23119772 Rear Remanufactured GM 11.5" Differential — 3.73 Ratio, Posi-Traction — 2011–2014 Chevy Silverado 3500 HD & GMC Sierra 3500 HD Cab & Chassis Dual Wheel

The GM 11.5-inch rear differential is one of the most robust axle platforms in the heavy-duty light truck segment, and when it needs replacement, choosing the right remanufactured unit separates a lasting repair from a repeat failure. US Powertrain's 435-281AP is a professionally remanufactured GM 11.5" rear differential engineered for 2011-2014 Chevrolet Silverado 3500/3500 HD and GMC Sierra 3500 HD Cab & Chassis trucks equipped with dual rear wheels and factory Posi-Traction. This unit is purpose-built for the demanding load and torque requirements of cab-and-chassis commercial and fleet applications. At the core of US Powertrain's process is a commitment that goes beyond simple reassembly. Each unit is inspected for original equipment design weaknesses, and where improvements can be made, they are implemented before the assembly leaves the facility. The result is a differential that not only meets original specifications but in many cases exceeds them. The 435-281AP features a 3.73 gear ratio matched to factory specifications, a steel and iron housing construction finished in black paint for corrosion resistance, a 14-bolt housing, 14-bolt cover, and a 11.5-inch ring gear — all corresponding to OEM GM dimensions. The cover is included with the unit, streamlining the installation process. Manufactured in the United States, this differential is a direct-fit replacement that restores proper axle function without modification. Important application note: this unit is designed exclusively for Cab & Chassis body style trucks with dual rear wheels and Posi-Traction. It is not compatible with standard single-rear-wheel pickup applications. Verify your vehicle's body style and axle configuration before ordering.

OEM Replacement GM 11.5 inch, 3.73 ratio, Anti-spin differential

Dual wheel and chassis cab applications, this WILL NOT fit pickup applicatiions

Remanufactured GM 11.5" rear differential with Posi-Traction, 3.73 gear ratio, steel/iron construction, black paint finish, cover included, 14-bolt housing. Cab & Chassis, dual-wheel applications only. Not for standard pickup fitment.

US Powertrain Remanufactured GM 11.5" Rear Differential - 3.73 Ratio, Posi-Traction, Cover Included - 2011-2014 Chevy Silverado 3500/3500 HD & GMC Sierra 3500 HD Cab & Chassis Dual Wheel

Professionally remanufactured GM 11.5" rear differential restores OEM axle function and load capacity to heavy-duty Cab & Chassis dual-wheel applications.

Factory 3.73 gear ratio matches original drivetrain calibration, preserving towing capacity, throttle response, and powertrain harmony on matched applications.

Posi-Traction limited-slip functionality is retained, delivering improved traction and reduced wheel spin under load — critical for commercial and fleet duty cycles.

Steel and iron construction with black paint finish provides the structural integrity and corrosion resistance required by commercial vehicle service environments.

Manufactured in the United States and engineered to meet or exceed OEM specifications — a reliable choice for fleet managers and shop owners who cannot afford a repeat repair.

US Powertrain reviews each product for OEM design flaws and applies engineering improvements during remanufacturing, delivering a differential that can outperform the original.

WARNING: This product contains chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. For more information: www.p65warnings.ca.gov

UPC: 00810190612545
Axle Type: GM 11.5"
Color: Black
Cover Bolt Quantity: 14
Cover Included: Yes
Finish: Black Paint
Gear Ratio: 3.73
Grade Type: Remanufactured
Housing Bolt Quantity: 14
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
with Dual Wheels, with Posi-Traction

Warranty Time: 3 YR/36,000MI

Applications:

• 2011-2013 Chevrolet Silverado 3500 - PartType: Differential - Position: Rear
• 2011-2014 Chevrolet Silverado 3500 HD - PartType: Differential - Position: Rear
• 2011-2014 GMC Sierra 3500 HD - PartType: Differential - Position: Rear