This page lists 86 drivetrain parts for the 2006 Cadillac STS, across 27 part types, covering both the 3.6L V6 and the 4.4L V8 Supercharged. Every part shows its brand, manufacturer part number and fitment notes.
On the 2006 Cadillac STS, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 29 parts of the 86 listed are CV Axle (16 parts), Axle Shaft Seal (7 parts) and Differential Pinion Bearing / Race (6 parts). The other 24 part types cover the remaining 57 parts.
The 2006 Cadillac STS was sold with both the 3.6L V6 and the 4.4L V8 Supercharged. 11 parts fit every engine; the other 75 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2006 Cadillac STS drivetrain parts are GM GENUINE (19 parts), BCA (10 parts) and SKF (8 parts), plus 19 more brands. Quality grades include Standard Replacement and Economy.
12 parts on this 2006 Cadillac STS page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GM GENUINE 291331 (Axle Shaft Seal) and HERI 70091 (CV Axle). Click any part number to see every vehicle that part fits.
Axle Intermediate Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Fits: 3.6L V6 | 223240 | 🇺🇸 US 🇨🇦 CA | Front Left InnerAWD | View on Amazon |
This table covers the seals at the Axle Intermediate Shaft. 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 2006 Cadillac STS — TIMKEN 223240.
Axle Shaft Lock / Snap Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 90223082 | 🇺🇸 US 🇨🇦 CA | Fits Rear5 speed Automatic trans. | View on Amazon |
This table covers the Axle Shaft Lock / Snap rings.
One part is listed for the 2006 Cadillac STS — GM GENUINE 90223082.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: all 2006 STS engines | 291331 | 🇺🇸 US 🇨🇦 CA | Fits RearOutside Diameter of Lip | View on Amazon |
| NATIONAL Popular Fits: all 2006 STS engines | 711066 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rearwith 4.378 IN Ring Gear | View on Amazon |
| NATIONAL Fits: 3.6L V6 | 710853 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| SKF Fits: all 2006 STS engines | 12720 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left | View on Amazon |
| TIMKEN Fits: all 2006 STS engines | 223240 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Rear | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.6L V6 | WS710853 | 🇺🇸 US 🇨🇦 CA | FrontAWD | View on Amazon |
| WJB / INMOTION PARTS Fits: all 2006 STS engines | WS711066 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rearwith Getrag 645 Differential | 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.
7 Axle Shaft Seal parts for the 2006 Cadillac STS come from 5 brands — NATIONAL, WJB / INMOTION PARTS, GM GENUINE and 2 other brands. The "Popular" part is GM GENUINE 291331. 5 parts fit every engine; the other 2 are engine-specific.
Part numbers include GM GENUINE 291331, NATIONAL 711066 and NATIONAL 710853, among others listed above.
CV Axle
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HERI Popular Fits: 3.6L V6 | 70091 | 🇺🇸 US 🇨🇦 CA | Rear LeftAWD | View on Amazon |
| CARDONE Fits: 3.6L V6 | 601416 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| CARDONE Fits: 3.6L V6 | 601455 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APWI Popular Fits: 3.6L V6 | GM8387 | 🇺🇸 US 🇨🇦 CA | Front LeftAWD | View on Amazon |
| APWI Popular Fits: 3.6L V6 | GM8388 | 🇺🇸 US 🇨🇦 CA | Front RightAWD | View on Amazon |
| CARDONE Fits: 3.6L V6 | 661454 | 🇺🇸 US 🇨🇦 CA | Rear LeftAWD | View on Amazon |
| GSP Fits: 3.6L V6 | NCV17001 | 🇺🇸 US 🇨🇦 CA | Rear LeftAWD | View on Amazon |
| TOP NOTCH Fits: 3.6L V6 | TN20120 | 🇺🇸 US 🇨🇦 CA | Rear LeftAWD | View on Amazon |
| TRAKMOTIVE Fits: 3.6L V6 | GM8224 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does Not Include ABS Ring | View on Amazon |
| TRAKMOTIVE Fits: 3.6L V6 | GM8225 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Does Not Include ABS Ring | View on Amazon |
| TRAKMOTIVE Fits: 3.6L V6 | GM8223 | 🇺🇸 US 🇨🇦 CA | Does Not Include ABS Ring | View on Amazon |
| TRAKMOTIVE Fits: 3.6L V6 | GM8212 | 🇺🇸 US 🇨🇦 CA | Does Not Include ABS Ring | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GSP Fits: 4.4L V8 Supercharged | NCV17001 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TOP NOTCH Fits: 4.4L V8 Supercharged | TN20120 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| TRAKMOTIVE Fits: 4.4L V8 Supercharged | GM8224 | 🇺🇸 US 🇨🇦 CA | Does Not Include ABS Ring | View on Amazon |
| TRAKMOTIVE Fits: 4.4L V8 Supercharged | GM8225 | 🇺🇸 US 🇨🇦 CA | Does Not Include ABS Ring | View on Amazon |
This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes.
16 CV Axle parts for the 2006 Cadillac STS come from 6 brands — TRAKMOTIVE, CARDONE, APWI and 3 other brands. The "Popular" part is HERI 70091.
The Economy section lists 3 options from CARDONE and HERI — the catalog's value-priced group. HERI 70091 is listed in this group.
In the Standard Replacement grade, TRAKMOTIVE, APWI, CARDONE and 2 other brands supply 9 parts: built to original-equipment specification. A representative part number is APWI GM8387.
4 further parts sit outside the graded sections, with the same engine-level match.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH Fits: all 2006 STS engines | DX515 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Inner | View on Amazon |
| MEVOTECH Fits: all 2006 STS engines | DX437 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Outer | View on Amazon |
| MEVOTECH Fits: all 2006 STS engines | DX877 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear Outer | View on Amazon |
This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
3 CV Joint Boot parts for the 2006 Cadillac STS come from MEVOTECH. Every part fits both the 3.6L V6 and the 4.4L V8 Supercharged.
Listed part numbers: MEVOTECH DX515, MEVOTECH DX437 and MEVOTECH DX877.
Differential Carrier Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2006 STS engines | 11561300 | 🇺🇸 US 🇨🇦 CA | M14X2X101 | View on Amazon |
| GM GENUINE Fits: all 2006 STS engines | 89058602 | 🇺🇸 US 🇨🇦 CA | M8X1.25X30,24 ThreadFlange Head | View on Amazon |
| GM GENUINE Fits: all 2006 STS engines | 11519346 | 🇺🇸 US 🇨🇦 CA | Bolt-HFH with CON WA,M12X1.75X60,34 THD | View on Amazon |
This table covers the Differential Carrier bolts.
GM GENUINE supplies the 3 Differential Carrier Bolt parts for the 2006 Cadillac STS. All of them fit every engine offered in the 2006 STS.
Listed part numbers: GM GENUINE 11561300, GM GENUINE 89058602 and GM GENUINE 11519346.
Differential Cover Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 89058602 | 🇺🇸 US 🇨🇦 CA | M8X1.25X30,24 ThreadFlange Head | View on Amazon |
This table covers the Differential Cover bolts.
This group shows a single part: GM GENUINE 89058602.
Differential Fill / Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 19256069 | 🇺🇸 US 🇨🇦 CA | Includes Seal | View on Amazon |
This table covers the Differential Fill drain plugs.
This group shows a single part: GM GENUINE 19256069.
Differential Pinion Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular Fits: 4.4L V8 Supercharged | NBNP922169 | 🇺🇸 US 🇨🇦 CA | Bearing Only | View on Amazon |
| BCA Popular Fits: 4.4L V8 Supercharged | NBA67 | 🇺🇸 US 🇨🇦 CA | Taper Bearing SetIncludes Cup and Cone | View on Amazon |
| BCA Fits: 4.4L V8 Supercharged | NBNP233028 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| NATIONAL Fits: 4.4L V8 Supercharged | NP233028 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| NATIONAL Fits: 4.4L V8 Supercharged | NP922169 | 🇺🇸 US 🇨🇦 CA | Rear InnerTaper Bearing Cone Style | View on Amazon |
| NATIONAL Fits: 4.4L V8 Supercharged | A67 | 🇺🇸 US 🇨🇦 CA | Taper Bearing Set Includes Cup and Cone | View on Amazon |
This table covers the bearings and races on the differential pinion.
6 Differential Pinion Bearing / Race parts are listed for the 2006 Cadillac STS, from BCA and NATIONAL. BCA NBNP922169 carries the "Popular" badge.
Listed part numbers: BCA NBNP922169, BCA NBA67 and BCA NBNP233028, plus the other parts above.
Differential Pinion Bearing Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 89058602 | 🇺🇸 US 🇨🇦 CA | M8X1.25X30,24 ThreadFlange Head | View on Amazon |
This table covers the Differential Pinion Bearing bolts.
This group shows a single part: GM GENUINE 89058602.
Differential Pinion Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 19179936 | 🇺🇸 US 🇨🇦 CA | FrontUSE without CASTING NUMBER 6507022390 ON HOUSING Front DIFF DRV PINION GEAR FOR 2ND DESIGN SEAL SERVICED SEPARATELY SEE 19132939. | View on Amazon |
| GM GENUINE Fits: 4.4L V8 Supercharged | 19179934 | 🇺🇸 US 🇨🇦 CA | Includes Flange (86mm), Seal, and Nut | View on Amazon |
This table covers the flanges that connect the driveshaft to the differential pinion.
2 Differential Pinion Flange parts for the 2006 Cadillac STS come from GM GENUINE.
Part numbers include GM GENUINE 19179936 and GM GENUINE 19179934.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 4.4L V8 Supercharged | NS99215 | 🇺🇸 US 🇨🇦 CA | Front Outerwith 650 Transmission Code | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
This group shows a single part: BCA NS99215.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 19132939 | 🇺🇸 US 🇨🇦 CA | FrontRadial Lip Design | View on Amazon |
| GM GENUINE Fits: 4.4L V8 Supercharged | 25861283 | 🇺🇸 US 🇨🇦 CA | 6 speed Automatic trans.Can Use Seal Only with Casting # 6457038590 On Housing Diff DRV Pinion Gear,For 1st Design Must Use Seal Kit 19179934. | View on Amazon |
| NATIONAL Fits: 4.4L V8 Supercharged | 710998 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 7.625 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: 4.4L V8 Supercharged | WS710998 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 7.625 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.
4 Differential Pinion Seal parts for the 2006 Cadillac STS come from 3 brands — GM GENUINE, NATIONAL and WJB / INMOTION PARTS.
Listed part numbers: GM GENUINE 19132939, GM GENUINE 25861283 and NATIONAL 710998, plus the other parts above.
Drive Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 4.4L V8 Supercharged | 966509 | 🇺🇸 US 🇨🇦 CA | Length: 61.125" | View on Amazon |
| ULTRA-POWER Fits: 4.4L V8 Supercharged | 938268 | 🇺🇸 US 🇨🇦 CA | 25.63" Long | View on Amazon |
This table covers the driveshafts that carry torque from the transmission or transfer case.
2 Drive Shaft parts are listed for the 2006 Cadillac STS, from DORMAN and ULTRA-POWER.
Part numbers include DORMAN 966509 and ULTRA-POWER 938268.
Drive Shaft Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 11588658 | 🇺🇸 US 🇨🇦 CA | Fits FrontM12X1.75X70 | View on Amazon |
This table covers the Drive Shaft bolts.
This group shows a single part: GM GENUINE 11588658.
Drive Shaft Center Support Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEA / MARMON RIDE CONTROL Fits: 4.4L V8 Supercharged | A60014 | 🇺🇸 US 🇨🇦 CA | MRC Driveline | View on Amazon |
| WESTAR Fits: 4.4L V8 Supercharged | DS6503 | 🇺🇸 US 🇨🇦 CA | Does Not Include Boot or Snap Ring | View on Amazon |
| WJB / INMOTION PARTS Fits: 4.4L V8 Supercharged | WCHB3074A | 🇺🇸 US 🇨🇦 CA | Bearing, Support | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Popular Fits: 4.4L V8 Supercharged | 25141646X | 🇺🇸 US 🇨🇦 CA | Spicer Select | View on Amazon |
| SKF Popular Fits: 4.4L V8 Supercharged | HB3074A | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ANCHOR Fits: 4.4L V8 Supercharged | 6104 | 🇺🇸 US 🇨🇦 CA | Centerwith 30mm Inside Diameter Bearing(s) | View on Amazon |
This table covers the Drive Shaft Center Support 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.
6 Drive Shaft Center Support Bearing parts are listed for the 2006 Cadillac STS, from DEA / MARMON RIDE CONTROL, WESTAR, WJB / INMOTION PARTS and 3 other brands. DANA 25141646X carries the "Popular" badge.
Economy: 3 parts, from DEA / MARMON RIDE CONTROL, WESTAR and WJB / INMOTION PARTS. A representative part number is DEA / MARMON RIDE CONTROL A60014.
The Standard Replacement section: 3 options from DANA, SKF and ANCHOR. DANA 25141646X is listed in this group.
Listed part numbers: DANA 25141646X, DEA / MARMON RIDE CONTROL A60014 and WESTAR DS6503, plus the other parts above.
Gear Oil
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 4.4L V8 Supercharged | VV820 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Popular Fits: 4.4L V8 Supercharged | VV975 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Quart | View on Amazon |
| VALVOLINE Fits: 4.4L V8 Supercharged | 889785 | 🇺🇸 US 🇨🇦 CA | Full Synthetic SAE 75W-90 Gear Oil1 Quart Flex Fill | View on Amazon |
| VALVOLINE Fits: 4.4L V8 Supercharged | 882505 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil1 Gallon | View on Amazon |
| VALVOLINE Fits: 4.4L V8 Supercharged | 723856 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 75W-90 Gear Oil5 Gallon | View on Amazon |
| VALVOLINE Fits: 4.4L V8 Supercharged | VV822 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 75W-90 Gear Oil16 Gallon KEG | 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.
6 Gear Oil parts for the 2006 Cadillac STS come from VALVOLINE. The "Popular" part is VALVOLINE VV820.
Part numbers include VALVOLINE VV820, VALVOLINE VV975 and VALVOLINE 889785, among others listed above.
Transfer Case Drive Chain
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| USA STANDARD GEAR Fits: 4.4L V8 Supercharged | ZTCHHV080 | 🇺🇸 US | BW447637 Links, 1-1/2 Inch Wide | View on Amazon |
This table covers the chains that drive the transfer case.
One part is listed for the 2006 Cadillac STS — USA STANDARD GEAR ZTCHHV080.
Transfer Case Input Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 4.4L V8 Supercharged | NB110 | 🇺🇸 US 🇨🇦 CA | with Borg Warner 4479 Transfer Casewith Full Time 4WD | View on Amazon |
| NATIONAL Fits: 4.4L V8 Supercharged | 110 | 🇺🇸 US 🇨🇦 CA | with Borg-Warner 4479 Transfer Case1 Speed trans. | View on Amazon |
| SCHAEFFLER Fits: 4.4L V8 Supercharged | 6010 | 🇺🇸 US 🇨🇦 CA | 1.969 In Inside Diameter X 3.15 In Outside Diameter X 0.63 In Thick | View on Amazon |
| SKF Fits: 4.4L V8 Supercharged | 6010J | 🇺🇸 US 🇨🇦 CA | 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.
4 Transfer Case Input Shaft Bearing parts for the 2006 Cadillac STS come from 4 brands — BCA, NATIONAL, SCHAEFFLER and 1 other brand.
This group includes BCA NB110, NATIONAL 110 and SCHAEFFLER 6010 and the remaining parts above.
Transfer Case Input Shaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Fits: 4.4L V8 Supercharged | 99199 | 🇺🇸 US 🇨🇦 CA | Shaft Diameter: 2.000 In | View on Amazon |
This table covers the wear sleeves used to restore a Transfer Case Input Shaft seal surface.
One part is listed for the 2006 Cadillac STS — SKF 99199.
Transfer Case Input Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 4.4L V8 Supercharged | NS710651 | 🇺🇸 US 🇨🇦 CA | with Borg Warner 4479 Transfer Casewith Full Time 4WD | View on Amazon |
| GM GENUINE Fits: 4.4L V8 Supercharged | 88996656 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKF Fits: 4.4L V8 Supercharged | 20010 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| USA STANDARD GEAR Fits: 4.4L V8 Supercharged | ZTSEA1900044028 | 🇺🇸 US | FrontBW4476 Transfer Case, Input Shaft Seal | View on Amazon |
This table covers the seals at the Transfer Case Input Shaft. 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.
4 Transfer Case Input Shaft Seal parts are listed for the 2006 Cadillac STS, from BCA, GM GENUINE, SKF and 1 other brand.
Part numbers include BCA NS710651, GM GENUINE 88996656 and SKF 20010, among others listed above.
Transfer Case Output Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular Fits: 4.4L V8 Supercharged | NB206 | 🇺🇸 US 🇨🇦 CA | Front Outerwith Borg Warner 4479 Transfer Case | View on Amazon |
| BCA Fits: 4.4L V8 Supercharged | NB109 | 🇺🇸 US 🇨🇦 CA | Front Innerwith Borg Warner 4479 Transfer Case | View on Amazon |
| SCHAEFFLER Fits: 4.4L V8 Supercharged | 6206 | 🇺🇸 US 🇨🇦 CA | Bearing & Race Set | View on Amazon |
| SKF Fits: 4.4L V8 Supercharged | 6206J | 🇺🇸 US 🇨🇦 CA | Front Forward | View on Amazon |
| SKF Fits: 4.4L V8 Supercharged | 6009J | 🇺🇸 US 🇨🇦 CA | Rear Forward | View on Amazon |
This table covers the Transfer Case Output 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.
5 Transfer Case Output Shaft Bearing parts are listed for the 2006 Cadillac STS, from BCA, SKF and SCHAEFFLER. BCA NB206 carries the "Popular" badge.
Listed part numbers: BCA NB206, BCA NB109 and SCHAEFFLER 6206, plus the other parts above.
Transfer Case Output Shaft Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 19168733 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Transfer Case Output Shaft bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
One part is listed for the 2006 Cadillac STS — GM GENUINE 19168733.
Transfer Case Output Shaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 4.4L V8 Supercharged | NS99189 | 🇺🇸 US 🇨🇦 CA | Fits Rear | View on Amazon |
This table covers the wear sleeves used to restore a Transfer Case Output Shaft seal surface.
This group shows a single part: BCA NS99189.
Transfer Case Output Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: 4.4L V8 Supercharged | NS710661 | 🇺🇸 US 🇨🇦 CA | Fits Rearwith Borg Warner 4479 Transfer Case | View on Amazon |
| GM GENUINE Fits: 4.4L V8 Supercharged | 88996657 | 🇺🇸 US 🇨🇦 CA | Fits Rear | View on Amazon |
| SCHAEFFLER Fits: 4.4L V8 Supercharged | SS2949 | 🇺🇸 US 🇨🇦 CA | Fits Rearwithout Boot On Seal | View on Amazon |
| SKF Fits: 4.4L V8 Supercharged | 18892 | 🇺🇸 US 🇨🇦 CA | Fits Rear | View on Amazon |
This table covers the seals at the Transfer Case Output Shaft. 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.
4 Transfer Case Output Shaft Seal parts for the 2006 Cadillac STS come from 4 brands — BCA, GM GENUINE, SCHAEFFLER and 1 other brand.
Listed part numbers: BCA NS710661, GM GENUINE 88996657 and SCHAEFFLER SS2949, plus the other parts above.
Transfer Case Planetary Carrier
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 19210917 | 🇺🇸 US 🇨🇦 CA | Axle Shaft Spline Quantity: 38 | View on Amazon |
This table covers the planetary carriers in the transfer case.
This group shows a single part: GM GENUINE 19210917.
Transfer Case Vent
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 4.4L V8 Supercharged | 19180066 | 🇺🇸 US 🇨🇦 CA | SINGLE USE | View on Amazon |
| GM GENUINE Fits: 4.4L V8 Supercharged | 25892279 | 🇺🇸 US 🇨🇦 CA | Vent Stem with Cap | View on Amazon |
This table covers the vents on the transfer case.
GM GENUINE supplies both parts for the 2006 Cadillac STS.
Listed part numbers: GM GENUINE 19180066 and GM GENUINE 25892279.
Buying Drivetrain Parts for a 2006 Cadillac STS
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Some drivetrain parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: CV Axle and Axle Shaft Seal .
Frequently Asked Questions
How many drivetrain parts fit the 2006 Cadillac STS?
Our catalog currently lists 86 drivetrain parts for the 2006 Cadillac STS across 27 subcategories and 22 brands, covering both the 3.6L V6 and the 4.4L V8 Supercharged. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2006 Cadillac STS engines?
Some do. 11 parts fit every engine; the other 75 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of drivetrain problems on a 2006 Cadillac STS?
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 2006 Cadillac STS 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 2006 Cadillac STS?
First match the engine — each row shows which engine(s) the part fits. 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 2006 Cadillac STS
Drivetrain Parts for Other Cadillac STS 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.