Derale Performance In-Line Thermostat

The Derale Performance In-Line Thermostat (also called an in-line fluid thermostat switch or in-line fan control thermostat) automatically controls the electric cooling fan on a remote-mounted transmission or engine oil cooler. It senses fluid temperature as the fluid flows through the fitting. The fan then runs only when it's needed, which helps keep fluid temperatures in a safe range.

Key Features:

• Preset 180°F turn-on and 165°F turn-off temperatures for hands-off fan operation
• Anodized aluminum swivel housing for precise positioning and a clean installation
• AN threaded inlet and outlet connections that fit most Derale oil cooler cores
• Rated for up to 15 amps of continuous fan draw
• Simple two-terminal wiring: a switched 12V ignition source on one terminal and the fan motor positive lead on the other
• Designed and supported by Derale Performance, a respected name in performance cooling products

Derale's installation instructions call for mounting the thermostat directly at the inlet of the cooler core. Tighten the sensor by hand only. For best heat transfer, use a small amount of liquid thread sealer rather than thread tape or dielectric grease. Choose the model with the AN size that matches your cooler plumbing.