Skip to product information
1 of 12

Mishimoto

Mishimoto 89-93 Dodge 5.9L Cummins 79C High-Temperature Thermostat

Regular price
$73.95
Regular price
$71.00
Sale price
$73.95
Shipping calculated at checkout.

In Stock: 0

Orders by 1pm PST ship same business day

Free Shipping w/3-4 Day Delivery

Authorized Dealer

Fitment Guarantee

30-Day Hassle Free Returns


Product Specification:

SKU:MISMMTS-RAM-89L

MPN: MMTS-RAM-89L

UPC: 840197702239

Weight: 0.29 lb

Type: Thermostats



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:

Year Make Model Submodel
1989-1993 Dodge D250 Base
1989-1993 Dodge D350 Base
1989-1993 Dodge W250 Base
1989-1993 Dodge W350 Base
Photo - Primary
Photo - Primary
User 2
User 3
User 1
User 3
User 2
Photo - in package
User 1
Photo - in package
Logo Image