01-04 Duramax LB7 PPE Stainless Steel Thermostat Housing Finish:Raw A 100% CNC-machined 6061 aluminum

A 100% CNC-machined 6061 aluminum coupling allows you to retain your trucks factory emissions components and allows for a quick install

The cooling continuesinside as 5/8-inch internal fins perform as heat sinks to draw away unwantedhigh fluid temps

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If the #4 cam bearing spins even slightly in the block it can cause immediate turbo damage

01-04 Duramax LB7 PPE Stainless Steel Thermostat Housing Finish:Raw A 100% CNC-machined 6061 aluminumRust is the enemy of your coolant system. Upgrade your rusty OEM thermostat housing cover with a Cast 304 Stainless Steel Thermostat Housing Cover from PPE. This direct bolt on replacement adds style and function to your engine bay. The stainless steel material is corrosion and rust resistant. We've engineered an easy way of bleeding off air from your coolant system by adding our Black Anodized Aluminum Bleeder Screw with a built in air channel and a