Thermostat Housings

Upgrade your cooling system with CVF Racing Pontiac Thermostat Housings, designed for compatible 326, 350, 389, 400, 421, 428, and 455 Pontiac V8 engines. Also known as water necks, thermostat necks, or coolant outlets, these housings secure the thermostat and connect the upper radiator hose to your engine's cooling system. Ideal for classic Pontiac GTO, Firebird, Trans Am, LeMans, Tempest, and Grand Prix builds, CVF Racing thermostat housings provide a clean, custom appearance for restorations and performance upgrades. Whether you're replacing a factory water neck or completing a custom engine build, find quality Pontiac cooling system components from CVF Racing.