This page lists 70 drivetrain parts for the 1973 Checker Aerobus, across 13 part types, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Every part shows its brand, manufacturer part number and fitment notes.
The drivetrain system on the 1973 Checker Aerobus moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Universal Joint (17 parts), Differential Pinion Bearing / Race (16 parts) and Differential Carrier Bearing / Race (9 parts). The other 10 part types cover the remaining 28 parts.
The 1973 Checker Aerobus was sold with both the 4.1L 250cid L6 and the 5.7L 350cid V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
13 brands supply drivetrain parts for the 1973 Checker Aerobus, led by WJB / INMOTION PARTS (16 parts), SKF (16 parts) and DANA (9 parts), plus 10 more brands. Quality grades include Standard Replacement, Economy and Heavy Duty.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1973 Checker Aerobus. 12 parts have it, including WJB / INMOTION PARTS WT25590 (Differential Carrier Bearing / Race) and NATIONAL 02820 (Differential Pinion Bearing / Race). Each part number opens a page with every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Fits: 5.7L 350cid V8 | 51098 | 🇺🇸 US | Rear Inner2.502" OD, 1.5" ID, .437" Wide | 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 1973 Checker Aerobus — MOTIVE GEAR 51098.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: 5.7L 350cid V8 | WT25590 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WT25523 | 🇺🇸 US | Race | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 5.7L 350cid V8 | 25523 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NB25523 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NB25590 | 🇺🇸 US | Rearwith Spicer 44 Axle(S) | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | 382S | 🇺🇸 US | View on Amazon | |
| SKF Fits: 5.7L 350cid V8 | 382SVP | 🇺🇸 US | Race | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | SET75 | 🇺🇸 US | Rear | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Fits: 4.1L 250cid L6 | 382S | 🇺🇸 US | View on Amazon |
This table covers the bearings and races that support the differential carrier.
9 Differential Carrier Bearing / Race parts are listed for the 1973 Checker Aerobus, from SKF, WJB / INMOTION PARTS, BCA and 1 other brand. WJB / INMOTION PARTS WT25590 carries the "Popular" badge.
In the Economy grade, WJB / INMOTION PARTS supplies 2 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WT25590.
The Standard Replacement section lists 6 options from SKF, BCA and NATIONAL — built to original-equipment specification. NATIONAL 25523 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: WJB / INMOTION PARTS WT25590, WJB / INMOTION PARTS WT25523 and NATIONAL 25523, plus the other parts above.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 5.7L 350cid V8 | RDS6629 | 🇺🇸 US | Rearwith Spicer 44 Axle(S) | View on Amazon |
| VICTOR REINZ Fits: 5.7L 350cid V8 | 711481100 | 🇺🇸 US | Rearwith Dana 44 Axle(S) | 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.
2 Differential Cover Gasket parts are listed for the 1973 Checker Aerobus, from FEL-PRO and VICTOR REINZ.
Part numbers include FEL-PRO RDS6629 and VICTOR REINZ 711481100.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WT02820 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WT31520 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WT02872 | 🇺🇸 US | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WT31594 | 🇺🇸 US | Rear Innerwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 5.7L 350cid V8 | 02820 | 🇺🇸 US | Race | View on Amazon |
| NATIONAL Popular Fits: 5.7L 350cid V8 | 02872 | 🇺🇸 US | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| NATIONAL Popular Fits: 5.7L 350cid V8 | 31594 | 🇺🇸 US | Rear Innerwith 8.5 IN Ring Gear | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NB02820 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NB31520 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NB02872 | 🇺🇸 US | Rear Outerwith Spicer 44 Axle(S) | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NB31594 | 🇺🇸 US | Rear Innerwith Spicer 44 Axle(S) | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | HM88510 | 🇺🇸 US | Race | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | HM803110 | 🇺🇸 US | Race | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | HM803146 | 🇺🇸 US | Rear Inner | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Fits: 4.1L 250cid L6 | HM803146 | 🇺🇸 US | Rear Inner | View on Amazon |
| SKF Fits: 4.1L 250cid L6 | HM88542 | 🇺🇸 US | Rear Outer | View on Amazon |
This table covers the bearings and races on the differential pinion.
16 Differential Pinion Bearing / Race parts for the 1973 Checker Aerobus come from 4 brands — SKF, WJB / INMOTION PARTS, BCA and 1 other brand. The "Popular" part is NATIONAL 02820.
The Economy section: 4 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS WT02820 is listed in this group.
Standard Replacement: 10 parts, from BCA, NATIONAL and SKF. A representative part number is NATIONAL 02820.
2 further parts sit outside the graded sections, with the same engine-level match.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: 5.7L 350cid V8 | 99193 | 🇺🇸 US | with 3-Speed Borg Warner T12 Transmission | View on Amazon |
| SCHAEFFLER Fits: 5.7L 350cid V8 | SR3481 | 🇺🇸 US | Rear14.3 mm Width | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS99155 | 🇺🇸 US | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
3 Differential Pinion Repair Sleeve parts are listed for the 1973 Checker Aerobus, from NATIONAL, SCHAEFFLER and WJB / INMOTION PARTS.
This group includes NATIONAL 99193, SCHAEFFLER SR3481 and WJB / INMOTION PARTS WS99155.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Popular Fits: 5.7L 350cid V8 | 15788 | 🇺🇸 US | Rear | View on Amazon |
| BCA Fits: 5.7L 350cid V8 | NS5778V | 🇺🇸 US | Viton | View on Amazon |
| SCHAEFFLER Fits: 5.7L 350cid V8 | SS2633 | 🇺🇸 US | Rear16.891 mm Width | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS5778 | 🇺🇸 US | Nitrile | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WS5778V | 🇺🇸 US | Rear OuterViton Type | 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.
5 Differential Pinion Seal parts are listed for the 1973 Checker Aerobus, from WJB / INMOTION PARTS, SKF, BCA and 1 other brand. SKF 15788 carries the "Popular" badge.
This group includes SKF 15788, BCA NS5778V and SCHAEFFLER SS2633 and the remaining parts above.
Differential Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | WKRA28 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
This table covers kits that group the bearings, races and seals for a differential rebuild.
This group shows a single part: WJB / INMOTION PARTS WKRA28.
Drive Shaft Center Support Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: 5.7L 350cid V8 | WCHB88107A | 🇺🇸 US | Includes Bearing and Support | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR Popular Fits: 5.7L 350cid V8 | 6056 | 🇺🇸 US | Centerwith 35mm Inside Diameter Bearing(s) | View on Amazon |
| ACDELCO Fits: 5.7L 350cid V8 | HB88107A | 🇺🇸 US 🇨🇦 CA | GoldAssembly | View on Amazon |
| ANCHOR Fits: 5.7L 350cid V8 | 6027 | 🇺🇸 US | CenterCushion Only | View on Amazon |
| DANA Fits: 5.7L 350cid V8 | 25141750X | 🇺🇸 US | Spicer SelectContains Rubber Piece only | View on Amazon |
| NATIONAL Fits: 5.7L 350cid V8 | HB88107A | 🇺🇸 US | Includes Bearing and Support | View on Amazon |
| SCHAEFFLER Fits: 5.7L 350cid V8 | 102399 | 🇺🇸 US | 25 mm Width72 mm Outside Diameter | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | HB88107A | 🇺🇸 US | View on Amazon | |
| SKF Fits: 5.7L 350cid V8 | BR88107 | 🇺🇸 US | Bearing Only | 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.
9 Drive Shaft Center Support Bearing parts for the 1973 Checker Aerobus come from 7 brands — ANCHOR, SKF, WJB / INMOTION PARTS and 4 other brands. The "Popular" part is WJB / INMOTION PARTS WCHB88107A.
The Economy section: 1 option from WJB / INMOTION PARTS. WJB / INMOTION PARTS WCHB88107A is listed in this group.
Standard Replacement: 8 parts, from ANCHOR, SKF, ACDELCO and 3 other brands. A representative part number is ANCHOR 6056.
Part numbers include WJB / INMOTION PARTS WCHB88107A, ANCHOR 6056 and ACDELCO HB88107A, among others listed above.
Universal Joint
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Fits: 5.7L 350cid V8 | 15153X | 🇺🇸 US | SVLGreasable | View on Amazon |
| DANA Fits: 5.7L 350cid V8 | 25153X | 🇺🇸 US | Spicer SelectGreasable | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | UJT269 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Non-Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | UJT369 | 🇺🇸 US 🇨🇦 CA | Grade Type: STD-Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | UJT280 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Bearing Greaseable | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Popular Fits: 5.7L 350cid V8 | 51310X | 🇺🇸 US | Spicer Life Series (SPL)Non-Greasable | View on Amazon |
| MOOG Popular Fits: 5.7L 350cid V8 | 269 | 🇺🇸 US | Super StrengthNon-Greasable | View on Amazon |
| MOOG Popular Fits: 5.7L 350cid V8 | 280 | 🇺🇸 US | Super StrengthGreasable | View on Amazon |
| DANA Fits: 5.7L 350cid V8 | 513101X | 🇺🇸 US | Spicer Life Series (SPL)Greasable | View on Amazon |
| GMB Fits: 5.7L 350cid V8 | 2150153 | 🇺🇸 US | PerformanceGreasable | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | UJ269 | 🇺🇸 US | Greaseable or Brute Force Non Greaseable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Popular Fits: 5.7L 350cid V8 | 369 | 🇺🇸 US | Greasable | View on Amazon |
| DANA Fits: 5.7L 350cid V8 | 5153X | 🇺🇸 US | SpicerGreasable | View on Amazon |
| GMB Fits: 5.7L 350cid V8 | 2100153 | 🇺🇸 US | GreasableGrease Fitting in Cross | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | UJ369 | 🇺🇸 US | Greaseable | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | UJ369C | 🇺🇸 US | Greaseable | View on Amazon |
| SKF Fits: 5.7L 350cid V8 | UJ280 | 🇺🇸 US | Greaseable | View on Amazon |
This table covers the U-joints in the driveshaft.
17 Universal Joint parts are listed for the 1973 Checker Aerobus, from DANA, SKF, WJB / INMOTION PARTS and 2 other brands. DANA 51310X carries the "Popular" badge.
Economy: 5 parts, from WJB / INMOTION PARTS and DANA. A representative part number is DANA 15153X.
The Heavy Duty section lists 6 options from DANA, MOOG, GMB and 1 other brand — rated for severe service. DANA 51310X is listed in this group.
The Standard Replacement section: 6 options from SKF, MOOG, DANA and 1 other brand. MOOG 369 is listed in this group.
Universal Joint Ball Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Fits: 5.7L 350cid V8 | 10018465 | 🇺🇸 US | SpicerGreasable | View on Amazon |
This table covers the Universal Joint Ball kits.
This group shows a single part: DANA 10018465.
Universal Joint Strap Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | UJT43710 | 🇺🇸 US 🇨🇦 CA | Rear Shaft All Joints1/4-28 Bolts | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.7L 350cid V8 | UJT36010 | 🇺🇸 US 🇨🇦 CA | Rear Shaft All Joints5/16-24 Bolts | View on Amazon |
This table covers the Universal Joint Strap kits.
WJB / INMOTION PARTS supplies both parts for the 1973 Checker Aerobus.
This group includes WJB / INMOTION PARTS UJT43710 and WJB / INMOTION PARTS UJT36010.
Universal Joint U-Bolt Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTIVE GEAR Fits: 5.7L 350cid V8 | MGUB1310 | 🇺🇸 US | Competition Yoke U-BoltIncl. Longer Chromoly U-Bolts/Grade 8 Bolts | View on Amazon |
| MOTIVE GEAR Fits: 5.7L 350cid V8 | MGUB1310XL | 🇺🇸 US | 1310 U-Bolt KitExtra Long Bolt | View on Amazon |
This table covers the Universal Joint U-Bolt kits.
2 Universal Joint U-Bolt Kit parts for the 1973 Checker Aerobus come from MOTIVE GEAR.
Part numbers include MOTIVE GEAR MGUB1310 and MOTIVE GEAR MGUB1310XL.
Universal Joint Yoke
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Fits: 5.7L 350cid V8 | 211544X | 🇺🇸 US | FSGRDouble Cardan CV Centering Yoke | View on Amazon |
| DANA Fits: 5.7L 350cid V8 | 211355X | 🇺🇸 US | FSGRDouble Cardan CV Centering Yoke | View on Amazon |
This table covers the Universal Joint yokes.
DANA supplies both parts for the 1973 Checker Aerobus.
Part numbers include DANA 211544X and DANA 211355X.
Buying Drivetrain Parts for a 1973 Checker Aerobus
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. Every drivetrain part here is 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: Universal Joint and Differential Pinion Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 1973 Checker Aerobus?
Our catalog currently lists 70 drivetrain parts for the 1973 Checker Aerobus across 13 subcategories and 13 brands, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 1973 Checker Aerobus engines?
Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 1973 Checker Aerobus?
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 1973 Checker Aerobus 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 1973 Checker Aerobus?
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 1973 Checker Aerobus
Drivetrain Parts for Other Checker Aerobus Years
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