The 1949 Hudson Commodore Series has 12 drivetrain parts with verified fitment on this page — 3 part types and 5 brands, covering both the 4.2L 254cid L8 and the 4.3L 262cid L6. Each part includes a manufacturer part number and application notes.
The drivetrain system on the 1949 Hudson Commodore Series moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. All 12 listed parts are Differential Carrier Bearing / Race (7 parts), Differential Pinion Bearing / Race (4 parts) and Drive Shaft Center Support Bearing (1 part).
The 1949 Hudson Commodore Series was sold with both the 4.2L 254cid L8 and the 4.3L 262cid L6. All 12 parts on this page fit every engine.
5 brands supply drivetrain parts for the 1949 Hudson Commodore Series, led by BCA (5 parts), WJB / INMOTION PARTS (3 parts) and NATIONAL (2 parts), plus 2 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1949 Hudson Commodore Series. 2 parts have it, including NATIONAL 25523 (Differential Carrier Bearing / Race) and NATIONAL 25580 (Differential Carrier 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 1949 Commodore Series engines | WT25523 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1949 Commodore Series engines | WT25580 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: all 1949 Commodore Series engines | 25523 | 🇺🇸 US | Race | View on Amazon |
| NATIONAL Popular Fits: all 1949 Commodore Series engines | 25580 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
| ACDELCO Fits: all 1949 Commodore Series engines | 25580 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| BCA Fits: all 1949 Commodore Series engines | NB25523 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: all 1949 Commodore Series engines | NB25580 | 🇺🇸 US | Rearwith Spicer 41 Axle(s) | View on Amazon |
This table covers the bearings and races that support the differential carrier.
7 Differential Carrier Bearing / Race parts are listed for the 1949 Hudson Commodore Series, from WJB / INMOTION PARTS, NATIONAL, BCA and 1 other brand. NATIONAL 25523 carries the "Popular" badge. All of them fit every engine offered in the 1949 Commodore Series.
In the Economy grade, WJB / INMOTION PARTS supplies 2 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WT25523.
The Standard Replacement section lists 5 options from NATIONAL, BCA and ACDELCO — built to original-equipment specification. NATIONAL 25523 is listed in this group.
Listed part numbers: NATIONAL 25523, WJB / INMOTION PARTS WT25523 and WJB / INMOTION PARTS WT25580, plus the other parts above.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1949 Commodore Series engines | WT31520 | 🇺🇸 US | Race | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 1949 Commodore Series engines | NB31520 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: all 1949 Commodore Series engines | NB3820 | 🇺🇸 US | Race | View on Amazon |
| BCA Fits: all 1949 Commodore Series engines | NB3877 | 🇺🇸 US | Rear Innerwith Spicer 41 Axle(s) | View on Amazon |
This table covers the bearings and races on the differential pinion.
4 Differential Pinion Bearing / Race parts for the 1949 Hudson Commodore Series come from 2 brands — BCA and WJB / INMOTION PARTS. Every part fits both the 4.2L 254cid L8 and the 4.3L 262cid L6.
The Economy section: 1 option from WJB / INMOTION PARTS. WJB / INMOTION PARTS WT31520 is listed in this group.
Standard Replacement: 3 parts, from BCA. A representative part number is BCA NB31520.
This group includes WJB / INMOTION PARTS WT31520, BCA NB31520 and BCA NB3820 and the remaining parts above.
Drive Shaft Center Support Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRO Fits: all 1949 Commodore Series engines | 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.
This group shows a single part: METRO RP250.
Buying Drivetrain Parts for a 1949 Hudson Commodore Series
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 4.2L 254cid L8 and the 4.3L 262cid L6.
- 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 Carrier Bearing / Race and Differential Pinion Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 1949 Hudson Commodore Series?
Our catalog currently lists 12 drivetrain parts for the 1949 Hudson Commodore Series across 3 subcategories and 5 brands, covering both the 4.2L 254cid L8 and the 4.3L 262cid L6. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 1949 Hudson Commodore Series engines?
No. On this page every drivetrain part fits both the 4.2L 254cid L8 and the 4.3L 262cid L6. 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 1949 Hudson Commodore Series?
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 1949 Hudson Commodore Series 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 1949 Hudson Commodore Series?
Every part on this page already fits both the 4.2L 254cid L8 and the 4.3L 262cid L6. 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 1949 Hudson Commodore Series
Drivetrain Parts for Other Hudson Commodore Series Years
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