This page lists 13 drivetrain parts for the 1966 Morgan Plus 4, across 2 part types, covering both the 1.5L L4 and the 2.1L L4. Every part shows its brand, manufacturer part number and fitment notes.
On the 1966 Morgan Plus 4, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. All 13 listed parts are Differential Pinion Bearing / Race (9 parts) and Differential Carrier Bearing / Race (4 parts).
The 1966 Morgan Plus 4 was sold with both the 1.5L L4 and the 2.1L L4. All 13 parts on this page fit every engine.
3 brands supply drivetrain parts for the 1966 Morgan Plus 4, led by BCA (6 parts), WJB / INMOTION PARTS (5 parts) and NATIONAL (2 parts). Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1966 Morgan Plus 4. 2 parts have it, including NATIONAL 02820 (Differential Pinion Bearing / Race) and NATIONAL 02872 (Differential Pinion Bearing / Race). Each part number opens a page with every vehicle that part fits.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1966 Plus 4 engines | WT24721 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 Plus 4 engines | WT24780 | 🇺🇸 US 🇨🇦 CA | Rearwith Salisbury 3HA Axle | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 1966 Plus 4 engines | NB24721 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 Plus 4 engines | NB24780 | 🇺🇸 US 🇨🇦 CA | Rearwith Salisbury 3HA Axle | View on Amazon |
This table covers the bearings and races that support the differential carrier.
4 Differential Carrier Bearing / Race parts are listed for the 1966 Morgan Plus 4, from WJB / INMOTION PARTS and BCA. All of them fit every engine offered in the 1966 Plus 4.
In the Economy grade, WJB / INMOTION PARTS supplies 2 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WT24721.
The Standard Replacement section lists 2 options from BCA — built to original-equipment specification. BCA NB24721 is listed in this group.
Part numbers include WJB / INMOTION PARTS WT24721, WJB / INMOTION PARTS WT24780 and BCA NB24721, among others listed above.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1966 Plus 4 engines | WT02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 Plus 4 engines | WT31520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 Plus 4 engines | WT02872 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith Salisbury 3HA Axle | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: all 1966 Plus 4 engines | 02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| NATIONAL Popular Fits: all 1966 Plus 4 engines | 02872 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith Salisbury 3HA Axle | View on Amazon |
| BCA Fits: all 1966 Plus 4 engines | NB02820 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 Plus 4 engines | NB31520 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 Plus 4 engines | NB02872 | 🇺🇸 US 🇨🇦 CA | Rear Outerwith Salisbury 3HA Axle(s) | View on Amazon |
| BCA Fits: all 1966 Plus 4 engines | NB31593 | 🇺🇸 US 🇨🇦 CA | Rear Innerwith Salisbury 3HA Axle(s) | View on Amazon |
This table covers the bearings and races on the differential pinion.
9 Differential Pinion Bearing / Race parts for the 1966 Morgan Plus 4 come from 3 brands — BCA, WJB / INMOTION PARTS and NATIONAL. The "Popular" part is NATIONAL 02820. Every part fits both the 1.5L L4 and the 2.1L L4.
The Economy section: 3 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS WT02820 is listed in this group.
Standard Replacement: 6 parts, from BCA and NATIONAL. A representative part number is NATIONAL 02820.
Listed part numbers: NATIONAL 02820, WJB / INMOTION PARTS WT02820 and WJB / INMOTION PARTS WT31520, plus the other parts above.
Buying Drivetrain Parts for a 1966 Morgan Plus 4
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- You do not need to pick an engine: every drivetrain part on this page fits both the 1.5L L4 and the 2.1L L4.
- 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 1966 Morgan Plus 4?
Our catalog currently lists 13 drivetrain parts for the 1966 Morgan Plus 4 across 2 subcategories and 3 brands, covering both the 1.5L L4 and the 2.1L L4. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 1966 Morgan Plus 4 engines?
No. On this page every drivetrain part fits both the 1.5L L4 and the 2.1L L4. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of drivetrain problems on a 1966 Morgan Plus 4?
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 1966 Morgan Plus 4 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 1966 Morgan Plus 4?
Every part on this page already fits both the 1.5L L4 and the 2.1L L4. 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 1966 Morgan Plus 4
Drivetrain Parts for Other Morgan Plus 4 Years
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