Part number 90120 is a precision-machined thermostat housing designed for Chevrolet small‑ and big‑block V8 engines. Featuring a straight‑up outlet for 1½″ inside-diameter radiator hoses, it’s crafted from 6061‑T6 billet aluminum and polished to a mirror finish. The housing seals using dual Buna-N O‑rings, eliminating the need for gaskets or sealant, and swivels 360° for flexible hose routing. Stainless-steel fasteners are included for secure installation. Ideal for custom engine bays where style and functionality matter.

• Fits Chevrolet small-block and big-block V8 engines
• Hose outlet: straight‑up, 1½″ ID
• Construction: polished 6061‑T6 billet aluminum
• Seal: dual Buna‑N O‑rings, no gasket required
• Hardware: stainless-steel fasteners included
• Feature: swivels full 360° to adjust hose alignment