As our trucks age this thermostat housing often becomes the source of leaks. During service, always check for corrosion around its sealing surfaces. We see a lot of these housings with cracked mounting flanges and stripped threads. Nobody wants to do the job twice!
This housing fits 2004.5-2010 Duramax Trucks equipped with LLY, LBZ and LMM engine platforms.
Replaces GM 97361881
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