Mishimoto Dodge 5.9L/6.7L Cummins Low-Temperature Thermostat
Fits 1999–2010 Dodge Ram 2500 / 3500, 2011–2013 Ram 2500 · 5.9L / 6.7L Cummins
All 26 applications- Authorized dealerGenuine Mishimoto parts, sourced direct
- 30-day returnsSee the return policy
- Diesel techs on the line908-223-9744, call or text
- Secure checkout
1999-2001 Dodge Ram 1500 Laramie 5.9 Liter 42RE, 2003 Dodge Ram 1500 Laramie 5.9 Liter 45RFE, 1999-2001 Dodge Ram 1500 Laramie 5.9 Liter 46RE, 2003 Dodge Ram 1500 Laramie 5.9 Liter 46RE, 1999-2001 Dodge Ram 1500 Laramie 5.9 Liter NV3500, 2003 Dodge Ram 1500 Laramie 5.9 Liter NV3500, 1999-2001 Dodge Ram 1500 Laramie 5.9 Liter NV4500, 2003 Dodge Ram 1500 Laramie 5.9 Liter NV4500, 2002-2003 Dodge Ram 1500 SLT 5.9 Liter 45RFE, 2002-2003 Dodge Ram 1500 SLT 5.9 Liter 46RE, 2002-2003 Dodge Ram 1500 SLT 5.9 Liter NV3500, 2002-2003 Dodge Ram 1500 SLT 5.9 Liter NV4500, 1999-2001 Dodge Ram 1500 Sport 5.9 Liter 42RE, 1999-2001 Dodge Ram 1500 Sport 5.9 Liter 46RE, 1999-2001 Dodge Ram 1500 Sport 5.9 Liter NV3500, 1999-2001 Dodge Ram 1500 Sport 5.9 Liter NV4500, 1999-2001 Dodge Ram 1500 ST 5.9 Liter 42RE, 2002-2003 Dodge Ram 1500 ST 5.9 Liter 45RFE, 1999-2003 Dodge Ram 1500 ST 5.9 Liter 46RE, 1999-2003 Dodge Ram 1500 ST 5.9 Liter NV3500, 1999-2003 Dodge Ram 1500 ST 5.9 Liter NV4500, 2003 Dodge Ram 2500 5.9 Liter 45RFE, 1999-2003 Dodge Ram 2500 5.9 Liter 46RE, 1999-2003 Dodge Ram 2500 5.9 Liter 47RE, 2003-2009 Dodge Ram 2500 5.9 Liter 48RE, 1999-2005 Dodge Ram 2500 5.9 Liter NV4500, 1999-2004 Dodge Ram 2500 5.9 Liter NV4500HD, 1999-2005 Dodge Ram 2500 5.9 Liter NV5600, 1999-2002 Dodge Ram 2500 Base 5.9 Liter 46RE, 1999-2002 Dodge Ram 2500 Base 5.9 Liter 46RE, 1999-2002 Dodge Ram 2500 Base 5.9 Liter 47RE, 1999-2002 Dodge Ram 2500 Base 5.9 Liter 47RE, 1999-2002 Dodge Ram 2500 Base 5.9 Liter NV4500, 1999-2002 Dodge Ram 2500 Base 5.9 Liter NV4500, 1999-2002 Dodge Ram 2500 Base 5.9 Liter NV4500HD, 1999-2002 Dodge Ram 2500 Base 5.9 Liter NV4500HD, 1999-2002 Dodge Ram 2500 Base 5.9 Liter NV5600, 1999-2002 Dodge Ram 2500 Base 5.9 Liter NV5600, 2005-2007 Dodge Ram 2500 Laramie 5.9 Liter 48RE, 2005-2007 Dodge Ram 2500 Laramie 5.9 Liter 545RFE, 2007 Dodge Ram 2500 Laramie 5.9 Liter 68RFE, 2005-2007 Dodge Ram 2500 Laramie 5.9 Liter G56 ...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
- Brand
- Mishimoto
- Part number
- MMTS-RAM-99L
- SKU
- MISMMTS-RAM-99L
- UPC
- 748354013146
- Category
- Thermostats
- Engine
- 5.9L / 6.7L Cummins
- Weight
- 0.25 lb
- Shipping
- Ground, ships in 1 to 2 business days
- 1999–2010Dodge Ram 2500
- 1999–2010Dodge Ram 3500
- 2011–2013Ram 2500
Engine: 5.9L / 6.7L Cummins
| Years | Make | Model | Submodel |
|---|---|---|---|
| 1999–2002 | Dodge | Ram 2500 | Base |
| 2003 | Dodge | Ram 2500 | Laramie |
| 2005–2010 | Dodge | Ram 2500 | Laramie |
| 2006–2010 | Dodge | Ram 2500 | Power Wagon |
| 2003–2010 | Dodge | Ram 2500 | SLT |
| 2006–2007 | Dodge | Ram 2500 | Sport |
| 2003–2010 | Dodge | Ram 2500 | ST |
| 2008–2010 | Dodge | Ram 2500 | 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 |
| 2010 | Dodge | Ram 2500 | TRX |
| 2006–2007 | Dodge | Ram 2500 | TRX4 |
| 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 |
| 2013 | Ram | 2500 | Tradesman |
Applications are the manufacturer's published fitment for this part number.
Not sure it fits? Call 908-223-9744 or text us the year, model and engine. We confirm fitment before you order.
- Shipping
- In-stock parts ship in 1 to 2 business days. Tracking is emailed as soon as the label prints.
- Returns
- 30-day returns on unused parts in the original packaging. Return policy.
- Warning
- This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Reviews
What customers say
Verified reviews collected by Loox from real orders.
Good to know
Questions, answered straight.
If it is not here, call or text the counter. Real people, real answers.
Fitment
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Will this fit my truck?
The Fits section at the top of the page lists the manufacturer's applications for this exact part. If your year, make and model is not there, or you are not sure, text us a photo of what you are replacing with your year and engine and we will confirm it before you order.
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What if I order the wrong part?
Call or text us before it ships and we will swap it. After delivery you have 30 days to return it in new, uninstalled condition. The return policy has the restocking details.
Shipping
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When will it ship?
In-stock parts usually ship within 1 to 2 business days from warehouses across the USA. The stock line under the options tells you the status of the part you are looking at. Large items ship LTL freight and we call to schedule delivery.
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Why did I only get part of my order?
We ship from multiple warehouses, so an order with several items can arrive in more than one box. Tracking for each shipment is emailed as it goes out. Full details in the shipping policy.
Returns and warranty
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What is the return policy?
30 days from delivery, in new and uninstalled condition, with a restocking fee. Everything is spelled out in the Returns & Refund Policy.
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How do warranty claims work?
We are an authorized dealer, so the manufacturer's warranty applies to every part we sell. Call or text us with your order number and we handle the claim with the brand for you.
Paying
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Can I pay over time?
Yes. Shop Pay installments are offered at checkout on qualifying orders, and the monthly estimate shows right under the price.
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What is a core deposit?
Some remanufactured parts, like injectors and turbos, carry a refundable core deposit. It is shown on the product page when it applies and refunded when your old part comes back to us.
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Why buy here
A diesel shop that sells parts, not a website that sells boxes.
Every part on this site is one our own techs can stand behind.
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We run what we sell
A working diesel repair and fabrication shop in Nazareth, PA. These are the parts our techs install every week.
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Real techs on the phone
Call or text 908-223-9744 and you get a diesel tech, not a script.
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Authorized dealer
Genuine parts straight from the manufacturer, with the factory warranty behind them.
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Fast from stock
Most in-stock parts ship in 1 to 2 business days from warehouses across the USA.
Authorized dealer for 140+ brands
All brands- 7+ Years in business
- 6+ Shop technicians
- 30,000+ In-stock SKUs
- 25+ Trucks given away
The shop floor, Nazareth, PAFull Send Diesel, Nazareth, PA
A team of diesel people, not a call center.
Full Send Diesel is a shop full of techs, builders and parts people in Nazareth, Pennsylvania. When you call or text, you reach someone who works on these trucks and knows the parts.
Not sure what you need? Send a photo of what you are replacing with your year and engine. We will point you to the right part, confirm it is in stock, and get it moving.
Mon–Fri, 8am–4pm ET. After hours, text or email and we answer first thing in the morning.
































