Swivel Thermostat Hsng. GM & Mopar 1-1/4in Hose

The Swivel Thermostat Housing by CSR Performance is a precision-engineered water neck designed for GM and Mopar engine builds requiring reliable coolant flow management. This component serves as the critical junction point between your radiator hose and engine block, directing coolant to the thermostat while maintaining proper system pressure. Whether you're restoring a classic V8, building a high-output street engine, or upgrading cooling system efficiency on a performance platform, this swivel housing eliminates problematic rigid connections that can cause hose stress and potential coolant leaks.

Manufactured from aluminum and finished in clear anodized coating, the Swivel Thermostat Housing features a 90-degree configuration with a 1-1/4 inch ID hose outlet, accommodating standard radiator hose sizes without adapter fittings. The swivel design allows ±15 degrees of articulation, eliminating binding and reducing vibration-induced fatigue on connections—a critical advantage in high-vibration environments like competition engines or vehicles with aggressive valve timing. The integrated O-ring seal provides a leak-free interface, while included hardware ensures straightforward installation without sourcing additional fasteners. Clear anodize protects the aluminum from corrosion while maintaining a clean, professional appearance in visible engine compartments.

This water neck is ideal for Chevy V8 applications and compatible Mopar platforms seeking OEM-style cooling solutions with modern flexibility. Mechanics and builders appreciate the swivel design when working with engine bay layouts where hose routing requires flexibility or when upgrading from cast-iron housings prone to cracking. Installation is straightforward—simply unbolt the original thermostat housing, transfer your existing thermostat, and secure the new housing with provided hardware. Weighing just 0.86 lbs, it adds negligible mass while significantly improving coolant system reliability and reducing the risk of hose abrasion failures common in modified engines.