The 1978 Morgan Plus 8 has 14 drivetrain parts with verified fitment on this page — 2 part types and 4 brands, covering the 3.5L V8 engine. Each part includes a manufacturer part number and application notes.
On the 1978 Morgan Plus 8, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. All 14 listed parts are Differential Pinion Bearing / Race (9 parts) and Differential Carrier Bearing / Race (5 parts).
Every part on this page is matched to the 3.5L V8 — the only engine offered in the 1978 Morgan Plus 8.
The most listed brands for 1978 Morgan Plus 8 drivetrain parts are WJB / INMOTION PARTS (6 parts), BCA (6 parts) and NATIONAL (1 part), plus 1 more brand. Quality grades include Economy and Standard Replacement.
3 parts on this 1978 Morgan Plus 8 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including WJB / INMOTION PARTS WT14138A (Differential Carrier Bearing / Race) and WJB / INMOTION PARTS WT14276 (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 Popular | WT14138A | 🇺🇸 US | Rearwith Salisbury 7HA Axle | View on Amazon |
| WJB / INMOTION PARTS | WT14283 | 🇺🇸 US | Race | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NB14283 | 🇺🇸 US | Race | View on Amazon |
| BCA | NB14138A | 🇺🇸 US | Rearwith Salisbury 7HA Axle | View on Amazon |
| NATIONAL | 14283 | 🇺🇸 US | Race | View on Amazon |
This table covers the bearings and races that support the differential carrier.
5 Differential Carrier Bearing / Race parts for the 1978 Morgan Plus 8 come from 3 brands — WJB / INMOTION PARTS, BCA and NATIONAL. The "Popular" part is WJB / INMOTION PARTS WT14138A.
The Economy section lists 2 options from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS WT14138A is listed in this group.
In the Standard Replacement grade, BCA and NATIONAL supply 3 parts: built to original-equipment specification. A representative part number is BCA NB14283.
Listed part numbers: WJB / INMOTION PARTS WT14138A, WJB / INMOTION PARTS WT14283 and BCA NB14283, plus the other parts above.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WT14276 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS Popular | WT15245 | 🇺🇸 US | Race | View on Amazon |
| AUTO EXTRA | 14130 | 🇺🇸 US 🇨🇦 CA | RearInner | View on Amazon |
| WJB / INMOTION PARTS | WT14130 | 🇺🇸 US | Rear Innerwith Salisbury 7HA Axle | View on Amazon |
| WJB / INMOTION PARTS | WT15100 | 🇺🇸 US | Rear Outerwith Salisbury 7HA Axle | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NB15245 | 🇺🇸 US | Race Only | View on Amazon |
| BCA | NB14276 | 🇺🇸 US | Race Only | View on Amazon |
| BCA | NB15100 | 🇺🇸 US | Rear Outerwith Salisbury 7HA Axle | View on Amazon |
| BCA | NB14130 | 🇺🇸 US | Rear Innerwith Salisbury 7HA Axle | View on Amazon |
This table covers the bearings and races on the differential pinion.
9 Differential Pinion Bearing / Race parts are listed for the 1978 Morgan Plus 8, from WJB / INMOTION PARTS, BCA and AUTO EXTRA. WJB / INMOTION PARTS WT14276 carries the "Popular" badge.
Economy: 5 parts, from WJB / INMOTION PARTS and AUTO EXTRA. A representative part number is WJB / INMOTION PARTS WT14276.
The Standard Replacement section: 4 options from BCA. BCA NB15245 is listed in this group.
This group includes WJB / INMOTION PARTS WT14276, WJB / INMOTION PARTS WT15245 and AUTO EXTRA 14130 and the remaining parts above.
Buying Drivetrain Parts for a 1978 Morgan Plus 8
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 3.5L 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 Morgan Plus 8?
Our catalog currently lists 14 drivetrain parts for the 1978 Morgan Plus 8 across 2 subcategories and 4 brands, covering the 3.5L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1978 Morgan Plus 8?
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 Morgan Plus 8 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 Morgan Plus 8?
Every part on this page is matched to the 3.5L 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 Morgan Plus 8
Drivetrain Parts for Other Morgan Plus 8 Years
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