Mishimoto misMMTS-RAM-94L Dodge 5.9L Cummins Low-Temperature Thermostat

A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 5.9L cooling system with a Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat! This thermostat is designed as a direct-fit replacement for your aged factory unit. The Mishimoto thermostat has a lower activation temperature (174 degrees Fahrenheit) compared to the factory thermostat (180 degrees Fahrenheit). The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. This thermostat is ideal for use in warmer climates or under extreme towing/driving conditions. As with all our products, this thermostat includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship. Engine coolant thermostat designed to regulate coolant flow and maintain optimal operating temperature. Ensures efficient warm-up, prevents overheating, and supports reliable performance with a precise fit. 1996 Dodge Ram 1500 Base 5.9 Liter 42RE, 1994-1995 Dodge Ram 1500 Base 5.9 Liter 42RH, 1994-1995 Dodge Ram 1500 Base 5.9 Liter 42RH, 1996 Dodge Ram 1500 Base 5.9 Liter 46RE, 1994-1995 Dodge Ram 1500 Base 5.9 Liter 46RH, 1994-1995 Dodge Ram 1500 Base 5.9 Liter 46RH, 1994-1996 Dodge Ram 1500 Base 5.9 Liter NV3500, 1994-1996 Dodge Ram 1500 Base 5.9 Liter NV3500, 1994-1996 Dodge Ram 1500 Base 5.9 Liter NV3500, 1994-1996 Dodge Ram 1500 Base 5.9 Liter NV4500, 1994-1996 Dodge Ram 1500 Base 5.9 Liter NV4500, 1994-1996 Dodge Ram 1500 Base 5.9 Liter NV4500, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter 42RE, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter 42RE, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter 46RE, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter 46RE, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter NV3500, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter NV3500, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter NV4500, 1997-1998 Dodge Ram 1500 Laramie 5.9 Liter NV4500, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter 42RE, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter 42RE, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter 46RE, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter 46RE, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter NV3500, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter NV3500, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter NV4500, 1997-1998 Dodge Ram 1500 Sport 5.9 Liter NV4500, 1997-1998 Dodge Ram 1500 ST 5.9 Liter 42RE, 1997-1998 Dodge Ram 1500 ST 5.9 Liter 42RE, 1997-1998 Dodge Ram 1500 ST 5.9 Liter 46RE, 1997-1998 Dodge Ram 1500 ST 5.9 Liter 46RE, 1997-1998 Dodge Ram 1500 ST 5.9 Liter NV3500, 1997-1998 Dodge Ram 1500 ST 5.9 Liter NV3500, 1997-1998 Dodge Ram 1500 ST 5.9 Liter NV4500, 1997-1998 Dodge Ram 1500 ST 5.9 Liter NV4500, 1994-1998 Dodge Ram 2500 Base 5.9 Liter 46RE, 1994-1998 Dodge Ram 2500 Base 5.9 Liter 46RE, 1994-1998 Dodge Ram 2500 Base 5.9 Liter 46RE, 1994-1998 Dodge Ram 2500 Base 5.9 Liter 46RE, 1994-1998 Dodge Ram 2500 Base 5.9 Liter 46RE ...See Application Guide for Additional Fitments

• Activates at lower temperature so coolant flows through system earlier
• Allows for cooler engine temperatures
• Ideal for warm climates

The Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat is designed as a direct-fit replacement for an aged factory thermostat. It regulates coolant flow to support efficient warm-up, reliable operating temperatures, and protection against overheating. With a lower activation temperature than the factory thermostat, this thermostat allows coolant to flow through the engine earlier.

Activating at 174 degrees Fahrenheit compared with the factory thermostat’s 180-degree activation temperature, the Mishimoto thermostat is designed to help maintain lower engine temperatures. It is suited for use in warm climates and under extreme towing or driving conditions.

Key Features & Performance Benefits

• Lower activation temperature: Opens at 174 degrees Fahrenheit to allow earlier coolant flow.
• Cooler engine operation: Supports lower and more consistent engine temperatures.
• Direct-fit replacement: Designed to replace the factory thermostat.
• Reliable temperature regulation: Helps manage coolant flow, efficient warm-up, and overheating prevention.

Key Product Specifications & Technical Data

• Brand: Mishimoto
• Part number: misMMTS-RAM-94L
• Product type: Engine coolant thermostat
• Application: Dodge 5.9L Cummins cooling system
• Activation temperature: 174 degrees Fahrenheit
• Factory thermostat reference temperature: 180 degrees Fahrenheit
• Fitment type: Direct-fit replacement
• Warranty: Mishimoto Lifetime Warranty

What's Included in the Box

• One Mishimoto low-temperature thermostat

Fitment

Fits 1994–1998 Dodge Ram 2500 and 1994–1998 Dodge Ram 3500 models equipped with the 5.9-liter engine. See the application guide for additional fitments.

Fitments:
1994 Dodge Ram 2500 Base
1994 Dodge Ram 3500 Base
1995 Dodge Ram 2500 Base
1995 Dodge Ram 3500 Base
1996 Dodge Ram 2500 Base
1996 Dodge Ram 3500 Base
1997 Dodge Ram 2500 Base
1997 Dodge Ram 3500 Base
1998 Dodge Ram 2500 Base
1998 Dodge Ram 3500 Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1