Weiand Aluminum Swivel Water Neck Thermostat Housing

Weiand's Aluminum Swivel Water Neck Thermostat Housings are a practical, performance-focused upgrade for any engine's cooling system. Backed by a legacy that includes pioneering the first aluminum intake manifold in 1937, Weiand brings decades of precision engineering to every component they produce — and these thermostat housings are no exception.

The swivel water neck design solves one of the most common underhood challenges: radiator hose routing. By allowing the outlet angle to be positioned exactly where needed, these housings eliminate clearance conflicts that frequently arise with fixed-position units, aftermarket accessories, or custom engine bay layouts. The result is a cleaner, more professional installation whether you're building a show car or a hard-driven street or race machine.

Each housing is machined from premium aluminum, offering an excellent strength-to-weight ratio, superior heat dissipation, and long-term corrosion resistance — key advantages over traditional cast-iron housings. Every kit arrives complete with all components needed for a straightforward, leak-free installation.

Key Features:

• Swivel outlet design for flexible radiator hose routing and improved underhood clearance
• Lightweight, high-strength aluminum construction for excellent heat dissipation and corrosion resistance
• Complete kit includes thermostat housing, o-ring seal, plate, and all necessary hardware
• Multiple outlet angle configurations available across the product line
• Multiple finish options available to complement any engine bay aesthetic
• Legal for use on emissions-controlled, non-emissions-controlled, and race-only vehicles

From resolving tight hose routing clearances to dressing up the engine bay, Weiand Swivel Water Neck Thermostat Housings deliver the quality, fit, and finish that performance builders have trusted for generations. Browse the available variants to find the outlet configuration and finish that best suits your build.