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Mishimoto

Mishimoto 89-93 Dodge 5.9L Cummins 87.5C High-Temperature Thermostat

Manufacturer part number: MMTS-RAM-89H

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CODE: MISMMTS-RAM-89H
$71.00
$64.95 Available to order Sold out
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The 12-valve first-gen Cummins in your Ram is considered one of the best diesel engines ever produced, and for good reason. Fuel efficiency, torque, and simplicity are just a few characteristics that give the Cummins its stellar reputation. We're huge fans of the Cummins engine, which is why we've developed a high-temperature thermostat for the 1989-1993 5.9L 12v Cummins. This Mishimoto thermostat activates at a higher temperature (189.5F) compared to the factory thermostat (180F). By raising the activation temperature, coolant flows through the system later, promoting quicker engine warmup. The Mishimoto high-temperature thermostat is ideal for vehicles in cold climates, where rapid warmup and quicker in-cabin heat is vital. This thermostat includes a high-quality replacement gasket and our signature Mishimoto Lifetime Warranty.

  • Higher activation temperature restricts coolant circulation for a longer time, providing quicker engine warmup
  • Includes thermostat and high-quality replacement gasket
  • Ideal for cold climates

This Part Fits:

Year Make Model Submodel
1989-1993 Dodge D250 Base
1989-1993 Dodge D350 Base
1989-1993 Dodge W250 Base
1989-1993 Dodge W350 Base