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
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