29 Drivetrain parts are listed for the 2004 Buick Regal, in 7 part types, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
The drivetrain system on the 2004 Buick Regal moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are CV Axle (17 parts), CV Joint Boot (6 parts) and Transfer Case Low Gear Roller Bearing (2 parts). The other 4 part types cover the remaining 4 parts.
The 2004 Buick Regal was sold with both the 3.8L V6 and the 3.8L V6 Supercharged. 17 parts fit every engine; the other 12 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2004 Buick Regal drivetrain parts are TRAKMOTIVE (5 parts), GM GENUINE (3 parts) and CARDONE (3 parts), plus 8 more brands. Quality grades include Standard Replacement, Heavy Duty and Economy.
5 parts on this 2004 Buick Regal page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GSP NCV10235 (CV Axle) and DORMAN 614003 (CV Joint Boot). Click any part number to see every vehicle that part fits.
Axle Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2004 Regal engines | 24202835 | 🇺🇸 US 🇨🇦 CA | Front RightIn 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.
This group shows a single part: GM GENUINE 24202835.
CV Axle
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CARDONE Fits: all 2004 Regal engines | 601255 | 🇺🇸 US 🇨🇦 CA | Remanufacturedwith Standard Neoprene Outboard Boot | View on Amazon |
| CARDONE Fits: 3.8L V6 Supercharged | 601256 | 🇺🇸 US 🇨🇦 CA | RemanufacturedPackage Contents: Complete Axle | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CARDONE Fits: all 2004 Regal engines | 661255HD | 🇺🇸 US 🇨🇦 CA | with Heavy Duty Thermoplastic Outboard Boot | View on Amazon |
| GSP Fits: all 2004 Regal engines | NCV10235XD | 🇺🇸 US 🇨🇦 CA | Xtreme Duty CV AxleFor Extreme Operating Temperatures | View on Amazon |
| TOP NOTCH Fits: all 2004 Regal engines | TN20034XD | 🇺🇸 US 🇨🇦 CA | Xtreme Duty | View on Amazon |
| TRAKMOTIVE Fits: all 2004 Regal engines | GM8045HDX | 🇺🇸 US 🇨🇦 CA | Extreme Duty | View on Amazon |
| TRAKMOTIVE Fits: 3.8L V6 | GM8054HDX | 🇺🇸 US 🇨🇦 CA | Extreme Duty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GSP Popular Fits: all 2004 Regal engines | NCV10235 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| TOP NOTCH Popular Fits: all 2004 Regal engines | TN20034 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| TRAKMOTIVE Popular Fits: 3.8L V6 | GM8054 | 🇺🇸 US 🇨🇦 CA | Does Not Include ABS Ring | View on Amazon |
| TRAKMOTIVE Popular Fits: all 2004 Regal engines | GM8045 | 🇺🇸 US 🇨🇦 CA | Does Not Include ABS Ring | View on Amazon |
| APWI Fits: all 2004 Regal engines | GM8222 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| APWI Fits: 3.8L V6 | GM8205 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| APWI Fits: 3.8L V6 Supercharged | GM8223 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| GSP Fits: all 2004 Regal engines | NCV10228 | 🇺🇸 US 🇨🇦 CA | Extended Length: 27.05 In | View on Amazon |
| TOP NOTCH Fits: all 2004 Regal engines | TN20031 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| TRAKMOTIVE Fits: 3.8L V6 Supercharged | GM8097 | 🇺🇸 US 🇨🇦 CA | 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.
17 CV Axle parts for the 2004 Buick Regal come from 5 brands — TRAKMOTIVE, CARDONE, GSP and 2 other brands. The "Popular" part is GSP NCV10235. 11 parts fit every engine; the other 6 are engine-specific.
The Economy section lists 2 options from CARDONE — the catalog's value-priced group. CARDONE 601255 is listed in this group.
In the Heavy Duty grade, TRAKMOTIVE, CARDONE, GSP and 1 other brand supply 5 parts: rated for severe service. A representative part number is CARDONE 661255HD.
In the Standard Replacement grade, TRAKMOTIVE, APWI, GSP and 1 other brand supply 10 parts: built to original-equipment specification. A representative part number is GSP NCV10235.
CV Joint Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: all 2004 Regal engines | 614003 | 🇺🇸 US 🇨🇦 CA | OuterJoint Diameter 3.44" | View on Amazon |
| DORMAN Fits: all 2004 Regal engines | 614004 | 🇺🇸 US 🇨🇦 CA | InnerJoint Diameter 3.50" | View on Amazon |
| DORMAN Fits: all 2004 Regal engines | 614700 | 🇺🇸 US 🇨🇦 CA | OuterQuick-Boot | View on Amazon |
| MEVOTECH Fits: all 2004 Regal engines | DX557 | 🇺🇸 US 🇨🇦 CA | Front Inner | View on Amazon |
| MEVOTECH Fits: 3.8L V6 Supercharged | DX524 | 🇺🇸 US 🇨🇦 CA | Front Outer | View on Amazon |
| MOOG Fits: 3.8L V6 | 5463 | 🇺🇸 US 🇨🇦 CA | Front Outerwith Hard Thermoplastic Boots | View on Amazon |
This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
6 CV Joint Boot parts for the 2004 Buick Regal come from 3 brands — DORMAN, MEVOTECH and MOOG. The "Popular" part is DORMAN 614003. 4 parts fit every engine; the other 2 are engine-specific.
This group includes DORMAN 614003, DORMAN 614004 and DORMAN 614700 and the remaining parts above.
CV Joint Boot Band
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: all 2004 Regal engines | 364038 | 🇺🇸 US 🇨🇦 CA | Front Outboard OuterLarge Clamp | View on Amazon |
This table covers the bands that clamp a CV boot to the joint.
One part is listed for the 2004 Buick Regal — GM GENUINE 364038.
CV Joint Lock Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 | 24205145 | 🇺🇸 US 🇨🇦 CA | Front Inner4 speed Automatic trans. | View on Amazon |
This table covers the CV Joint Lock rings.
One part is listed for the 2004 Buick Regal — GM GENUINE 24205145.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Fits: 3.8L V6 | 99193 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
This group shows a single part: NATIONAL 99193.
Transfer Case Low Gear Roller Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER Fits: 3.8L V6 | 764012 | 🇺🇸 US 🇨🇦 CA | Roller Clutch3rd clutch | View on Amazon |
| PIONEER Fits: 3.8L V6 | 764024 | 🇺🇸 US 🇨🇦 CA | 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.
PIONEER supplies both parts for the 2004 Buick Regal.
This group includes PIONEER 764012 and PIONEER 764024.
Buying Drivetrain Parts for a 2004 Buick Regal
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. Some drivetrain parts fit every engine; others are 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 CV Joint Boot .
Frequently Asked Questions
How many drivetrain parts fit the 2004 Buick Regal?
Our catalog currently lists 29 drivetrain parts for the 2004 Buick Regal across 7 subcategories and 11 brands, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each part is matched to the engine(s) it fits.
Do drivetrain parts differ between 2004 Buick Regal engines?
Some do. 17 parts fit every engine; the other 12 are engine-specific. Each row (and the filter at the top) shows which. 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 2004 Buick Regal?
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 2004 Buick Regal 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 2004 Buick Regal?
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 2004 Buick Regal
Drivetrain Parts for Other Buick Regal Years
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