2010 Hummer H3 Radiators

Genuine GM radiators for the 2010 Hummer H3, at wholesale prices. Radiator part numbers split on engine, transmission cooler and tow package, and the fittings differ between them. GMT345 built on the Colorado and Canyon platform with a five-cylinder or 5.3L V8.

When you need them

Overheating in traffic, or coolant pooling at the front of the vehicle. On a mid-size SUV, trim and option content split this group within a single model year.

What sets these apart

• No hassle returns. If the radiators is not right, send it back.
• Warranty intact. OEM radiators keep coverage that an aftermarket part can void.
• Wholesale pricing. Most radiators numbers land well below dealer list.
• No aftermarket substitutes. These are GM radiators, not OE-style equivalents.

Getting the right part

A part validated on this vehicle behaves differently from one validated across a range of vehicles. Fitment questions are the one thing worth a phone call before checkout rather than after delivery. We ship from Dallas, which keeps transit times short across most of the country.