This page lists 27 drivetrain parts for the 1961 Triumph TR3A, across 5 part types, covering both the 2.0L L4 and the 2.1L L4. Every part shows its brand, manufacturer part number and fitment notes.
On the 1961 Triumph TR3A, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. 22 parts of the 27 listed are Differential Pinion Bearing / Race (12 parts), Differential Carrier Bearing / Race (5 parts) and Universal Joint (5 parts). The other 2 part types cover the remaining 5 parts.
The 1961 Triumph TR3A was sold with both the 2.0L L4 and the 2.1L L4. All 27 parts on this page fit every engine.
10 brands supply drivetrain parts for the 1961 Triumph TR3A, led by TIMKEN (7 parts), BCA (5 parts) and WJB / INMOTION PARTS (4 parts), plus 7 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1961 Triumph TR3A. 5 parts have it, including TIMKEN 16150 (Differential Carrier Bearing / Race) and WJB / INMOTION PARTS WT15245 (Differential Pinion Bearing / Race). Each part number opens a page with every vehicle that part fits.
Differential Carrier Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular Fits: all 1961 TR3A engines | 16150 | 🇺🇸 US | Rear | View on Amazon |
| BCA Fits: all 1961 TR3A engines | NB16283 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: all 1961 TR3A engines | NB16150 | 🇺🇸 US | Rearwith Standard TS Axle(s) | View on Amazon |
| NATIONAL Fits: all 1961 TR3A engines | 16283 | 🇺🇸 US | Race | View on Amazon |
| TIMKEN Fits: all 1961 TR3A engines | 16283 | 🇺🇸 US | Race | View on Amazon |
This table covers the bearings and races that support the differential carrier.
5 Differential Carrier Bearing / Race parts are listed for the 1961 Triumph TR3A, from TIMKEN, BCA and NATIONAL. TIMKEN 16150 carries the "Popular" badge. All of them fit every engine offered in the 1961 TR3A.
Listed part numbers: TIMKEN 16150, BCA NB16283 and BCA NB16150, plus the other parts above.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: all 1961 TR3A engines | WT15245 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1961 TR3A engines | WT15100 | 🇺🇸 US | Rear Outerwith Standard TS Axle | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: all 1961 TR3A engines | AC15245 | 🇺🇸 US 🇨🇦 CA | GoldRace Only | View on Amazon |
| TIMKEN Popular Fits: all 1961 TR3A engines | 15245 | 🇺🇸 US | Race Only | View on Amazon |
| BCA Fits: all 1961 TR3A engines | NB15245 | 🇺🇸 US | Race Only | View on Amazon |
| BCA Fits: all 1961 TR3A engines | NB15100 | 🇺🇸 US | Rear Outerwith Standard TS Axle(s) | View on Amazon |
| BCA Fits: all 1961 TR3A engines | NB3120 | 🇺🇸 US | Race | View on Amazon |
| SCHAEFFLER Fits: all 1961 TR3A engines | K3188 | 🇺🇸 US | Rear Inner | View on Amazon |
| SCHAEFFLER Fits: all 1961 TR3A engines | K15100 | 🇺🇸 US | Rear Outer20.638 mm Width | View on Amazon |
| TIMKEN Fits: all 1961 TR3A engines | 15100 | 🇺🇸 US | Rear Outer | View on Amazon |
| TIMKEN Fits: all 1961 TR3A engines | 3120 | 🇺🇸 US | Race Only | View on Amazon |
| TIMKEN Fits: all 1961 TR3A engines | 3188 | 🇺🇸 US | Rear Inner | View on Amazon |
This table covers the bearings and races on the differential pinion.
12 Differential Pinion Bearing / Race parts for the 1961 Triumph TR3A come from 5 brands — TIMKEN, BCA, WJB / INMOTION PARTS and 2 other brands. The "Popular" part is WJB / INMOTION PARTS WT15245. Every part fits both the 2.0L L4 and the 2.1L L4.
The Economy section lists 2 options from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS WT15245 is listed in this group.
In the Standard Replacement grade, TIMKEN, BCA, SCHAEFFLER and 1 other brand supply 10 parts: built to original-equipment specification. A representative part number is ACDELCO AC15245.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: all 1961 TR3A engines | SR3477 | 🇺🇸 US | Rearwith 1.500 In Shaft | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1961 TR3A engines | WS99149 | 🇺🇸 US | Rear Outerwith Standard TS Axle | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
2 Differential Pinion Repair Sleeve parts are listed for the 1961 Triumph TR3A, from SCHAEFFLER and WJB / INMOTION PARTS. All of them fit every engine offered in the 1961 TR3A.
Part numbers include SCHAEFFLER SR3477 and WJB / INMOTION PARTS WS99149.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: all 1961 TR3A engines | SS2582 | 🇺🇸 US | Rear2.69" O.D. X 0.5" Width | View on Amazon |
| TIMKEN Fits: all 1961 TR3A engines | 470487N | 🇺🇸 US | Rear | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1961 TR3A engines | WS470487N | 🇺🇸 US | Rear Outerwith Standard TS Axle | 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.
3 Differential Pinion Seal parts are listed for the 1961 Triumph TR3A, from SCHAEFFLER, TIMKEN and WJB / INMOTION PARTS. All of them fit every engine offered in the 1961 TR3A.
This group includes SCHAEFFLER SS2582, TIMKEN 470487N and WJB / INMOTION PARTS WS470487N.
Universal Joint
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DANA Fits: all 1961 TR3A engines | 253214X | 🇺🇸 US | Spicer SelectGreasable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Popular Fits: all 1961 TR3A engines | 344 | 🇺🇸 US | Fits Rear Driveshaft at Rear Axle | View on Amazon |
| DANA Fits: all 1961 TR3A engines | 53214X | 🇺🇸 US | SpicerGreasable | View on Amazon |
| FVP Fits: all 1961 TR3A engines | 2201100 | 🇺🇸 US | GreasableGrease Fitting in Cross | View on Amazon |
| GMB Fits: all 1961 TR3A engines | 2201100 | 🇺🇸 US | GreasableGrease Fitting in Cross | View on Amazon |
This table covers the U-joints in the driveshaft.
5 Universal Joint parts are listed for the 1961 Triumph TR3A, from DANA, MOOG, FVP and 1 other brand. MOOG 344 carries the "Popular" badge. All of them fit every engine offered in the 1961 TR3A.
Economy: 1 part, from DANA. A representative part number is DANA 253214X.
The Standard Replacement section: 4 options from MOOG, DANA, FVP and 1 other brand. MOOG 344 is listed in this group.
Listed part numbers: MOOG 344, DANA 253214X and DANA 53214X, plus the other parts above.
Buying Drivetrain Parts for a 1961 Triumph TR3A
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 2.0L 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 1961 Triumph TR3A?
Our catalog currently lists 27 drivetrain parts for the 1961 Triumph TR3A across 5 subcategories and 10 brands, covering both the 2.0L L4 and the 2.1L L4. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 1961 Triumph TR3A engines?
No. On this page every drivetrain part fits both the 2.0L 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 1961 Triumph TR3A?
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 1961 Triumph TR3A 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 1961 Triumph TR3A?
Every part on this page already fits both the 2.0L 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 1961 Triumph TR3A
Drivetrain Parts for Other Triumph TR3A Years
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