Wehrli 06-10 Duramax LBZ/LMM Thermostat Housing Kit For Dual CP3 - Gloss White

If you're working on the fuel system of your 2006-2010 Duramax LBZ or LMM, especially if you're installing a Dual CP3 setup, this thermostat housing kit from Wehrli Custom Fabrication is a smart move. It reconfigures the coolant routing from the thermostat, sending it upwards and forwards instead of crossing over the driver-side valve cover. This change significantly improves access to your fuel system components, which can make a big difference when you're trying to get to things like the CP3 pumps or injectors.

This kit is CNC machined from billet aluminum and finished in a clean gloss white. It replaces the stock upper radiator hose and coolant return pipe with a new, upward-facing outlet. This updated routing not only helps with access but also creates more room in the engine bay, which is particularly useful if you're planning to install larger aftermarket turbochargers, like the race cover or SXE style turbos. It's also compatible with factory VGT-style turbos and dual alternator setups, though it's not designed to work with PPE dual fueler kits. The kit comes complete with the coolant pipe, silicone boots, and t-bolt clamps needed for installation.

This Wehrli thermostat housing kit is a well-built upgrade that not only makes working on your Duramax easier but also gives your engine bay a cleaner, more modern look. It's a popular choice for those looking to optimize their engine bay for performance modifications and improved serviceability.