Rear Remanufactured GM 11.5" Anti-Spin Differential with Cover — 3.73 Ratio, 14-Bolt, DRW/Chassis Cab — 2015–2019 Chevy Silverado 3500 HD / GMC Sierra 3500 HD

OEM Replacement GM 11.5 inch, 3.73 ratio, Anti-spin differential
Dual Wheel Rear Differential
Dual wheel and chassis cab applications, this WILL NOT fit pickup applications
2015-2019 Chevrolet Silverado 3500 HD - Dual Rear Wheel (DRW) and Chassis Cab Applications Only
2015-2019 GMC Sierra 3500 HD - Dual Rear Wheel (DRW) and Chassis Cab Applications Only

Brand: US Powertrain
UPC: 00810190611913
Axle Type: GM 11.5"
Color: Black
Cover Bolt Quantity: 14
Cover Included: Yes
Gear Ratio: 3.73
Grade Type: Remanufactured
Material: Steel/Iron
Mounting Hardware Included: No
Prop 65 - Long Label: This product may contain a chemical known to the state of California to cause cancer or birth defects. www.p65warnings.ca.gov
Prop 65 - Short Label: WARNING: Cancer – www.p65warnings.ca.gov
Prop 65 Y/N: Y
Ring Gear Outside Diameter: 11.5 Inch

Warranty Time: 3 YR / 36,000 MI

Interchange:

• GM Genuine Parts: 22958789
• GM Genuine Parts: 22958790
• GM Genuine Parts: 84174317
• GM Genuine Parts: 23337032

Applications:

• 2015-2019 Chevrolet Silverado 3500 HD - PartType: Differential - Position: Rear
• 2015-2019 GMC Sierra 3500 HD - PartType: Differential - Position: Rear

The GM 11.5-inch rear axle differential found in heavy-duty 3500 HD trucks is one of the most robust rear end assemblies in its class — and when it needs replacement, accepting anything less than a professionally remanufactured unit is a compromise no serious truck owner should make. US Powertrain's remanufactured GM 11.5" rear differential for the 2015–2019 Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD delivers the performance and durability these demanding platforms require. Engineered for dual-rear-wheel (DRW) and chassis cab configurations, this unit delivers a 3.73 gear ratio in an anti-spin configuration — the correct spec for a wide range of workhorse applications that rely on consistent, predictable rear axle behavior under heavy load. US Powertrain's remanufacturing process goes beyond simple core cleaning and reassembly. Each unit is inspected, and components are replaced or upgraded where original OEM design can be improved. The steel and iron construction of the GM 11.5-inch housing is retained for strength, while the remanufacturing process addresses the wear patterns that cause original units to fail. A differential cover is included, eliminating the need to source it separately.

This unit is not compatible with single-rear-wheel (SRW) pickup truck applications — verify your configuration before ordering.


Installing a remanufactured rear differential on a heavy-duty 3500 HD platform is a major drivetrain service that requires attention to preparation, fluid specification, and break-in procedure to achieve full service life. The GM 11.5-inch rear axle is a high-torque unit found in trucks that routinely operate under significant load — towing trailers, hauling heavy payloads, and serving commercial or fleet duty cycles. 

WARNING: This product contains chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. www.p65warnings.ca.gov
Verify your axle configuration before ordering.
All gear ratios are available — contact your distributor for alternate ratio options.
Mounting hardware is not included with this assembly. Inspect all existing carrier bolts, bearing caps, and pinion fasteners for wear or thread damage and replace as needed before installation.