The 1978 Bentley Corniche has 28 drivetrain parts with verified fitment on this page — 4 part types and 6 brands, covering the 6.8L V8 engine. Each part includes a manufacturer part number and application notes.
The drivetrain system on the 1978 Bentley Corniche moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Differential Pinion Bearing / Race (13 parts), Differential Carrier Bearing / Race (12 parts) and Drive Shaft Center Support Bushing (2 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 6.8L V8 — the only engine offered in the 1978 Bentley Corniche.
The most listed brands for 1978 Bentley Corniche drivetrain parts are WJB / INMOTION PARTS (8 parts), TIMKEN (8 parts) and BCA (8 parts), plus 3 more brands. Quality grades include Standard Replacement and Economy.
6 parts on this 1978 Bentley Corniche page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TIMKEN 25520 (Differential Carrier Bearing / Race) and TIMKEN HM88610 (Differential Pinion Bearing / Race). Click any part number to see every vehicle that part fits.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WT362A | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WT29590 | 🇺🇸 US 🇨🇦 CA | Rear Leftwith Rolls-Royce Axle | View on Amazon |
| WJB / INMOTION PARTS | WT29520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WT368A | 🇺🇸 US 🇨🇦 CA | Rear Rightwith Rolls-Royce Axle | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular | 25520 | 🇺🇸 US 🇨🇦 CA | RaceRace Bearing | View on Amazon |
| TIMKEN Popular | 362A | 🇺🇸 US 🇨🇦 CA | Race Only | View on Amazon |
| TIMKEN Popular | 25590 | 🇺🇸 US 🇨🇦 CA | Rear Left | View on Amazon |
| BCA | NB362A | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA | NB29520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA | NB368A | 🇺🇸 US 🇨🇦 CA | Repair Bearing | View on Amazon |
| BCA | NB29590 | 🇺🇸 US 🇨🇦 CA | Rear Leftwith Rolls-Royce Axle(s) | View on Amazon |
| TIMKEN | 368A | 🇺🇸 US 🇨🇦 CA | Rear Right | View on Amazon |
This table covers the bearings and races that support the differential carrier.
12 Differential Carrier Bearing / Race parts for the 1978 Bentley Corniche come from 3 brands — WJB / INMOTION PARTS, TIMKEN and BCA. The "Popular" part is TIMKEN 25520.
The Economy section lists 4 options from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS WT362A is listed in this group.
In the Standard Replacement grade, TIMKEN and BCA supply 8 parts: built to original-equipment specification. A representative part number is TIMKEN 25520.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND | SHM88610 | 🇺🇸 US 🇨🇦 CA | RearOuter | View on Amazon |
| WJB / INMOTION PARTS | WTHM88610 | 🇺🇸 US 🇨🇦 CA | Cup Outside Diameter (In): 2.8439999999999999 InRace | View on Amazon |
| WJB / INMOTION PARTS | WTHM903210 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTHM88649 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith Rolls-Royce Axle | View on Amazon |
| WJB / INMOTION PARTS | WTHM903249 | 🇺🇸 US 🇨🇦 CA | Rear Innerwith Rolls-Royce Axle | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular | HM88610 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| TIMKEN Popular | HM88649 | 🇺🇸 US 🇨🇦 CA | Cone | View on Amazon |
| TIMKEN Popular | HM903249 | 🇺🇸 US 🇨🇦 CA | Rear Inner | View on Amazon |
| BCA | NBHM88610 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA | NBHM88649 | 🇺🇸 US 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBHM903210 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA | NBHM903249 | 🇺🇸 US 🇨🇦 CA | Rear Innerwith Rolls-Royce Axle(s) | View on Amazon |
| TIMKEN | HM903210 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
This table covers the bearings and races on the differential pinion.
13 Differential Pinion Bearing / Race parts are listed for the 1978 Bentley Corniche, from WJB / INMOTION PARTS, TIMKEN, BCA and 1 other brand. TIMKEN HM88610 carries the "Popular" badge.
Economy: 5 parts, from WJB / INMOTION PARTS and FAMOUS BRAND. A representative part number is FAMOUS BRAND SHM88610.
The Standard Replacement section: 8 options from TIMKEN and BCA. TIMKEN HM88610 is listed in this group.
Drive Shaft Center Support Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP | JB51 | 🇺🇸 US 🇨🇦 CA | Position: Center Support | View on Amazon |
| PIONEER | 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 are listed for the 1978 Bentley Corniche, from ATP and PIONEER.
This group includes ATP JB51 and PIONEER 755068.
Transfer Case Low Gear Roller Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER | 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.
One part is listed for the 1978 Bentley Corniche — PIONEER 764014.
Buying Drivetrain Parts for a 1978 Bentley Corniche
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 6.8L 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 Carrier Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 1978 Bentley Corniche?
Our catalog currently lists 28 drivetrain parts for the 1978 Bentley Corniche across 4 subcategories and 6 brands, covering the 6.8L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1978 Bentley Corniche?
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 Bentley Corniche 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 Bentley Corniche?
Every part on this page is matched to the 6.8L 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 1978 Bentley Corniche
Drivetrain Parts for Other Bentley Corniche Years
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