185 Temperature Switch Stainless Steel

The 185 Temperature Switch Stainless Steel from SPAL Advanced Technologies is a precision thermal management component designed for cooling system applications where reliable engine temperature regulation is critical. Built for performance vehicles, race cars, and heavy-duty equipment, this switch automatically engages cooling fans at a preset threshold to prevent engine overheating. The stainless steel construction ensures durability in demanding under-hood environments where corrosion resistance and longevity are essential.

This temperature switch activates at 185 degrees and disengages at 165 degrees, providing a tight hysteresis band that minimizes fan cycling and reduces parasitic load on the engine. The 3/8 inch NPT (National Pipe Thread) connection accommodates standard cooling system ports, allowing straightforward installation into radiators or water distribution blocks. Stainless steel construction resists oxidation and corrosion from coolant exposure, coolant additives, and moisture—extending service life in both street and racing applications where reliability cannot be compromised.

Ideal for custom cooling systems, engine swaps, and performance builds, this switch suits any application requiring precise thermal control without reliance on engine computer management. Racers, hot rod builders, and off-road enthusiasts benefit from its mechanical simplicity and fail-safe operation when electrical systems may be limited or custom. Installation requires a radiator boss or adapter that accepts 3/8 inch NPT fittings; verify your cooling system port compatibility before ordering to ensure proper fitment and function.