2012 GMC Sierra 2500 HD Radiators

Genuine GM radiators for the 2012 GMC Sierra 2500 HD, at wholesale prices. Radiator part numbers split on engine, transmission cooler and tow package, and the fittings differ between them. GMT900 HD through 2014, K2XX HD from 2015 to 2019, and the T1XX HD from 2020.

How you know

Overheating in traffic, or coolant pooling at the front of the vehicle. On a heavy duty pickup, cab configuration, drivetrain and box length all split this group, so the badge on the tailgate is not enough to order from.

Buying OEM, briefly

• Factory warranty. Genuine radiators carry GM coverage aftermarket cannot match.
• Dealer parts, not dealer prices. Compare our radiators pricing against a counter quote.
• Genuine GM only. Every radiators listing carries the original factory part number.
• Fitment checked by a person. Send the VIN and we verify the radiators before the box leaves.
• Central shipping origin. Dallas keeps radiators transit times short nationwide.

Confirming fitment

Factory parts are built to the tolerances the vehicle was engineered around, not copied from a worn sample. A photo is rarely enough to order from. The VIN takes seconds and removes the guesswork. Freight is quoted at what it actually costs, not inflated to subsidize a headline discount.