160 Degree Thermostat - Mopar

The 160 Degree Thermostat - Mopar from MILODON is a precision engine cooling component engineered for classic Chrysler, Dodge, and Plymouth muscle cars and heavy-duty applications. This thermostat maintains optimal coolant flow by opening at 160°F, making it ideal for street-driven vehicles, summer cruising, and mild performance builds where consistent engine temperatures are critical. Vehicle enthusiasts and mechanics rely on accurate thermostats to prevent overheating, reduce parasitic drag from oversized cooling systems, and achieve the sweet spot between thermal efficiency and reliable operation.

Designed to OEM specifications, this thermostat features a spring-loaded poppet valve that responds precisely to coolant temperature, regulating flow through the radiator to maintain the desired operating window. The 160°F rating is lower than factory 180°F thermostats, allowing better heat dissipation during highway driving and warm climates—a preferred choice when upgrading to modern aluminum radiators or installing auxiliary cooling fans. MILODON's construction ensures reliable valve seating and repeatable performance across thousands of thermal cycles, critical for preserving gasket integrity and preventing hot spots that can damage heads or warp decks.

This thermostat fits Mopar engines, including Chrysler big-blocks and mid-engine platforms common in 1960s and 1970s Mopars. Mechanics installing this component should confirm water pump inlet compatibility and verify bypass hose clearance before final assembly. Weighing just 0.26 lbs and compact in design, installation requires no special tools—simply drain coolant, unbolt the housing, swap the old thermostat, and refill. This is an essential maintenance upgrade for any classic Mopar owner seeking reliable cooling performance or transitioning to modern radiator technology.