This page lists 36 drivetrain parts for the 1951 Hudson Pacemaker, across 6 part types, covering the 3.8L 232cid L6 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1951 Hudson Pacemaker, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Most of the listed parts are Differential Pinion Bearing / Race (13 parts), Differential Carrier Bearing / Race (10 parts) and Differential Pinion Seal (5 parts). The other 3 part types cover the remaining 8 parts.
The 1951 Hudson Pacemaker came with a single engine, the 3.8L 232cid L6, and every part is verified against it.
8 brands supply drivetrain parts for the 1951 Hudson Pacemaker, led by BCA (12 parts), WJB / INMOTION PARTS (11 parts) and NATIONAL (7 parts), plus 5 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1951 Hudson Pacemaker. 6 parts have it, including NATIONAL 25523 (Differential Carrier Bearing / Race) and NATIONAL 02820 (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 | WT25523 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS | WT25580 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WT25577 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular | 25523 | 🇺🇸 US | Race | View on Amazon |
| NATIONAL Popular | 25580 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
| ACDELCO | 25580 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| BCA | NB25523 | 🇺🇸 US | Race | View on Amazon |
| BCA | NB25580 | 🇺🇸 US | Rearwith Spicer 41 Axle(s) | View on Amazon |
| BCA | NB25577 | 🇺🇸 US | Rearwith Spicer 44 Axle(S) | View on Amazon |
| NATIONAL | 25577 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | 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 1951 Hudson Pacemaker, from WJB / INMOTION PARTS, NATIONAL, BCA and 1 other brand. NATIONAL 25523 carries the "Popular" badge.
In the Economy grade, WJB / INMOTION PARTS supplies 3 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WT25523.
The Standard Replacement section lists 7 options from NATIONAL, BCA and ACDELCO — built to original-equipment specification. NATIONAL 25523 is listed in this group.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | RDS6629 | 🇺🇸 US | Rearwith Spicer 44 Axle(S) | View on Amazon |
| VICTOR REINZ | 711481100 | 🇺🇸 US | 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 1951 Hudson Pacemaker, from FEL-PRO and VICTOR REINZ.
Part numbers include FEL-PRO RDS6629 and VICTOR REINZ 711481100.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WT02820 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS | WT31520 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS | WT02872 | 🇺🇸 US | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WT31594 | 🇺🇸 US | Rear Innerwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular | 02820 | 🇺🇸 US | Race | View on Amazon |
| NATIONAL Popular | 02872 | 🇺🇸 US | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| NATIONAL Popular | 31594 | 🇺🇸 US | Rear Innerwith 8.5 IN Ring Gear | View on Amazon |
| BCA | NB02820 | 🇺🇸 US | Race | View on Amazon |
| BCA | NB31520 | 🇺🇸 US | Race | View on Amazon |
| BCA | NB3820 | 🇺🇸 US | Race | View on Amazon |
| BCA | NB02872 | 🇺🇸 US | Rear Outerwith Spicer 44 Axle(S) | View on Amazon |
| BCA | NB31594 | 🇺🇸 US | Rear Innerwith Spicer 44 Axle(S) | View on Amazon |
| BCA | NB3877 | 🇺🇸 US | Rear Innerwith Spicer 41 Axle(s) | View on Amazon |
This table covers the bearings and races on the differential pinion.
13 Differential Pinion Bearing / Race parts for the 1951 Hudson Pacemaker come from 3 brands — BCA, WJB / INMOTION PARTS and NATIONAL. The "Popular" part is NATIONAL 02820.
The Economy section: 4 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS WT02820 is listed in this group.
Standard Replacement: 9 parts, from BCA and NATIONAL. A representative part number is NATIONAL 02820.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SR3481 | 🇺🇸 US | Rear14.3 mm Width | View on Amazon |
| WJB / INMOTION PARTS | WS99155 | 🇺🇸 US | Rear Outerwith 8.5 IN Ring Gear | 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 1951 Hudson Pacemaker, from SCHAEFFLER and WJB / INMOTION PARTS.
Listed part numbers: SCHAEFFLER SR3481 and WJB / INMOTION PARTS WS99155.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WS5778 | 🇺🇸 US | Nitrile | View on Amazon |
| BCA | NS5778 | 🇺🇸 US | Nitrile | View on Amazon |
| BCA | NS5778V | 🇺🇸 US | Viton | View on Amazon |
| SCHAEFFLER | SS2633 | 🇺🇸 US | Rear16.891 mm Width | View on Amazon |
| WJB / INMOTION PARTS | WS5778V | 🇺🇸 US | Rear OuterViton Type | 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.
5 Differential Pinion Seal parts are listed for the 1951 Hudson Pacemaker, from WJB / INMOTION PARTS, BCA and SCHAEFFLER. WJB / INMOTION PARTS WS5778 carries the "Popular" badge.
Listed part numbers: WJB / INMOTION PARTS WS5778, BCA NS5778 and BCA NS5778V, plus the other parts above.
Drive Shaft Center Support Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | RB88107BVV | 🇺🇸 US | Slip Yoke Style | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NB88107BVV | 🇺🇸 US | Bearing Only | View on Amazon |
| NATIONAL | 88107BVV | 🇺🇸 US | Slip Yoke Stylewith 35mm Bearing Inside Diameter | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRO | RP250 | 🇺🇸 US 🇨🇦 CA | Sold Individually | 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.
4 Drive Shaft Center Support Bearing parts for the 1951 Hudson Pacemaker come from 4 brands — WJB / INMOTION PARTS, BCA, NATIONAL and 1 other brand.
The Economy section: 1 option from WJB / INMOTION PARTS. WJB / INMOTION PARTS RB88107BVV is listed in this group.
Standard Replacement: 2 parts, from BCA and NATIONAL. A representative part number is BCA NB88107BVV.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include WJB / INMOTION PARTS RB88107BVV, BCA NB88107BVV and NATIONAL 88107BVV, among others listed above.
Buying Drivetrain Parts for a 1951 Hudson Pacemaker
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 3.8L 232cid L6 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 1951 Hudson Pacemaker?
Our catalog currently lists 36 drivetrain parts for the 1951 Hudson Pacemaker across 6 subcategories and 8 brands, covering the 3.8L 232cid L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1951 Hudson Pacemaker?
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 1951 Hudson Pacemaker 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 1951 Hudson Pacemaker?
Every part on this page is matched to the 3.8L 232cid L6 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 1951 Hudson Pacemaker
Drivetrain Parts for Other Hudson Pacemaker Years
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