Part number 90220 is a polished billet aluminum thermostat housing designed for Chevrolet small- and big-block V8 engines. It features a 0° outlet (straight up from the intake), compatible with 1½" inside-diameter radiator hoses. It seals with dual Buna-N O-rings—no gasket needed—and includes stainless steel mounting hardware.

• Application: Chevy small- and big-block V8 engines
• Outlet orientation: 0° straight-up, 1½″ hose connection
• Material: 6061-T6 billet aluminum
• Finish: Polished
• Seal: Dual Buna-N O-ring
• Hardware: Stainless steel nuts/bolts