The 1991 Buick Century has 19 drivetrain parts with verified fitment on this page — 5 part types and 10 brands, covering both the 3.1L V6 and the 3.3L V6. Each part includes a manufacturer part number and application notes.
On the 1991 Buick Century, 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 CV Axle (10 parts), Differential Pinion Bearing / Race (3 parts) and Transfer Case Low Gear Roller Bearing (3 parts). The other 2 part types cover the remaining 3 parts.
The 1991 Buick Century was sold with both the 3.1L V6 and the 3.3L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
10 brands supply drivetrain parts for the 1991 Buick Century, led by CARDONE (4 parts), PIONEER (4 parts) and SCHAEFFLER (3 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 1991 Buick Century. 2 parts have it, including HERI 70281 (CV Axle) and TRAKMOTIVE GM8092 (CV Axle). Each part number opens a page with every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.1L V6 | 24202835 | 🇺🇸 US 🇨🇦 CA | FrontIn Case | View on Amazon |
This table covers the seals where an axle shaft exits the housing. 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.
One part is listed for the 1991 Buick Century — GM GENUINE 24202835.
CV Axle
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HERI Popular Fits: 3.1L V6 | 70281 | 🇲🇽 MX | Front Left | View on Amazon |
| CARDONE Fits: 3.1L V6 | 601010 | 🇲🇽 MX | Remanufactured | View on Amazon |
| CARDONE Fits: 3.1L V6 | 601004 | 🇲🇽 MX | Remanufactured | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TRAKMOTIVE Popular Fits: 3.1L V6 | GM8092 | 🇲🇽 MX | Front Right27 Spline O.B. Joint | View on Amazon |
| APWI Fits: 3.1L V6 | GM8009 | 🇲🇽 MX | Front Left | View on Amazon |
| CARDONE Fits: 3.1L V6 | 661094 | 🇲🇽 MX | Front Right | View on Amazon |
| CARDONE Fits: 3.1L V6 | 661004 | 🇲🇽 MX | Front Left | View on Amazon |
| GSP Fits: 3.1L V6 | NCV10027 | 🇲🇽 MX | Front Leftwith 27 Spline Outboard Joint & Hub | View on Amazon |
| TOP NOTCH Fits: 3.1L V6 | TN20007 | 🇲🇽 MX | Front Leftwith 27 Spline Outboard Joint & Hub | View on Amazon |
| TRAKMOTIVE Fits: 3.1L V6 | GM8076 | 🇲🇽 MX | Does Not Include ABS Ring | View on Amazon |
This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes.
10 CV Axle parts are listed for the 1991 Buick Century, from CARDONE, TRAKMOTIVE, HERI and 3 other brands. HERI 70281 carries the "Popular" badge.
In the Economy grade, CARDONE and HERI supply 3 parts: the catalog's value-priced group. A representative part number is HERI 70281.
The Standard Replacement section lists 7 options from TRAKMOTIVE, CARDONE, APWI and 2 other brands — built to original-equipment specification. TRAKMOTIVE GM8092 is listed in this group.
Differential Pinion Bearing / Race
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: 3.1L V6 | M88010 | 🇲🇽 MX | Race | View on Amazon |
| SCHAEFFLER Fits: 3.1L V6 | KM802048 | 🇲🇽 MX | Rear | View on Amazon |
| SCHAEFFLER Fits: 3.1L V6 | KM88048 | 🇲🇽 MX | Rear Outer1.313 In Inside Diameter X 2.688 In Outside Diameter X 0.875 In Thick | View on Amazon |
This table covers the bearings and races on the differential pinion.
3 Differential Pinion Bearing / Race parts for the 1991 Buick Century come from SCHAEFFLER.
This group includes SCHAEFFLER M88010, SCHAEFFLER KM802048 and SCHAEFFLER KM88048.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ATP Fits: 3.1L V6 | NO87 | 🇲🇽 MX | Fits Right | View on Amazon |
| PIONEER Fits: 3.1L V6 | 759028 | 🇲🇽 MX | Fits Right | View on Amazon |
This table covers the seals at the Differential. 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.
2 Differential Seal parts for the 1991 Buick Century come from 2 brands — ATP and PIONEER.
Part numbers include ATP NO87 and PIONEER 759028.
Transfer Case Low Gear Roller Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER Fits: 3.1L V6 | 764016 | 🇲🇽 MX | Roller clutchlow | View on Amazon |
| PIONEER Fits: 3.1L V6 | 764012 | 🇲🇽 MX | Roller Clutch3rd clutch | View on Amazon |
| PIONEER Fits: 3.1L V6 | 764024 | 🇲🇽 MX | Roller ClutchForward | View on Amazon |
This table covers the Transfer Case Low Gear Roller 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.
3 Transfer Case Low Gear Roller Bearing parts for the 1991 Buick Century come from PIONEER.
Listed part numbers: PIONEER 764016, PIONEER 764012 and PIONEER 764024.
Buying Drivetrain Parts for a 1991 Buick Century
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Match the engine first. Every drivetrain part here is engine-specific; each row shows which engine(s) it fits.
- 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: CV Axle and Differential Pinion Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 1991 Buick Century?
Our catalog currently lists 19 drivetrain parts for the 1991 Buick Century across 5 subcategories and 10 brands, covering both the 3.1L V6 and the 3.3L V6. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 1991 Buick Century engines?
Yes. Every drivetrain part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of drivetrain problems on a 1991 Buick Century?
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 1991 Buick Century 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 1991 Buick Century?
First match the engine — each row shows which engine(s) the part fits. 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 1991 Buick Century
Drivetrain Parts for Other Buick Century Years
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