Chevrolet Silverado 3500HD Thermostat Housing Kit – Wehrli – Billet – Deore Gold – 2006–2010. This top-outlet billet thermostat housing and upper coolant pipe kit reroutes coolant flow for LBZ/LMM Duramax applications while delivering a durable, precision-machined upgrade.

Designed to replace the OEM upper radiator hose that crosses the driver-side valve cover and the factory coolant return pipe, this kit redirects flow upward and forward from the thermostat. The result is improved access to driver-side fuel system components and added room for larger aftermarket turbochargers. It includes a CNC-machined billet aluminum upper housing, coolant pipe, silicone boots, and T-bolt clamps, finished in Deore Gold powder coat. Compatible with factory VGT turbos and required for race cover style or SXE turbos mounted in the valley. Fitment: 2006–2010 Silverado 3500HD with LBZ/LMM. Not compatible with 2006–2007 GMC Sierra. Single (WCF100420) or twin CP3 (WCF100424); dual WCFab CP3 or dual alternator trucks use WCF100424. Replaces GM 19330105, 15792824, 25833204, 97361881.

Features

• Top-outlet routing for cleaner layout and component access
• CNC-machined billet aluminum upper housing
• Includes pipe, silicone boots, and T-bolt clamps
• Factory VGT compatible; SXE/race cover valley setups supported
• Deore Gold powder coat finish

Questions or need guidance on CP3 configuration or turbo fitment? Call our Austin shop at 512-982-9393 or our Los Angeles area shop at 562-981-6800. We offer installation and customization at both locations.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov