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Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat - Mishimoto MMTS-RAM-94H
Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat - Mishimoto MMTS-RAM-94H
Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat - Mishimoto MMTS-RAM-94H
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Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat

Mishimoto
MISMMTS-RAM-94H
748354013931
Thermostats
20+ Units In Stock
$ 92.00 $ 83.95
$ 83.95

1994-1998 Ram 2500/3500 The Mishimoto high-temperature thermostat upgrades 1994-1998 Dodge Ram 2500 and 3500 trucks with 5.9L Cummins 12-valve engines. It opens at 221°F compared to stock 195°F to sustain higher coolant temperatures for improved turbocharger response and engine efficiency during performance driving.

Key Features

  • CNC-Machined Aluminum Housing: Precision-engineered for strength and corrosion resistance, ensuring long-term durability under extreme diesel operating conditions.
  • Stainless Steel Bellows and Spring: Provides consistent pressure and sealing for reliable operation across thousands of heat cycles.
  • Includes Gasket and Bolts: Complete kit simplifies installation and prevents coolant leaks.
  • 221°F Opening Temperature: Raises optimal operating range to enhance combustion efficiency, reduce turbo lag, and support high-boost setups in 5.9L Cummins engines.
  • Direct OEM Replacement: Bolts into factory location on 1994-1998 Ram 5.9L Cummins with no modifications required.
  • Direct-fit design tested for real-world Cummins applications.

Fitment

Years Make Model Application Notes
1994-1998 Dodge Ram 1500 Base, Laramie, ST, Sport
1994-1998 Dodge Ram 2500 Base
1994-1998 Dodge Ram 3500 Base

Specifications

Brand Mishimoto
Manufacturer Part Number MMTS-RAM-94H
Product Type Thermostats
Fitment Type Vehicle Specific
GTIN 748354013931
Condition New

What's Included

One new Mishimoto thermostats identified by manufacturer part number MMTS-RAM-94H. Hardware, adapters, hoses, clamps, fluids, wiring, tools, and companion parts are included only when expressly supplied for this exact part number.

About Mishimoto

Mishimoto develops automotive cooling, intake, oil-management, exhaust, drivetrain, and vehicle-accessory products. Fitment, dimensions, interfaces, and included components remain exact-part-number specific.

Related Mishimoto Products

Frequently Asked Questions

Will this Mishimoto product fit my 1994-1998 Dodge Ram 1500?
That vehicle range is listed, but confirm the engine, body configuration, production date, factory interfaces, and every current Mishimoto application note for this exact part number.

What connections and clearances should I verify?
Confirm every hose size, fitting, mounting point, fan or shroud clearance, sensor provision, fluid path, and surrounding component before installation.

Does the cooling system need to be serviced after installation?
Follow the vehicle and Mishimoto procedures for the exact product. Refill with the correct fluid, bleed trapped air, inspect for leaks, and recheck the level after heat cycling.

Installation Instructions

Follow the current Mishimoto instructions and vehicle service information for part number MMTS-RAM-94H. Verify every interface and clearance, work on a cool and safely supported vehicle, use the specified fluids, fasteners, seals, and torque procedures, inspect for leaks or contact, and recheck the installation after the first heat cycle.

Request For Information

Have questions about Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat? Fill out the form below and we'll get back to you by the next business day.
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