Mishimoto

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

SKU MMTS-RAM-89H

MPN misMMTS-RAM-89H

$64.95 · Available to order

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

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.

Confirmed vehicle fitment
YearsMakeModelSubmodelDrive
1989–1993DodgeW250Base
1989–1993DodgeD250Base
1989–1993DodgeD350Base
1989–1993DodgeW350Base
Specifications
CategoryCooling
Sub-CategoryThermostats
UPC840197702246
CARB ApprovedYes
Prop 65 WarningY
Special OrderYes
Weight0.26 lb
Dimensions (L×W×H)2.6 × 2.6 × 2.6 in