Wehrli 06-10 Duramax LBZ/LMM Dual CP3 Thermostat Housing Kit - Bengal Red

If you're working on a 2006-2010 Duramax LBZ or LMM with a Dual CP3 setup, this Wehrli Custom Fab Thermostat Housing Kit in Bengal Red is a smart upgrade. This kit replaces the stock upper radiator hose and coolant return pipe, rerouting coolant flow upwards and forward. This change makes it much easier to get to your driver-side fuel system components, which is a big help when you're servicing or upgrading your fuel system. It also clears out space for larger aftermarket turbochargers, especially those with a race cover or SXE style.

The main piece here is the thermostat housing, which is CNC machined from solid billet aluminum for a strong, well-built part that looks great. The kit includes the coolant pipe, silicone boots, and t-bolt clamps needed for installation. This updated routing not only improves access but also gives your engine bay a cleaner, more modern look. It's designed to work with factory VGT-style turbochargers and is compatible with dual alternator setups. Just be aware that it's not compatible with PPE dual fueler kits.

This kit is a solid option for a range of GM trucks, including the Chevrolet Silverado 2500 HD and 3500 HD, as well as the GMC Sierra 2500 HD and 3500 HD from 2006 through 2010. It's a necessary part if you're installing certain turbocharger styles and offers a significant improvement in accessibility and aesthetics for your Duramax engine.