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Mishimoto Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat
Mishimoto Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat
Mishimoto Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat
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Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat

Mishimoto
MISMMTS-RAM-94L
748354013948
Thermostats
20+ Units In Stock - Ships Next Business Day
$ 92.00 $ 83.95
$ 83.95

SKU: MMTS-RAM-94L | UPC: 748354013948

Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat - Fits 1994-2002 Ram 2500/3500

Direct replacement thermostat designed for 1994-2002 Dodge Ram trucks equipped with the 5.9L Cummins diesel engine. Lowers the opening temperature to 160°F from stock 195°F to reduce operating coolant temperatures by up to 20°F during heavy loads and towing. Enhances engine cooling efficiency while maintaining proper pressure for reliable daily driving and performance upgrades.

Key Features

  • 160°F Opening Temperature: Activates earlier than OEM to drop coolant temps up to 20°F improving turbo response and engine longevity under stress
  • Direct OEM Fitment: Matches factory specifications for bolt-on installation without modifications in stock thermostat housing
  • Included O-Ring Gasket: Ensures leak-proof seal preventing coolant loss and maintaining system pressure
  • Precision Wax Pellet Design: Reliable operation with stainless steel spring for consistent performance across temperature ranges
  • Brass Housing Construction: Corrosion-resistant material withstands diesel engine demands for extended service life

Product Notes

  • Compatible with all transmissions including 42RE 42RH 46RE 46RH NV3500 NV4500
  • Pair with Mishimoto radiator or intercooler for maximum cooling gains
  • Carefully packaged to arrive undamaged with protective inserts

Installation Notes

  • Professional installation recommended.
  • Drain coolant system completely before removal to avoid spills
  • Torque thermostat housing bolts to 10 ft-lbs using OEM hardware

This Part Fits

Year Make Model Submodel
1994-2002 Dodge Ram 2500 Base
1994-2002 Dodge Ram 2500 Custom
1994-2002 Dodge Ram 2500 SLT
1994-2002 Dodge Ram 3500 Base
1994-2002 Dodge Ram 3500 Custom
1994-2002 Dodge Ram 3500 SLT

Why Choose Mishimoto?

  • Backed by lifetime warranty for manufacturing defects
  • Test proven on dyno and real-world Cummins applications
  • Engineered in the USA with rigorous quality controls

Frequently Asked Questions

  • Q: Will this fit 1994-2002 5.9L Cummins 12-valve and 24-valve engines?
    A: Yes direct fit for all 1994-2002 Dodge Ram 2500/3500 5.9L Cummins diesel engines including 12V and early 24V models
  • Q: What material is the thermostat made from?
    A: Brass housing with precision wax pellet actuator and stainless steel spring for durability in high-heat diesel environments
  • Q: Does installation require any special tools?
    A: Standard hand tools suffice uses OEM mounting points and includes gasket no custom fabrication needed

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Secure retail box 4 x 3.5 x 2 inches
  • Weight: 0.15 lbs

Request For Information

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