This page lists 91 drivetrain parts for the 1978 Checker Marathon, across 12 part types, covering all 3 engine options (4.1L 250cid L6, 5.0L 305cid V8 and 5.7L 350cid V8). Every part shows its brand, manufacturer part number and fitment notes.
On the 1978 Checker Marathon, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 65 parts of the 91 listed are Drive Shaft Center Support Bearing (23 parts), Differential Pinion Bearing / Race (21 parts) and Universal Joint (21 parts). The other 9 part types cover the remaining 26 parts.
The 1978 Checker Marathon was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
18 brands supply drivetrain parts for the 1978 Checker Marathon, led by WJB / INMOTION PARTS (18 parts), BCA (11 parts) and DANA (11 parts), plus 15 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 1978 Checker Marathon. 19 parts have it, including TIMKEN 25523 (Differential Carrier Bearing / Race) and NATIONAL 02872 (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: 4.1L 250cid L6, 5.0L 305cid V8 | 51098 | 🇺🇸 US 🇨🇦 CA | 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 1978 Checker Marathon — MOTIVE GEAR 51098.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 4.1L 250cid L6, 5.0L 305cid V8 | WT25523 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: 4.1L 250cid L6, 5.0L 305cid V8 | WT25590 | 🇺🇸 US 🇨🇦 CA | Rearwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular Fits: 4.1L 250cid L6, 5.0L 305cid V8 | 25523 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| TIMKEN Popular Fits: 4.1L 250cid L6, 5.0L 305cid V8 | 25590 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| BCA Fits: 4.1L 250cid L6, 5.0L 305cid V8 | NB25523 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: 4.1L 250cid L6, 5.0L 305cid V8 | NB25590 | 🇺🇸 US 🇨🇦 CA | Rearwith Spicer 44 Axle(S) | View on Amazon |
| NATIONAL Fits: 4.1L 250cid L6, 5.0L 305cid V8 | 25523 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SCHAEFFLER Fits: 4.1L 250cid L6, 5.0L 305cid V8 | 25523 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SCHAEFFLER Fits: 4.1L 250cid L6, 5.0L 305cid V8 | K25590 | 🇺🇸 US 🇨🇦 CA | Rear25.400 mm Width | View on Amazon |
| SKF Fits: 4.1L 250cid L6, 5.0L 305cid V8 | BR25523 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
This table covers the bearings and races that support the differential carrier.
10 Differential Carrier Bearing / Race parts are listed for the 1978 Checker Marathon, from WJB / INMOTION PARTS, TIMKEN, BCA and 3 other brands. TIMKEN 25523 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 WT25523.
The Standard Replacement section lists 8 options from TIMKEN, BCA, SCHAEFFLER and 2 other brands — built to original-equipment specification. TIMKEN 25523 is listed in this group.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 4.1L 250cid L6, 5.0L 305cid V8 | RDS6629 | 🇺🇸 US 🇨🇦 CA | Rearwith Spicer 44 Axle(S) | View on Amazon |
| VICTOR REINZ Fits: 4.1L 250cid L6, 5.0L 305cid V8 | 711481100 | 🇺🇸 US 🇨🇦 CA | 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 1978 Checker Marathon, from FEL-PRO and VICTOR REINZ.
This group includes FEL-PRO RDS6629 and VICTOR REINZ 711481100.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | WT02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | WT31520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | WT02872 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | WT31594 | 🇺🇸 US 🇨🇦 CA | Rear Innerwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: 5.0L 305cid V8 | 02872 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| TIMKEN Popular Fits: 5.0L 305cid V8 | 02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| TIMKEN Popular Fits: 5.0L 305cid V8 | 31520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| TIMKEN Popular Fits: 5.0L 305cid V8 | 02872 | 🇺🇸 US 🇨🇦 CA | Rear Outer | View on Amazon |
| TIMKEN Popular Fits: 5.0L 305cid V8 | 31594 | 🇺🇸 US 🇨🇦 CA | Rear Inner | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NB02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NB31520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NB02872 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith Spicer 44 Axle(S) | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NB31594 | 🇺🇸 US 🇨🇦 CA | Rear Innerwith Spicer 44 Axle(S) | View on Amazon |
| NATIONAL Fits: 5.0L 305cid V8 | 02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| NATIONAL Fits: 5.0L 305cid V8 | 31594 | 🇺🇸 US 🇨🇦 CA | Rear Innerwith 8.5 IN Ring Gear | View on Amazon |
| SCHAEFFLER Fits: 5.0L 305cid V8 | K2872 | 🇺🇸 US 🇨🇦 CA | Rear Outer22.225 mm Width | View on Amazon |
| SCHAEFFLER Fits: 5.0L 305cid V8 | 2820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SCHAEFFLER Fits: 5.0L 305cid V8 | 31520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF Fits: 5.0L 305cid V8 | BR02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF Fits: 5.0L 305cid V8 | BR31520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| SKF Fits: 5.0L 305cid V8 | BR31594 | 🇺🇸 US 🇨🇦 CA | with 1.3750 In. Bearing Inside Diameter | View on Amazon |
This table covers the bearings and races on the differential pinion.
21 Differential Pinion Bearing / Race parts for the 1978 Checker Marathon come from 6 brands — WJB / INMOTION PARTS, TIMKEN, BCA and 3 other brands. The "Popular" part is NATIONAL 02872.
The Economy section: 4 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS WT02820 is listed in this group.
Standard Replacement: 17 parts, from TIMKEN, BCA, NATIONAL and 2 other brands. A representative part number is NATIONAL 02872.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 4.1L 250cid L6, 5.0L 305cid V8 | WS99155 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
One part is listed for the 1978 Checker Marathon — WJB / INMOTION PARTS WS99155.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF Popular Fits: 5.0L 305cid V8 | 15788 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: 5.0L 305cid V8 | WS5778 | 🇺🇸 US 🇨🇦 CA | Nitrile | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NS5778 | 🇺🇸 US 🇨🇦 CA | Nitrile | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NS5778V | 🇺🇸 US 🇨🇦 CA | Viton | View on Amazon |
| SCHAEFFLER Fits: 5.0L 305cid V8 | SS2633 | 🇺🇸 US 🇨🇦 CA | Rear16.891 mm Width | View on Amazon |
| TIMKEN Fits: 5.0L 305cid V8 | 5778 | 🇺🇸 US 🇨🇦 CA | Rear | 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.
6 Differential Pinion Seal parts are listed for the 1978 Checker Marathon, from BCA, SKF, WJB / INMOTION PARTS and 2 other brands. SKF 15788 carries the "Popular" badge.
Listed part numbers: SKF 15788, WJB / INMOTION PARTS WS5778 and BCA NS5778, plus the other parts above.
Differential Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | WKRA28 | 🇺🇸 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.
This group shows a single part: WJB / INMOTION PARTS WKRA28.
Drive Shaft Center Support Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEA / MARMON RIDE CONTROL Popular Fits: 5.0L 305cid V8 | A6056 | 🇺🇸 US 🇨🇦 CA | MRC Driveline | View on Amazon |
| WESTAR Popular Fits: 5.0L 305cid V8 | DS6056 | 🇺🇸 US 🇨🇦 CA | Spicer 1260 thru 1410Bearings I.D. = 1.3780 | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: 5.0L 305cid V8 | WCHB88107A | 🇺🇸 US 🇨🇦 CA | Includes Bearing and Support | View on Amazon |
| DEA / MARMON RIDE CONTROL Fits: 5.0L 305cid V8 | A6027 | 🇺🇸 US 🇨🇦 CA | MRC Driveline | View on Amazon |
| DEA / MARMON RIDE CONTROL Fits: 5.0L 305cid V8 | A60156 | 🇺🇸 US 🇨🇦 CA | MRC Driveline | View on Amazon |
| SKP Fits: 5.0L 305cid V8 | SKDS6027 | 🇺🇸 US 🇨🇦 CA | U-Shaped Housing | View on Amazon |
| SKP Fits: 5.0L 305cid V8 | SKDS6056 | 🇺🇸 US 🇨🇦 CA | Spicer 1260 Thru 1410Bearings I.D. = 1.3780 - 1.3775" | View on Amazon |
| WESTAR Fits: 5.0L 305cid V8 | DS6027 | 🇺🇸 US 🇨🇦 CA | Spicer 1260 Thru 1410Rubber Cushion Only | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | RB88107BVV | 🇺🇸 US 🇨🇦 CA | Slip Yoke Stylewith Spicer 1280,1310,1330,1410 U-Joint(S) | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | WCHB88107B | 🇺🇸 US 🇨🇦 CA | Includes Bearing and Support | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR Popular Fits: 5.0L 305cid V8 | 6056 | 🇺🇸 US 🇨🇦 CA | Centerwith 35mm Inside Diameter Bearing(s) | View on Amazon |
| NATIONAL Popular Fits: 5.0L 305cid V8 | HB88107A | 🇺🇸 US 🇨🇦 CA | Includes Bearing and Support | View on Amazon |
| ACDELCO Fits: 5.0L 305cid V8 | HB88107A | 🇺🇸 US 🇨🇦 CA | GoldAssembly | View on Amazon |
| ANCHOR Fits: 5.0L 305cid V8 | 6027 | 🇺🇸 US 🇨🇦 CA | CenterCushion Only | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NBHB88107A | 🇺🇸 US 🇨🇦 CA | Includes Bearing and SupportSlingers Not Included | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NB88107BVV | 🇺🇸 US 🇨🇦 CA | Bearing Only | View on Amazon |
| BCA Fits: 5.0L 305cid V8 | NBHB88107B | 🇺🇸 US 🇨🇦 CA | Includes Bearing and Support or Bearing OnlyContains Slingers | View on Amazon |
| DANA Fits: 5.0L 305cid V8 | 25141750X | 🇺🇸 US 🇨🇦 CA | Spicer SelectContains Rubber Piece only | View on Amazon |
| NATIONAL Fits: 5.0L 305cid V8 | 88107BVV | 🇺🇸 US 🇨🇦 CA | Slip Yoke Stylewith 35mm Bearing Inside Diameter | View on Amazon |
| PIONEER Fits: 5.0L 305cid V8 | 646027 | 🇺🇸 US 🇨🇦 CA | CenterRubber Cushion Only | View on Amazon |
| PIONEER Fits: 5.0L 305cid V8 | 646056 | 🇺🇸 US 🇨🇦 CA | Centerwith Spicer:1280-1310-1410(Slip Yoke Style) 1.3780 | View on Amazon |
| TIMKEN Fits: 5.0L 305cid V8 | HB88107A | 🇺🇸 US 🇨🇦 CA | Bearing Assembly | View on Amazon |
| TIMKEN Fits: 5.0L 305cid V8 | 88107 | 🇺🇸 US 🇨🇦 CA | 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.
23 Drive Shaft Center Support Bearing parts for the 1978 Checker Marathon come from 11 brands — DEA / MARMON RIDE CONTROL, WJB / INMOTION PARTS, BCA and 8 other brands. The "Popular" part is DEA / MARMON RIDE CONTROL A6056.
The Economy section: 10 options from DEA / MARMON RIDE CONTROL, WJB / INMOTION PARTS, WESTAR and 1 other brand. DEA / MARMON RIDE CONTROL A6056 is listed in this group.
Standard Replacement: 13 parts, from BCA, ANCHOR, NATIONAL and 4 other brands. A representative part number is ANCHOR 6056.
Drive Shaft Center Support Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP Fits: 5.0L 305cid V8 | JB51 | 🇺🇸 US 🇨🇦 CA | Position: Center Support | View on Amazon |
| PIONEER Fits: 5.0L 305cid V8 | 755068 | 🇺🇸 US 🇨🇦 CA | Center Support | View on Amazon |
This table covers the Drive Shaft Center Support 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.
2 Drive Shaft Center Support Bushing parts for the 1978 Checker Marathon come from 2 brands — ATP and PIONEER.
This group includes ATP JB51 and PIONEER 755068.
Transfer Case Low Gear Roller Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER Fits: 5.0L 305cid V8 | 764014 | 🇺🇸 US 🇨🇦 CA | Roller ClutchLow | View on Amazon |
This table covers the Transfer Case Low Gear Roller 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.
This group shows a single part: PIONEER 764014.
Universal Joint
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Popular Fits: 5.0L 305cid V8 | 15153X | 🇺🇸 US 🇨🇦 CA | SVLGreasable | View on Amazon |
| DANA Fits: 5.0L 305cid V8 | 25153X | 🇺🇸 US 🇨🇦 CA | Spicer SelectGreasable | View on Amazon |
| DANA Fits: 5.0L 305cid V8 | 15213X | 🇺🇸 US 🇨🇦 CA | SVLGreasable | View on Amazon |
| DANA Fits: 5.0L 305cid V8 | 25213X | 🇺🇸 US 🇨🇦 CA | Spicer SelectGreasable | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | UJT269 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Non-Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | UJT369 | 🇺🇸 US 🇨🇦 CA | Grade Type: STD-Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | UJT280 | 🇺🇸 US 🇨🇦 CA | Grade Type: Performance-Bearing Greaseable | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | UJT354 | 🇺🇸 US 🇨🇦 CA | Grade Type: STD-Greaseable | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Popular Fits: 5.0L 305cid V8 | 51310X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Non-Greasable | View on Amazon |
| DANA Popular Fits: 5.0L 305cid V8 | 513101X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Greasable | View on Amazon |
| ACDELCO Fits: 5.0L 305cid V8 | 45U0111 | 🇺🇸 US 🇨🇦 CA | Greasable Super StrengthIncludes Flush Type Lube Fitting | View on Amazon |
| DANA Fits: 5.0L 305cid V8 | 51330X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Non-Greasable | View on Amazon |
| DANA Fits: 5.0L 305cid V8 | 513301X | 🇺🇸 US 🇨🇦 CA | Spicer Life Series (SPL)Greasable | View on Amazon |
| GMB Fits: 5.0L 305cid V8 | 2150153 | 🇺🇸 US 🇨🇦 CA | PerformanceGreasable | View on Amazon |
| GMB Fits: 5.0L 305cid V8 | 2151203 | 🇺🇸 US 🇨🇦 CA | PerformanceGreasable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Popular Fits: 5.0L 305cid V8 | 5153X | 🇺🇸 US 🇨🇦 CA | SpicerGreasable | View on Amazon |
| GMB Popular Fits: 5.0L 305cid V8 | 2100213 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Cross | View on Amazon |
| ACDELCO Fits: 5.0L 305cid V8 | 45U0107 | 🇺🇸 US 🇨🇦 CA | GoldGreasable | View on Amazon |
| ACDELCO Fits: 5.0L 305cid V8 | 45U0106 | 🇺🇸 US 🇨🇦 CA | GoldGreasable | View on Amazon |
| DANA Fits: 5.0L 305cid V8 | 5213X | 🇺🇸 US 🇨🇦 CA | SpicerGreasable | View on Amazon |
| GMB Fits: 5.0L 305cid V8 | 2100153 | 🇺🇸 US 🇨🇦 CA | GreasableGrease Fitting in Cross | View on Amazon |
This table covers the U-joints in the driveshaft.
21 Universal Joint parts are listed for the 1978 Checker Marathon, from DANA, WJB / INMOTION PARTS, GMB and 1 other brand. DANA 15153X carries the "Popular" badge.
Economy: 8 parts, from DANA and WJB / INMOTION PARTS. A representative part number is DANA 15153X.
The Heavy Duty section lists 7 options from DANA, GMB and ACDELCO — rated for severe service. DANA 51310X is listed in this group.
The Standard Replacement section: 6 options from DANA, GMB and ACDELCO. DANA 5153X is listed in this group.
Universal Joint Strap Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | UJT43710 | 🇺🇸 US 🇨🇦 CA | Rear Driveshaft At Transmission | View on Amazon |
| WJB / INMOTION PARTS Fits: 5.0L 305cid V8 | UJT36010 | 🇺🇸 US 🇨🇦 CA | Rear Driveshaft At Transmission | View on Amazon |
This table covers the Universal Joint Strap kits.
WJB / INMOTION PARTS supplies both parts for the 1978 Checker Marathon.
Part numbers include WJB / INMOTION PARTS UJT43710 and WJB / INMOTION PARTS UJT36010.
Buying Drivetrain Parts for a 1978 Checker Marathon
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: Drive Shaft Center Support Bearing and Differential Pinion Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 1978 Checker Marathon?
Our catalog currently lists 91 drivetrain parts for the 1978 Checker Marathon across 12 subcategories and 18 brands, covering all 3 engine options (4.1L 250cid L6, 5.0L 305cid V8 and 5.7L 350cid V8). Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 1978 Checker Marathon 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 1978 Checker Marathon?
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 1978 Checker Marathon 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 1978 Checker Marathon?
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 1978 Checker Marathon
Drivetrain Parts for Other Checker Marathon Years
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