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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 low-temperature thermostat for the 1989-1993 5.9L 12v Cummins. This Mishimoto thermostat activates at a lower temperature (174.2°F) compared to the factory thermostat (180°F). By lowering the activation temperature, coolant flows through the radiator earlier, maintaining lower fluid temperatures. The Mishimoto low-temperature thermostat is ideal for vehicles in warmer climates, or for use in vehicles experiencing extreme driving/towing conditions. This thermostat includes a high-quality replacement gasket and our signature Mishimoto Lifetime Warranty.
This Part Fits:
Mishimoto 89-93 Dodge 5.9L Cummins 79C High-Temperature Thermostat
SKU: MISMMTS-RAM-89L
Sale price
$89.53 CAD
Regular price
$97.87 CAD
Shipping calculated at checkout.
Special Order Item: Delivery times depend on manufacturer fulfillment and carrier performance. Expedited shipping reflects how the order is placed with the manufacturer and does not guarantee delivery dates. However, due to FI Performance’s industry relationships, we may be able to assist with expedited processing when possible. If timing is critical, please call us before ordering at (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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