MP1226XHD Remanufactured Transfer Case — Chain Drive, Aluminum Housing, Offset Output | 2007–2010 Chevy/GMC Silverado/Sierra 2500HD/3500HD 4WD Non-Electric

When your Chevy Silverado or GMC Sierra heavy-duty truck loses 4WD capability, you need a transfer case replacement you can trust to put you back on the road — and back to work. The US Powertrain Remanufactured MP1226XHD Transfer Case is engineered to restore the full 4WD performance your 2007–2010 2500HD or 3500HD was built to deliver. Each unit is remanufactured in the United States to exacting standards, with every critical internal component inspected, measured, and replaced as required to meet or exceed original equipment specifications. The MP1226XHD features a chain-driven design with an aluminum housing that provides the durability and reduced weight that these demanding truck platforms require. The offset output shaft configuration matches the factory drivetrain geometry precisely, ensuring proper driveshaft alignment and eliminating the vibration and wear that an improperly fitted unit would cause. US Powertrain backs every remanufactured transfer case with a 3-year/36,000-mile warranty — a confidence statement that reflects the quality of the rebuild process and the integrity of every component inside. For shops and fleet operators who depend on these trucks for heavy hauling, towing, and off-pavement work, this unit delivers the reliability that keeps downtime to a minimum and vehicles doing the job they were built for.

US Powertrain Remanufactured MP1226XHD Transfer Case - Chain Drive, Aluminum Housing, Offset Output - 2007-2010 Chevy/GMC 2500HD/3500HD

Remanufactured in the United States to OE specifications — every critical component inspected, measured, and replaced to restore full 4WD performance

Chain-driven MP1226XHD design matches the factory drivetrain configuration for 2007–2010 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks

Aluminum housing provides factory-correct strength and reduced weight compared to cast-iron alternatives, maintaining proper driveline balance

Offset output shaft position matches OE driveshaft geometry, eliminating vibration and premature U-joint wear caused by drivetrain misalignment

OEM cross-reference part number 12578115 — engineered as a direct replacement that installs using existing mounting points and hardware

Backed by a 3-year/36,000-mile warranty — one of the strongest coverage commitments in the remanufactured drivetrain category

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

Brand: US Powertrain
UPC: 00810190601167
Drive Type: Chain Driven
Gear Or Chain Type: Chain
Grade Type: Regular
Housing Material: Aluminum
Mounting Hardware Included: NO
Output Shaft Position: Offset
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
Wiring Harness Included: N
Non-Electric

Warranty Time: 3 YR/36,000 Mi

Interchange:

• General Motors: 12578115
• General Motors: 12578114

Applications:

• 2007-2007 Chevrolet Silverado 2500 HD - PartType: Transfer Case - Position: N/A
• 2007-2007 Chevrolet Silverado 3500 Classic - PartType: Transfer Case
• 2007-2010 Chevrolet Silverado 3500 HD - PartType: Transfer Case
• 2007-2010 GMC Sierra 2500 HD - PartType: Transfer Case
• 2007-2007 GMC Sierra 3500 Classic - PartType: Transfer Case
• 2007-2010 GMC Sierra 3500 HD - PartType: Transfer Case
• 2008-2010 Chevrolet Silverado 2500 HD - PartType: Transfer Case