Mishimoto 5.9L Cummins Thermostat for 1989–1993 Dodge D250/D350/W250/W350 – High-Temperature 87.5C

Engineered for the 5.9L 12-valve Cummins in classic Dodge Rams, this high-temperature thermostat raises coolant activation to 189.5°F (87.5°C) for faster engine warmup and improved in-cabin heat in cold climates. Designed as a direct replacement for 1989–1993 Dodge D250/D350/W250/W350 applications, the Mishimoto unit promotes quicker operating temperature attainment while maintaining reliable coolant flow characteristics and simple bolt-on installation.

Features:

• High-temperature activation at 189.5°F
• Temperature rating of 87.5C
• Designed for 5.9L 12v Cummins
• Direct replacement, bolt-on installation
• Includes high-quality replacement gasket

Contents:

• Thermostat
• Replacement gasket