Wehrli 06-10 Duramax LBZ/LMM Thermostat Housing Kit - WCFab Red

Starting with a CNC machined billet aluminum thermostat housing, this Wehrli kit updates the coolant routing for your 2006-2010 LBZ or LMM Duramax. It replaces the factory upper radiator hose that typically crosses over the driver side valve cover, along with the coolant return pipe. This change reroutes coolant upwards and forward from the thermostat, which is a smart move for a few reasons. It significantly improves access to the driver side fuel system components, making maintenance or upgrades much easier. Plus, it creates more room for larger aftermarket turbochargers, which is a common consideration for Duramax owners looking to boost performance.

Beyond the practical benefits, this kit also updates the overall look of your engine bay with its custom WCFab Red powder coat finish. It's designed to work with factory VGT style turbochargers, and it's also required if you're installing race cover style or SXE turbochargers mounted in the valley. The kit comes complete with the coolant pipe, silicone boots, and t-bolt clamps, so you have the necessary pieces for installation. This is a well-built upgrade that addresses common access and space constraints in these Duramax engines.

This thermostat housing kit is a solid option for a range of Duramax trucks, including models like the Chevrolet Silverado 2500 HD and GMC Sierra 3500 HD. It's a considered purchase that offers both functional improvements and a cleaner engine bay aesthetic. Refer to the manufacturer's installation instructions for specific details on fitting this to your vehicle.