Part number 90420 is a polished billet aluminum thermostat housing designed for Chevrolet small‑ and big‑block V8 engines. It features a 45° outlet that swivels a full 360°, allowing precise alignment of a 1½″ radiator hose without restricting flow. Sealed with dual Buna‑N O‑rings—eliminating the need for gaskets—this housing includes stainless-steel mounting hardware. Ideal for custom engine bays, it delivers both functionality and premium appearance.

• Application: Chevy small‑ and big‑block V8 engines
• Outlet: 45° swivel, uses 1½″ ID hose
• Material: 6061‑T6 billet aluminum, polished finish
• Swivel range: 360° for precise hose routing
• Seal: Dual Buna‑N O‑ring
• Hardware: Includes stainless-steel bolts
• Features: Leak‑free design, polished aesthetics, durable construction