Part number BLK90220 is a black anodized billet aluminum thermostat housing for Chevrolet small- and big-block V8 engines. It features a 0° straight-out outlet for 1½″ inside-diameter radiator hoses and a 360° swivel flange for flexible hose alignment. The housing seals with dual Buna-N O-rings, eliminating the need for gaskets, and includes stainless steel mounting hardware. Its compact design and clean black finish make it ideal for custom engine bays. Not compatible with Tune Port injection systems.

• Application: Chevy small- and big-block V8 engines
• Outlet orientation: 0° straight-out, 1½″ hose connection
• Swivel range: 360°
• Material: 6061-T6 billet aluminum
• Finish: Black anodized
• Seal: Dual Buna-N O-rings
• Hardware: Includes stainless steel fasteners