
Mishimoto High-Temperature Thermostat for 5.9L Cummins (1994-1998)
Protect your 5.9L Cummins engine from overheating and improve its cold-weather performance with the Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat. Designed as a direct-fit replacement for the factory unit, this thermostat offers enhanced engine warm-up times thanks to its higher activation temperature of 190°F, compared to the factory's 180°F. This longer coolant restriction ensures quicker engine warm-up, making it ideal for cold climates.
Constructed with Mishimoto's commitment to quality, this thermostat is built to last and comes backed by the Mishimoto Lifetime Warranty, ensuring reliability and long-term performance.
Key Features:
- Direct Fit: Custom-made for 1994-1998 Dodge Ram 5.9L Cummins for seamless replacement.
- Higher Activation Temperature: Activates at 190°F to optimize engine warm-up and cooling.
- Improved Cold Weather Performance: Ideal for colder climates where quicker warm-up is essential.
- Mishimoto Lifetime Warranty: Guarantees superior quality and durability.
Upgrade your cooling system today with the Mishimoto High-Temperature Thermostat and ensure your engine runs reliably in all conditions

Mishimoto High-Temperature Thermostat for 5.9L Cummins (1994-1998)
Protect your 5.9L Cummins engine from overheating and improve its cold-weather performance with the Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat. Designed as a direct-fit replacement for the factory unit, this thermostat offers enhanced engine warm-up times thanks to its higher activation temperature of 190°F, compared to the factory's 180°F. This longer coolant restriction ensures quicker engine warm-up, making it ideal for cold climates.
Constructed with Mishimoto's commitment to quality, this thermostat is built to last and comes backed by the Mishimoto Lifetime Warranty, ensuring reliability and long-term performance.
Key Features:
Direct Fit: Custom-made for 1994-1998 Dodge Ram 5.9L Cummins for seamless replacement.
Higher Activation Temperature: Activates at 190°F to optimize engine warm-up and cooling.
Improved Cold Weather Performance: Ideal for colder climates where quicker warm-up is essential.
Mishimoto Lifetime Warranty: Guarantees superior quality and durability.
Upgrade your cooling system today with the Mishimoto High-Temperature Thermostat and ensure your engine[...]
Mishimoto High-Temperature Thermostat for 5.9L Cummins (1994-1998)
Protect your 5.9L Cummins engine from overheating and improve its cold-weather performance with the Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat. Designed as a direct-fit replacement for the factory unit, this thermostat offers enhanced engine warm-up times thanks to its higher activation temperature of 190°F, compared to the factory's 180°F. This longer coolant restriction ensures quicker engine warm-up, making it ideal for cold climates.
Constructed with Mishimoto's commitment to quality, this thermostat is built to last and comes backed by the Mishimoto Lifetime Warranty, ensuring reliability and long-term performance.
Key Features:
- Direct Fit: Custom-made for 1994-1998 Dodge Ram 5.9L Cummins for seamless replacement.
- Higher Activation Temperature: Activates at 190°F to optimize engine warm-up and cooling.
- Improved Cold Weather Performance: Ideal for colder climates where quicker warm-up is essential.
- Mishimoto Lifetime Warranty: Guarantees superior quality and durability.
Upgrade your cooling system today with the Mishimoto High-Temperature Thermostat and ensure your engine runs reliably in all conditions