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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 (189.5°F) compared to the factory thermostat (180°F). 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.
This Part Fits:
Mishimoto 89-93 Dodge 5.9L Cummins 87.5C High-Temperature Thermostat
SKU: MISMMTS-RAM-89H
Sale price
$66.95 USD
Regular price
$74.00 USD
Shipping calculated at checkout.
Special Order Item: Due to the Brand or supplychain issues, these parts are limited & hard to get. However, with FIP's relationships in the industry, we tend to get things done faster than most. If timing is a concern, CALL US (203)644-0712.
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 |
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