2001-2006 LB7/LLY/LBZ Duramax OEM Placement Coolant Tank Kit Flat Black

The Wehrli WCF100645-FB is a fabricated aluminum coolant tank kit designed to replace the OEM plastic coolant reservoir in 2001-2007 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks equipped with the 6.6L Duramax diesel engine (LB7, LLY, LBZ RPO codes). This kit enhances the engine bay's aesthetics and offers a more durable and serviceable solution compared to the factory unit. It includes a black anodized CNC machined billet aluminum cap, mounting hardware, an overflow hose, and a serviceable low coolant sensor to address common issues with OEM sensors. The tank utilizes OEM mounting points for easy installation with basic hand tools and requires no additional modifications on stock trucks.