GMC Water Necks and Thermostat Housings

Granatelli Motor Sports Billet Thermostat Housings

Granatelli Motor Sports billet thermostat housings will upgrade your OE plastic housing to prolong the life of your motor. Factory units are known to crack, resulting in coolant loss. These replacement housings are made from 6061-T6 aluminum—and include a high-flow thermostat with copper, brass, and stainless steel construction for high reliability. No gaskets are required; the housings use factory bolts on the outside to maintain OE look and function, and they can be installed with basic hand tools. Order the model recommended for your engine application.

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