The 2004 Avanti Ii has 37 drivetrain parts with verified fitment on this page — 6 part types and 9 brands, covering the 5.7L V8 engine. Each part includes a manufacturer part number and application notes.
On the 2004 Avanti Ii, 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 (17 parts), Differential Carrier Bearing / Race (8 parts) and Differential Pinion Seal (5 parts). The other 3 part types cover the remaining 7 parts.
Every part on this page is matched to the 5.7L V8 — the only engine offered in the 2004 Avanti Ii.
The most listed brands for 2004 Avanti Ii drivetrain parts are BCA (8 parts), WJB / INMOTION PARTS (8 parts) and TIMKEN (7 parts), plus 6 more brands. Quality grades include Standard Replacement and Economy.
7 parts on this 2004 Avanti Ii page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TIMKEN LM501314 (Differential Carrier Bearing / Race) and WJB / INMOTION PARTS WTM86649 (Differential Pinion Bearing / Race). Click any part number to see every vehicle that part fits.
Axle Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 5707 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| BCA | NBRP5707 | 🇺🇸 US | Repair Bearing | View on Amazon |
| MOTIVE GEAR | KIT5707 | 🇺🇸 US | Axle Differential Bearing and Seal Kit | View on Amazon |
This table covers the Axle Shaft 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 Axle Shaft Bearing parts are listed for the 2004 Avanti Ii, from ACDELCO, BCA and MOTIVE GEAR.
Part numbers include ACDELCO 5707, BCA NBRP5707 and MOTIVE GEAR KIT5707.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WTLM501314 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS | WTLM501349 | 🇺🇸 US | Rearwith 7.625 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular | LM501314 | 🇺🇸 US | Race | View on Amazon |
| TIMKEN Popular | LM501349 | 🇺🇸 US | Rear7.5", 8.8" Ring Gear | View on Amazon |
| ACDELCO | LM501349 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| BCA | NBLM501314 | 🇺🇸 US | Race | View on Amazon |
| BCA | NBLM501349 | 🇺🇸 US | Rearwith AAM Axle | View on Amazon |
| SCHAEFFLER | LM501314 | 🇺🇸 US | Race | View on Amazon |
This table covers the bearings and races that support the differential carrier.
8 Differential Carrier Bearing / Race parts for the 2004 Avanti Ii come from 5 brands — WJB / INMOTION PARTS, TIMKEN, BCA and 2 other brands. The "Popular" part is TIMKEN LM501314.
The Economy section lists 2 options from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS WTLM501314 is listed in this group.
In the Standard Replacement grade, TIMKEN, BCA, ACDELCO and 1 other brand supply 6 parts: built to original-equipment specification. A representative part number is TIMKEN LM501314.
Part numbers include TIMKEN LM501314, WJB / INMOTION PARTS WTLM501314 and WJB / INMOTION PARTS WTLM501349, among others listed above.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | RDS55072 | 🇺🇸 US | Rearwith 7.625 (In) Ring Gear | View on Amazon |
| VICTOR REINZ | 711482400 | 🇺🇸 US | Rearwith 7.625 IN Ring Gear | 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 for the 2004 Avanti Ii come from 2 brands — FEL-PRO and VICTOR REINZ.
This group includes FEL-PRO RDS55072 and VICTOR REINZ 711482400.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WTM86649 | 🇺🇸 US | Rear Outerwith 7.625 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WTM86610 | 🇺🇸 US | RaceCup Outside Diameter (In): 2.5310000000000001 In | View on Amazon |
| WJB / INMOTION PARTS | WTHM89210 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS | WTHM89249 | 🇺🇸 US | Rear Innerwith 7.625 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular | M802011 | 🇺🇸 US | Race | View on Amazon |
| TIMKEN Popular | M88048 | 🇺🇸 US | Rear Outer7.5", 8.8" Ring Gear | View on Amazon |
| TIMKEN Popular | M802048 | 🇺🇸 US | Rear Inner7.5", 8.8" Ring Gear | View on Amazon |
| ACDELCO | M86610X | 🇺🇸 US 🇨🇦 CA | GoldRace | View on Amazon |
| BCA | NBM86610 | 🇺🇸 US | Race | View on Amazon |
| BCA | NBM86649 | 🇺🇸 US | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBHM89210 | 🇺🇸 US | Race | View on Amazon |
| BCA | NBHM89249 | 🇺🇸 US | Rear Innerwith AAM Axle(s) | View on Amazon |
| NATIONAL | M86610 | 🇺🇸 US | Taper Bearing CupRace | View on Amazon |
| NATIONAL | HM89210 | 🇺🇸 US | Race | View on Amazon |
| NATIONAL | HM89249 | 🇺🇸 US | Rear Innerwith 7.625 IN Ring Gear | View on Amazon |
| SCHAEFFLER | M802011 | 🇺🇸 US | Race | View on Amazon |
| TIMKEN | M88010 | 🇺🇸 US | Race | View on Amazon |
This table covers the bearings and races on the differential pinion.
17 Differential Pinion Bearing / Race parts are listed for the 2004 Avanti Ii, from WJB / INMOTION PARTS, TIMKEN, BCA and 3 other brands. WJB / INMOTION PARTS WTM86649 carries the "Popular" badge.
Economy: 4 parts, from WJB / INMOTION PARTS. A representative part number is WJB / INMOTION PARTS WTM86649.
The Standard Replacement section: 13 options from TIMKEN, BCA, NATIONAL and 2 other brands. TIMKEN M802011 is listed in this group.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular | 3604 | 🇺🇸 US | Rear7.5", 8.8" Ring Gear | View on Amazon |
| BCA | NS710474 | 🇺🇸 US | Rear Outerwith AAM Axle | View on Amazon |
| NATIONAL | 710474 | 🇺🇸 US | Rear Outerwith 7.625 IN Ring Gear | View on Amazon |
| SCHAEFFLER | SS2796 | 🇺🇸 US | Rear2.66" O.D. X 0.55" Width | View on Amazon |
| WJB / INMOTION PARTS | WS710474 | 🇺🇸 US | Rear Outerwith 7.625 IN Ring Gear | 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 for the 2004 Avanti Ii come from 5 brands — TIMKEN, BCA, NATIONAL and 2 other brands. The "Popular" part is TIMKEN 3604.
Listed part numbers: TIMKEN 3604, BCA NS710474 and NATIONAL 710474, plus the other parts above.
Differential Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | RA320B | 🇺🇸 US | Rearwith 7.625 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WKRA320B | 🇺🇸 US | Rearwith 7.625 IN Ring Gear | View on Amazon |
This table covers kits that group the bearings, races and seals for a differential rebuild.
2 Differential Rebuild Kit parts are listed for the 2004 Avanti Ii, from NATIONAL and WJB / INMOTION PARTS.
Listed part numbers: NATIONAL RA320B and WJB / INMOTION PARTS WKRA320B.
Buying Drivetrain Parts for a 2004 Avanti Ii
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 5.7L V8 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 2004 Avanti Ii?
Our catalog currently lists 37 drivetrain parts for the 2004 Avanti Ii across 6 subcategories and 9 brands, covering the 5.7L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 2004 Avanti Ii?
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 Avanti Ii 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 Avanti Ii?
Every part on this page is matched to the 5.7L V8 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 2004 Avanti Ii
Drivetrain Parts for Other Avanti Ii Years
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