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Fulfillment From Multiple U.S. Warehouses
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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Mishimoto
Mishimoto High-Temperature Thermostat for 1999-2013 Dodge/Ram 2500/3500 (5.9L / 6.7L)
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits select 1999-2013 Dodge Ram 3500 and Ram 2500 trucks equipped with 5.9L or 6.7L Cummins engines.
The Mishimoto High-Temperature Thermostat is engineered specifically for vehicles operating in cold climates where maintaining engine heat is critical. By remaining closed longer than the factory unit, this thermostat restricts coolant circulation to allow the engine to reach its optimal operating temperature significantly faster. This improved thermal efficiency is essential for diesel engines in winter conditions, ensuring better cabin heater performance and reduced warm-up idle time.
- Direct-fit replacement for the factory thermostat
- Designed specifically for the 5.9L and 6.7L Cummins diesel engines
- Higher opening temperature promotes faster warm-up in cold weather
- Optimizes cooling system efficiency for cool climate operation
- Mishimoto Lifetime Warranty
- Manufacturer Part Number: MMTS-RAM-99H
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2002 | Dodge | Ram 3500 | Base |
| 2003-2010 | Dodge | Ram 3500 | Laramie |
| 2003-2010 | Dodge | Ram 3500 | SLT |
| 2006-2007 | Dodge | Ram 3500 | Sport |
| 2003-2010 | Dodge | Ram 3500 | ST |
| 2008-2009 | Dodge | Ram 3500 | SXT |
| 2007 | Dodge | Ram 3500 | TRX4 |
| 2013 | Ram | 2500 | Big Horn |
| 2011-2013 | Ram | 2500 | Laramie |
| 2011-2013 | Ram | 2500 | Laramie Longhorn |
| 2013 | Ram | 2500 | Lone Star |
| 2012-2013 | Ram | 2500 | Outdoorsman |
| 2011-2013 | Ram | 2500 | Power Wagon |
| 2011-2013 | Ram | 2500 | SLT |
| 2011-2013 | Ram | 2500 | ST |
| 2013 | Ram | 2500 | Tradesman |
Choose your Location
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
Mishimoto High-Temperature Thermostat for 1999-2013 Dodge/Ram 2500/3500 (5.9L / 6.7L)
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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Our prices are updated daily to ensure we can offer you the best possible price. In the unlikely case that you have found a lower price, please contact us at hello@atlusauto.com and we'll do our best to answer your query right away!
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Fits select 1999-2013 Dodge Ram 3500 and Ram 2500 trucks equipped with 5.9L or 6.7L Cummins engines.
The Mishimoto High-Temperature Thermostat is engineered specifically for vehicles operating in cold climates where maintaining engine heat is critical. By remaining closed longer than the factory unit, this thermostat restricts coolant circulation to allow the engine to reach its optimal operating temperature significantly faster. This improved thermal efficiency is essential for diesel engines in winter conditions, ensuring better cabin heater performance and reduced warm-up idle time.
- Direct-fit replacement for the factory thermostat
- Designed specifically for the 5.9L and 6.7L Cummins diesel engines
- Higher opening temperature promotes faster warm-up in cold weather
- Optimizes cooling system efficiency for cool climate operation
- Mishimoto Lifetime Warranty
- Manufacturer Part Number: MMTS-RAM-99H
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2002 | Dodge | Ram 3500 | Base |
| 2003-2010 | Dodge | Ram 3500 | Laramie |
| 2003-2010 | Dodge | Ram 3500 | SLT |
| 2006-2007 | Dodge | Ram 3500 | Sport |
| 2003-2010 | Dodge | Ram 3500 | ST |
| 2008-2009 | Dodge | Ram 3500 | SXT |
| 2007 | Dodge | Ram 3500 | TRX4 |
| 2013 | Ram | 2500 | Big Horn |
| 2011-2013 | Ram | 2500 | Laramie |
| 2011-2013 | Ram | 2500 | Laramie Longhorn |
| 2013 | Ram | 2500 | Lone Star |
| 2012-2013 | Ram | 2500 | Outdoorsman |
| 2011-2013 | Ram | 2500 | Power Wagon |
| 2011-2013 | Ram | 2500 | SLT |
| 2011-2013 | Ram | 2500 | ST |
| 2013 | Ram | 2500 | Tradesman |
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