March Performance Billet Aluminum Water Neck Thermostat Housing

March Performance Billet Aluminum Water Neck Thermostat Housings replace the stock thermostat housing (also called a water neck or thermostat housing) with a CNC-machined billet piece. They improve the look of the engine bay and give you better hose routing. The line covers a wide range of engine applications and offers several outlet styles.

Key Features:

• Billet construction: CNC machined in the USA from 6061-T6 aluminum.
• Finish options: Offered in polished, black anodized, or clearcoated finishes.
• Two-piece design: The housing is built in two pieces. On swivel models, the radiator hose neck rotates in the base so you can route the hose cleanly.
• Outlet styles: Available in a range of angles and outlet configurations, including straight and AN-style outlets, to suit different engines and hose setups.
• Sealing and hardware: Most styles include mounting hardware and an O-ring for a clean seal.
• Thermostat compatibility: Works with OEM and many aftermarket thermostats. The thermostat is not included.

Billet aluminum construction gives these housings a durable build and a clean, finished appearance. They suit street, performance, and show builds that need a better-looking and better-routed cooling system.