on Amazon |
| SKF | SDK320 | 🇺🇸 US 🇨🇦 CA | Standard Kit | View on Amazon |
| WJB / INMOTION PARTS | WKRA321 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.5 IN Ring Gear | View on Amazon |
This table covers kits that group the bearings, races and seals for a differential rebuild.
33 Differential Rebuild Kit parts for the 1993 Buick Roadmaster come from 9 brands — MOTIVE GEAR, RICHMOND, BCA and 6 other brands. The "Popular" part is RICHMOND XL10441. They are grouped as Master Kit, Mega Kit and Standard Kit, with Master Kit the largest group at 15 parts from MOTIVE GEAR, RICHMOND, DORMAN and 4 other brands.
Differential Ring and Pinion
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | GM75OE | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| RICHMOND Popular | GM75TK | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| RICHMOND Popular | GM85 | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| RICHMOND Popular | GM75 | 🇺🇸 US 🇨🇦 CA | EXCel | View on Amazon |
| DORMAN | 697713 | 🇺🇸 US 🇨🇦 CA | Rear28 Spline | View on Amazon |
| DORMAN | 697714 | 🇺🇸 US 🇨🇦 CA | Rear28 Spline | View on Amazon |
| DORMAN | 697302 | 🇺🇸 US 🇨🇦 CA | Rear28 Spline | View on Amazon |
| DORMAN | 697304 | 🇺🇸 US 🇨🇦 CA | Rear28 Spline | View on Amazon |
| DORMAN | 697306 | 🇺🇸 US 🇨🇦 CA | Rear28 Spline | View on Amazon |
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR | G885 | 🇺🇸 US 🇨🇦 CA | Motive Gear Performance | View on Amazon |
| MOTIVE GEAR | G875X | 🇺🇸 US 🇨🇦 CA | Performance | View on Amazon |
| MOTIVE GEAR | G875 | 🇺🇸 US 🇨🇦 CA | Performance26 Spline or 28 Spline | View on Amazon |
| MOTIVE GEAR | G975 | 🇺🇸 US 🇨🇦 CA | Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | 4900171 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5"/8.625" (10 Bolt) | View on Amazon |
| RICHMOND Popular | 4900441 | 🇺🇸 US 🇨🇦 CA | RearGM 7.5"/7.625" (10 Bolt) | View on Amazon |
| AAM | 26066706 | 🇺🇸 US 🇨🇦 CA | with 3.73 Axle Ratiowith 8.5 (In) Rear Axle | View on Amazon |
| AAM | 40053031 | 🇺🇸 US 🇨🇦 CA | with 4.10 Axle Ratiowith 8.5 (In) Rear Axle | View on Amazon |
| AAM | 40053802 | 🇺🇸 US 🇨🇦 CA | with 4.56 Axle Ratiowith 8.5 (In) Rear Axle | View on Amazon |
| AAM | 40053029 | 🇺🇸 US 🇨🇦 CA | with 3.42 Axle Ratiowith 8.5 (In) Rear Axle | View on Amazon |
| AAM | 40127810 | 🇺🇸 US 🇨🇦 CA | with 3.08 Axle Ratiowith 8.5 (In) Rear Axle | View on Amazon |
| AAM | 40108742 | 🇺🇸 US 🇨🇦 CA | with 3.23 Axle Ratiowith 8.5 (In) Rear Axle | View on Amazon |
| MOTIVE GEAR | GM10A | 🇺🇸 US 🇨🇦 CA | A-Line Ring and Pinion | View on Amazon |
| MOTIVE GEAR | GM75A | 🇺🇸 US 🇨🇦 CA | A-Line Ring and Pinion | View on Amazon |
| MOTIVE GEAR | GM75 | 🇺🇸 US 🇨🇦 CA | 26 Spline or 28 Spline | View on Amazon |
| MOTIVE GEAR | GM10 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5"/8.625" (10 Bolt) | View on Amazon |
| RICHMOND | 4900051 | 🇺🇸 US 🇨🇦 CA | RearGM 7.5"/7.625" (10 Bolt) | View on Amazon |
This table covers the ring-and-pinion gear sets that set the axle ratio.
26 Differential Ring and Pinion parts are listed for the 1993 Buick Roadmaster, from MOTIVE GEAR, RICHMOND, AAM and 1 other brand. RICHMOND GM75OE carries the "Popular" badge. They are grouped as Economy, High Performance and Standard Replacement, with Standard Replacement the largest group at 13 parts from AAM, MOTIVE GEAR and RICHMOND.
Differential Ring Gear Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM | 40061033 | 🇺🇸 US 🇨🇦 CA | 7/16" x 20 x .88" - Left Hand 6 PT Serrated Hex with Adhesivewith 8.5 (In) Rear Axle | View on Amazon |
| GM GENUINE | 11610549 | 🇺🇸 US 🇨🇦 CA | 8.50/8.625 Ring Gear Saginaw - American Axle10 Bolt Differential | View on Amazon |
| MOTIVE GEAR | 14066913 | 🇺🇸 US 🇨🇦 CA | Ring Gear Bolt | View on Amazon |
| MOTIVE GEAR | PB1792L | 🇺🇸 US 🇨🇦 CA | Rear DifferentialGM 7.5"/7.625" | View on Amazon |
This table covers the Differential Ring Gear bolts.
4 Differential Ring Gear Bolt parts are listed for the 1993 Buick Roadmaster, from MOTIVE GEAR, AAM and GM GENUINE.
Part numbers include AAM 40061033, GM GENUINE 11610549 and MOTIVE GEAR 14066913, among others listed above.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 782390 | 🇺🇸 US 🇨🇦 CA | InletBase Model | View on Amazon |
This table covers the seals at the Differential. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
This group shows a single part: ELRING 782390.
Differential Spider Gear
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | XL4050 | 🇺🇸 US 🇨🇦 CA | ExcelDifferential Carrier Gear Kit | View on Amazon |
| RICHMOND Popular | XL4042 | 🇺🇸 US 🇨🇦 CA | ExcelDifferential Carrier Gear Kit | View on Amazon |
| PRO-KING | 742G717A | 🇺🇸 US 🇨🇦 CA | Differential Gear SetRear Differential | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM | 74040441 | 🇺🇸 US 🇨🇦 CA | Differential Spider and Pinion Gear Kit | View on Amazon |
| MOTIVE GEAR | GM10BI30 | 🇺🇸 US 🇨🇦 CA | Differential Carrier Gear Kit30 Spline | View on Amazon |
| MOTIVE GEAR | GM76BI | 🇺🇸 US 🇨🇦 CA | Differential Carrier Gear Kit28 Spline | View on Amazon |
This table covers the Differential Spider gears.
6 Differential Spider Gear parts are listed for the 1993 Buick Roadmaster, from RICHMOND, MOTIVE GEAR, PRO-KING and 1 other brand. RICHMOND XL4050 carries the "Popular" badge.
Economy: 3 parts, from RICHMOND and PRO-KING. A representative part number is RICHMOND XL4050.
The Standard Replacement section: 3 options from MOTIVE GEAR and AAM. AAM 74040441 is listed in this group.
This group includes RICHMOND XL4050, RICHMOND XL4042 and PRO-KING 742G717A and the remaining parts above.
Differential Spool
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND Popular | XL5140 | 🇺🇸 US 🇨🇦 CA | ExcelDifferential Mini Spool | View on Amazon |
| RICHMOND Popular | 8110281 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5" (10 Bolt) | View on Amazon |
| MOTIVE GEAR | FS1030 | 🇺🇸 US 🇨🇦 CA | 30 SplineFull Spool | View on Amazon |
| MOTIVE GEAR | FS1028 | 🇺🇸 US 🇨🇦 CA | 28 SplineFull Spool | View on Amazon |
| RICHMOND | 8110301 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5" (10 Bolt) | View on Amazon |
| RICHMOND | 8110331 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5" (10 Bolt) | View on Amazon |
This table covers the spools that lock the differential side gears together.
6 Differential Spool parts for the 1993 Buick Roadmaster come from 2 brands — RICHMOND and MOTIVE GEAR. The "Popular" part is RICHMOND XL5140.
Part numbers include RICHMOND XL5140, RICHMOND 8110281 and MOTIVE GEAR FS1030, among others listed above.
Differential Washer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Popular | 3984818 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Gear Thrust Washer | View on Amazon |
| GM GENUINE | 03984818 | 🇺🇸 US 🇨🇦 CA | .797 I.D. 1.70 O.D.8.50/8.625 Ring Gear Saginaw - American Axle | View on Amazon |
| MOTIVE GEAR | 559291 | 🇺🇸 US 🇨🇦 CA | Differential Pinion Gear Thrust Washer | View on Amazon |
| MOTIVE GEAR | RGB4LW | 🇺🇸 US 🇨🇦 CA | GM 7.5" or 7.625"Lock Washer | View on Amazon |
| MOTIVE GEAR | 1235873 | 🇺🇸 US 🇨🇦 CA | RearGM 8.5"/8.625" | View on Amazon |
This table covers the Differential washers.
5 Differential Washer parts are listed for the 1993 Buick Roadmaster, from MOTIVE GEAR and GM GENUINE. MOTIVE GEAR 3984818 carries the "Popular" badge.
Listed part numbers: MOTIVE GEAR 3984818, GM GENUINE 03984818 and MOTIVE GEAR 559291, plus the other parts above.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 986573 | 🇺🇸 US 🇨🇦 CA | Length: 60" | View on Amazon |
| WJB / INMOTION PARTS | WDS86573 | 🇺🇸 US 🇨🇦 CA | RearTagged 07841078 | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
2 Drive Shaft parts for the 1993 Buick Roadmaster come from 2 brands — DORMAN and WJB / INMOTION PARTS.
Part numbers include DORMAN 986573 and WJB / INMOTION PARTS WDS86573.
Drive Shaft Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 14018700 | 🇺🇸 US 🇨🇦 CA | 5/16-24 X 1-11/32, Hex | View on Amazon |
This table covers the Drive Shaft bolts.
One part is listed for the 1993 Buick Roadmaster — GM GENUINE 14018700.
Drive Shaft End Yoke
Strap Style (Easier to Install)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular | 19540029 | 🇺🇸 US 🇨🇦 CA | 8.50/8.625 Ring Gear Saginaw - American Axle10 Bolt Differential | View on Amazon |
| MOTIVE GEAR Popular | MG3R8500 | 🇺🇸 US 🇨🇦 CA | 30 Spline | View on Amazon |
| DORMAN | 697500 | 🇺🇸 US 🇨🇦 CA | Rear Differential30 Spline | View on Amazon |
| RICHMOND | 962520 | 🇺🇸 US 🇨🇦 CA | Excel30 Spline | View on Amazon |
U-Bolt Style (Stronger)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| RICHMOND | 962521 | 🇺🇸 US 🇨🇦 CA | Excel30 Spline | View on Amazon |
| RICHMOND | 962521K | 🇺🇸 US 🇨🇦 CA | Excel30 Spline | View on Amazon |
This table covers the Drive Shaft End yokes.
6 Drive Shaft End Yoke parts are listed for the 1993 Buick Roadmaster, from RICHMOND, GM GENUINE, MOTIVE GEAR and 1 other brand. GM GENUINE 19540029 carries the "Popular" badge.
The Strap Style (Easier to Install) section lists 4 options from GM GENUINE, MOTIVE GEAR, DORMAN and 1 other brand — grouped under the catalog's "Strap Style (Easier to Install)" designation — the notes column spells out what sets them apart. GM GENUINE 19540029 is listed in this group.
The U-Bolt Style (Stronger) section lists 2 options from RICHMOND — grouped under the catalog's "U-Bolt Style (Stronger)" designation — the notes column spells out what sets them apart. RICHMOND 962521 is listed in this group.
Part numbers include GM GENUINE 19540029, MOTIVE GEAR MG3R8500 and DORMAN 697500, among others listed above.
Drive Shaft Slip Yoke
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AAM | 7812557 | 🇺🇸 US 🇨🇦 CA | Rear Driveshaft at Transmission | View on Amazon |
| DORMAN | 697557 | 🇺🇸 US 🇨🇦 CA | Fits Rear Driveshaft at TransmissionCommercial Chassis | View on Amazon |
This table covers the Drive Shaft Slip yokes.
2 Drive Shaft Slip Yoke parts for the 1993 Buick Roadmaster come from 2 brands — AAM and DORMAN.
Part numbers include AAM 7812557 and DORMAN 697557.
Drive Shaft Slip Yoke Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 8673526 | 🇺🇸 US 🇨🇦 CA | Non-Booted | View on Amazon |
This table covers the seals at the Drive Shaft Slip Yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
One part is listed for the 1993 Buick Roadmaster — GM GENUINE 8673526.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL | 104361 | 🇺🇸 US 🇨🇦 CA | Synthetic Gear Lube Limited Slip 75W-901 Quart | View on Amazon |
This table covers the gear oils specified for the axle or transfer case. Typical signs include a low-oil lamp, knocking, or oil that has gone thin before the next interval. Match the viscosity and spec in the notes, not just the weight on the bottle.
One part is listed for the 1993 Buick Roadmaster — MOBIL 104361.
Gear Oil Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| USA STANDARD GEAR | USA15018 | 🇺🇸 US | Friction ModifierPositraction Additive | View on Amazon |
This table covers the Gear Oil additives.
One part is listed for the 1993 Buick Roadmaster — USA STANDARD GEAR USA15018.
Ring Gear Spacer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR | 085050C | 🇺🇸 US 🇨🇦 CA | Rear DifferentialGM 8.5"/8.625" | View on Amazon |
| MOTIVE GEAR | 085050 | 🇺🇸 US 🇨🇦 CA | Ring Gear Spacer10 Bolt | View on Amazon |
| MOTIVE GEAR | 075050 | 🇺🇸 US 🇨🇦 CA | Ring Gear Spacer | View on Amazon |
| MOTIVE GEAR | 075050C | 🇺🇸 US 🇨🇦 CA | Rear DifferentialGM 7.5"/7.625" | View on Amazon |
This table covers the Ring Gear spacers.
MOTIVE GEAR supplies the 4 Ring Gear Spacer parts for the 1993 Buick Roadmaster.
Listed part numbers: MOTIVE GEAR 085050C, MOTIVE GEAR 085050 and MOTIVE GEAR 075050, plus the other parts above.
Transfer Case Input Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | PTS1030 | 🇺🇸 US 🇨🇦 CA | Stator to Input Shaft Bearing | View on Amazon |
| PIONEER | 768036 | 🇺🇸 US 🇨🇦 CA | Stator to Input Shaft Bearing | View on Amazon |
This table covers the Transfer Case Input Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
2 Transfer Case Input Shaft Bearing parts are listed for the 1993 Buick Roadmaster, from ATP and PIONEER.
This group includes ATP PTS1030 and PIONEER 768036.
Universal Joint
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA | 153147X | 🇺🇸 US 🇨🇦 CA | SVLGreasable | View on Amazon |
| DANA | 253147X | 🇺🇸 US 🇨🇦 CA | Spicer SelectGreasable | View on Amazon |
| WJB / INMOTION PARTS | UJT235 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Bearing Greaseable | View on Amazon |
| WJB / INMOTION PARTS | UJT534G | 🇺🇸 US 🇨🇦 CA | Grade Type: STD-Greaseable | View on Amazon |
| WJB / INMOTION PARTS | UJT234 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Non-Greaseable | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Popular | 234 | 🇺🇸 US 🇨🇦 CA | Super StrengthNon-Greasable | View on Amazon |
| DANA | 5795X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Non-Greasable | View on Amazon |
| FVP | 2153105 | 🇺🇸 US 🇨🇦 CA | PerformanceGreasable | View on Amazon |
| GMB | 2153105 | 🇺🇸 US 🇨🇦 CA | PerformanceGreasable | View on Amazon |
| MOOG | 235 | 🇺🇸 US 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
| SKF | UJ234 | 🇺🇸 US 🇨🇦 CA | Brute Force Non Greaseable | View on Amazon |
| SKF | UJ235 | 🇺🇸 US 🇨🇦 CA | Brute Force Greaseable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GMB Popular | 2103105 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Cross | View on Amazon |
| MOOG Popular | 534G | 🇺🇸 US 🇨🇦 CA | Greasable | View on Amazon |
| SKF Popular | UJ534G | 🇺🇸 US 🇨🇦 CA | Greaseable | View on Amazon |
| AAM | 40103777 | 🇺🇸 US 🇨🇦 CA | Fits Rear Shaftwith 1344 U-Joints | View on Amazon |
| ACDELCO | 45U0108 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| DANA | 53147X | 🇺🇸 US 🇨🇦 CA | SpicerGreasable | View on Amazon |
| GM GENUINE | 23104840 | 🇺🇸 US 🇨🇦 CA | with Internal Snap Ringswith Saginaw Prop Shafts | View on Amazon |
This table covers the U-joints in the driveshaft.
19 Universal Joint parts are listed for the 1993 Buick Roadmaster, from DANA, WJB / INMOTION PARTS, MOOG and 6 other brands. MOOG 234 carries the "Popular" badge.
Economy: 5 parts, from WJB / INMOTION PARTS and DANA. A representative part number is DANA 153147X.
The Heavy Duty section lists 7 options from MOOG, SKF, DANA and 2 other brands — rated for severe service. MOOG 234 is listed in this group.
The Standard Replacement section: 7 options from GMB, MOOG, SKF and 4 other brands. GMB 2103105 is listed in this group.
Universal Joint Strap Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Popular | 53010 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| SKF Popular | UJ53010 | 🇺🇸 US 🇨🇦 CA | Fits Front0.328 Outside Diameter Bolt Hole | View on Amazon |
| ACDELCO | 45U0505 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| DORMAN | 81001 | 🇺🇸 US 🇨🇦 CA | 1.125" Diameter Bearing CapBolt Holes Center to Center: 1.813" | View on Amazon |
| GMB | 2604105 | 🇺🇸 US 🇨🇦 CA | Rear Driveshaft at Rear Axle | View on Amazon |
| WJB / INMOTION PARTS | UJT53010 | 🇺🇸 US 🇨🇦 CA | Rear Shaft All JointsOE Series: Mechanics 3R Half-Round | View on Amazon |
This table covers the Universal Joint Strap kits.
6 Universal Joint Strap Kit parts are listed for the 1993 Buick Roadmaster, from MOOG, SKF, ACDELCO and 3 other brands. MOOG 53010 carries the "Popular" badge.
This group includes MOOG 53010, SKF UJ53010 and ACDELCO 45U0505 and the remaining parts above.
Universal Joint U-Bolt Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR | MGUB3R | 🇺🇸 US 🇨🇦 CA | Competition Yoke U-BoltIncl. Longer Chromoly U-Bolts/Grade 8 Bolts | View on Amazon |
This table covers the Universal Joint U-Bolt kits.
This group shows a single part: MOTIVE GEAR MGUB3R.
Buying Drivetrain Parts for a 1993 Buick Roadmaster
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Confirm you have the 5.7L V8 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Differential Pinion Bearing / Race and Differential Rebuild Kit .
Frequently Asked Questions
How many drivetrain parts fit the 1993 Buick Roadmaster?
Our catalog currently lists 281 drivetrain parts for the 1993 Buick Roadmaster across 40 subcategories and 30 brands, covering the 5.7L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1993 Buick Roadmaster?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1993 Buick Roadmaster was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1993 Buick Roadmaster?
Every part on this page is matched to the 5.7L V8 engine. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1993 Buick Roadmaster
Drivetrain Parts for Other Buick Roadmaster Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.