The Mishimoto MMTS-RAM-94H is a 190 degree F high temperature thermostat for 1994-1998 Dodge Ram trucks with the 5.9L 12 valve Cummins. It is a direct fit replacement for the 180 degree factory thermostat.

Compared to stock it holds coolant in the engine longer for faster warm-up, which suits cold climates. Swap it in any time the factory unit sticks or ages out.

• 190 F Opening: Versus 180 F factory.
• Direct Fit: Replaces the OE thermostat.
• Best For: Ideal for cold climates.
• 12V Specific: 1994-1998 5.9L Cummins.
• Lifetime Warranty: Mishimoto limited lifetime.

Technical Specifications

• Part Number: MMTS-RAM-94H
• Manufacturer: Mishimoto
• Opening Temperature: 190 F
• Factory Opening: 180 F
• Warranty: Limited Lifetime

Vehicle Fitment & Technical Installation Notes

• Fitment: 1994-1998 Dodge Ram 2500 and 3500 5.9L 12V Cummins.
• Installation Tip: Install a new housing gasket and make sure the thermostat seats fully in its recess before tightening the housing bolts.