Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009
JOIN GEARS TO SAVE 5%
Shop All Brands Shop All Vehicles

  2. Auto Parts
  3. Driveline and Axles
  4. Bearings
  5. Differential Pinion Bearing
  6. ACDelco S1279 for 2001

ACDelco S1279 Differential Pinion Bearing
for 2001 (please select make/model)

ACDelco S1279 Differential Pinion Bearing - 2001 Image 1
ACDelco S1279 Differential Pinion Bearing - 2001 Image 2
ACDelco S1279 Differential Pinion Bearing - 2001

ACDelco
Brand:ACDelco
Part Number: S1279
UPC: 00036666147995
Weight: 2.25 lbs
Condition:New



On Sale:

$74.97

Availability:
3 in Stock
Warehouse: US-12
Quantity:

Product Information

Description:

Get the ACDelco S1279 Differential Pinion Bearing for your 2001. Buy now and secure your purchase online!

GM Genuine Parts Differential Pinion Bearings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These bearings are tapered roller bearing elements that support and allow the pinion gear to rotate within the axle or final drive housing. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • Tapered roller bearing elements that support and allow the pinion gear to rotate within the axle or final drive housing

Specifications:

Bearing Type:
Tapered Roller
Country of Origin 6:
CA
Height (in):
2.25 in
Inside Diameter:
1.75 in.
Inside Diameter:
44.45 mm
Length (in):
4.75 in
Outside Diameter:
3.75 in.
Outside Diameter:
95.25 mm
Programming Required:
No
Race Included:
Yes
Weight (lb):
2.25 lb
Width:
30.96 mm
Width:
4.25 in.

Features and Benefits:

  • – Change differential fluids at vehicle recommended maintenance intervals
  • – Use recommended grease or differential fluid to keep the bearing properly lubricated

Specifications:

Country of Origin:
US

Select a vehicle to narrow ACDelco S1279 Differential Pinion Bearing fitment info!

Last Updated: 03/02/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
Chevrolet Express 2500

4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

Chevrolet Express 2500



4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2001

 

2001

 
Chevrolet Express 2500

5.7L V8 CNG OHV
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

Chevrolet Express 2500



5.7L V8 CNG OHV

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2002

 

2001

 

2002

 

2001

 
Chevrolet Express 3500

8.1L V8 Gas OHV
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

Chevrolet Express 3500



8.1L V8 Gas OHV

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
Chevrolet Express 3500

5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

Chevrolet Express 3500



5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2001

 

2001

 
Chevrolet Express 3500

5.7L V8 CNG OHV
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

Chevrolet Express 3500



5.7L V8 CNG OHV

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500

6.0L V8 Gas OHV
1
 
Inner
 
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Standard Cab Pickup
2 Doors
Mfr Code: NV4500/MW3
 

Chevrolet Silverado 2500



6.0L V8 Gas OHV

Inner R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Standard Cab Pickup
2 Doors
Mfr Code: NV4500/MW3

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500

6.0L V8 Gas OHV
1
 
Inner
 
TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Extended Cab Pickup
4 Doors
Mfr Code: 4L80-E
 

Chevrolet Silverado 2500



6.0L V8 Gas OHV

Inner TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Extended Cab Pickup
4 Doors
Mfr Code: 4L80-E

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500

6.0L V8 Gas OHV
1
 
Inner
 
TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Standard Cab Pickup
2 Doors
Mfr Code: 4L80-E
 

Chevrolet Silverado 2500



6.0L V8 Gas OHV

Inner TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Standard Cab Pickup
2 Doors
Mfr Code: 4L80-E

1 Per Vehicle

2001

 

2001

 
Chevrolet Silverado 2500

6.0L V8 Gas OHV
1
 
Inner
 
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Extended Cab Pickup
4 Doors
Mfr Code: NV4500/MW3
 

Chevrolet Silverado 2500



6.0L V8 Gas OHV

Inner R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Extended Cab Pickup
4 Doors
Mfr Code: NV4500/MW3

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500 HD

6.0L V8 Gas OHV
1
 
Inner
 
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LQ4
8th VIN Digit: U
Mfr Code: NV4500/MW3
 

Chevrolet Silverado 2500 HD



6.0L V8 Gas OHV

Inner R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LQ4
8th VIN Digit: U
Mfr Code: NV4500/MW3

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
Chevrolet Silverado 2500 HD

6.0L V8 Gas OHV
1
 
Inner
 
TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Eng: LQ4
8th VIN Digit: U
Mfr Code: 4L80-E
 

Chevrolet Silverado 2500 HD



6.0L V8 Gas OHV

Inner TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Eng: LQ4
8th VIN Digit: U
Mfr Code: 4L80-E

1 Per Vehicle

2001

 

2001

 
Chevrolet Silverado 2500 HD

6.6L V8 Diesel OHV Turbo
1
 
Inner
 
R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LB7
8th VIN Digit: 1
 

Chevrolet Silverado 2500 HD



6.6L V8 Diesel OHV Turbo

Inner R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LB7
8th VIN Digit: 1

1 Per Vehicle

2001

 

2001

 
Chevrolet Silverado 2500 HD

8.1L V8 Gas OHV
1
 
Inner
 
R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G
 

Chevrolet Silverado 2500 HD



8.1L V8 Gas OHV

Inner R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G

1 Per Vehicle

2001

 

2001

 
Chevrolet Suburban 2500

8.1L V8 Gas OHV
1
 
Inner
 
R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G
 

Chevrolet Suburban 2500



8.1L V8 Gas OHV

Inner R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G

1 Per Vehicle

2002

 

2001

 

2002

 

2001

 
GMC Savana 2500

5.7L V8 Bi-Fuel OHV
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

GMC Savana 2500



5.7L V8 Bi-Fuel OHV

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
GMC Savana 2500

4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

GMC Savana 2500



4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2002

 

2001

 

2002

 

2001

 
GMC Savana 3500

5.7L V8 Bi-Fuel OHV,
8.1L V8 Gas OHV
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

GMC Savana 3500



5.7L V8 Bi-Fuel OHV,
8.1L V8 Gas OHV

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2002

 

2001

 

2000

 

2002

 

2001

 

2000

 
GMC Savana 3500

4.3L V6 Gas OHV
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

GMC Savana 3500



4.3L V6 Gas OHV

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
GMC Savana 3500

5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo
1
 
Inner
 
TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
 

GMC Savana 3500



5.7L V8 Gas OHV,
6.5L V8 Diesel OHV Turbo

Inner TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
GMC Sierra 2500

6.0L V8 Gas OHV
1
 
Inner
 
TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Extended Cab Pickup
4 Doors
Mfr Code: 4L80-E
 

GMC Sierra 2500



6.0L V8 Gas OHV

Inner TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Extended Cab Pickup
4 Doors
Mfr Code: 4L80-E

1 Per Vehicle

2002

 

2001

 

2002

 

2001

 
GMC Sierra 2500

6.0L V8 Gas OHV
1
 
Inner
 
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Extended Cab Pickup
4 Doors
Mfr Code: NV4500/MW3
 

GMC Sierra 2500



6.0L V8 Gas OHV

Inner R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Extended Cab Pickup
4 Doors
Mfr Code: NV4500/MW3

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
GMC Sierra 2500 HD

6.0L V8 Gas OHV
1
 
Inner
 
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LQ4
8th VIN Digit: U
Mfr Code: NV4500/MW3
 

GMC Sierra 2500 HD



6.0L V8 Gas OHV

Inner R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LQ4
8th VIN Digit: U
Mfr Code: NV4500/MW3

1 Per Vehicle

2003

 

2002

 

2001

 

2003

 

2002

 

2001

 
GMC Sierra 2500 HD

6.0L V8 Gas OHV
1
 
Inner
 
TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Eng: LQ4
8th VIN Digit: U
Mfr Code: 4L80-E
 

GMC Sierra 2500 HD



6.0L V8 Gas OHV

Inner TWO INCH BODY RAISE I.D.(HVY),** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
R/AXL, TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
Eng: LQ4
8th VIN Digit: U
Mfr Code: 4L80-E

1 Per Vehicle

2001

 

2001

 
GMC Sierra 2500 HD

6.6L V8 Diesel OHV Turbo
1
 
Inner
 
R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LB7
8th VIN Digit: 1
 

GMC Sierra 2500 HD



6.6L V8 Diesel OHV Turbo

Inner R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: LB7
8th VIN Digit: 1

1 Per Vehicle

2001

 

2001

 
GMC Sierra 2500 HD

8.1L V8 Gas OHV
1
 
Inner
 
R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G
 

GMC Sierra 2500 HD



8.1L V8 Gas OHV

Inner R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G

1 Per Vehicle

2001

 

2001

 
GMC Yukon XL 2500

8.1L V8 Gas OHV
1
 
Inner
 
R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G
 

GMC Yukon XL 2500



8.1L V8 Gas OHV

Inner R/AXL,TIMKEN, HM903249-HM903210
OUTER BEARING)(W/CUP AND CONE
** 10.50 RING GEAR SAGINAW-AMERICAN AXLE **
Eng: L18
8th VIN Digit: G

1 Per Vehicle

Didn't find a match for your vehicle?

   See Other Choices



Customers who bought ACDelco S1279 Differential Pinion Bearing also purchased

ACDelco 12471684 Differential End Yoke
ACDelco 12471684 Differential End Yoke