2004-2010 GM 6.6L Duramax Thermostat Housing Cover LLY LBZ LMM Raw Alliant The middle Earl's Vapor Guard™

The middle Earl's Vapor Guard™ Barrier is a Thermoplastic layer that provides superior fuel isolation and virtually eliminates vapors from escaping through the hose

designed for a greater range of motion and improved wheel articulation compared to OE replacements

Accumulator body enhanced oil flow

Banks hot and cold side Boost-Tubes have up to 105 percent greater flow area than stock

2004-2010 GM 6.6L Duramax Thermostat Housing Cover LLY LBZ LMM Raw Alliant The middle Earl's Vapor Guard™Rust 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