Cummins Thermostat, 5284903

replaces: 3940632, 3968559, 5274887, 5284903, 4930594, 5274349, 5269131, 5478594

Our thermostats are manufactured with the heavy duty engine applications in mind to ensure proper performance and durability individual to each application.

Some of the features found on our thermostats are:
Sleeve and valve are lapped to offer low leakage
Individual calibration and wax actuators allow for a superior response time