GMC Sierra Thermostat Housing Kit - Wehrli - Dual CP3 - Fine Texture Black - ’06–’07. A billet top-outlet thermostat housing and upper coolant pipe kit designed for LBZ/LMM Duramax builds running Wehrli Dual CP3.

By replacing the factory upper radiator hose that crosses the driver-side valve cover and the coolant return pipe, this kit reroutes coolant upward and forward from the thermostat for cleaner plumbing. The layout improves access to driver-side fuel system components, creates space for larger aftermarket turbochargers, and pairs with factory VGT or valley-mounted race cover/SXE units. Compatible with dual alternator setups and engineered specifically for WCFab Dual CP3 systems; not compatible with PPE dual fueler kits. Note: not compatible with 2006–2007 GMC Sierra.

Features

• CNC-machined billet aluminum upper housing
• Includes coolant pipe, silicone boots, and T-bolt clamps
• Replaces GM 19330105, 15792824, 25833204, 97361881
• Fine Texture Black finish
• Application: 2006–2010 Duramax LBZ/LMM, Dual CP3

Have questions or planning an install? Call our Austin, TX shop at 512-982-9393 or our Los Angeles, CA area shop at 562-981-6800. We offer installation and customization services at both locations.

If you are considering multiple items, please contact us for potential shipping discounts.

We install on premises at both our Austin and Los Angeles locations.

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