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Wehrli billet upper coolant pipe plug for LB7, LLY, LBZ and LMM Duramax engines allows installation of fixed-vane (non coolant-fed) turbochargers by enabling removal of the thermostat inside the upper coolant pipe that feeds the factory turbo. Machined from billet aluminum with a black anodized finish, it’s supplied for fabricators modifying the upper coolant passage on these Duramax models.
Wehrli LB7/LLY/LBZ/LMM Duramax Upper Coolant Pipe Plug
