Mishimoto
0 ratings
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
genuine image
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Improve the reliability of your 5.9L/6.7L cooling system with a Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat!
Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013
Item #: 1254710

Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat Fits Dodge 5.9L 6.7L Cummins 1999-2013

77% of respondents would recommend this to a friend

Item #: 1254710

ETB 14467

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

0 ratings Write a review
In stock
us Imported from USA store

QTY:

Only 1 item left in stock.
Order now and get it around Tuesday, September 22
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Improve the reliability of your 5.9L/6.7L cooling system with a Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat!
Please enter vehicle details

U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

High-Temperature Rating
Designed for optimal performance, this racing thermostat operates at higher temperatures, improving engine efficiency during extreme conditions, preventing overheating, and ensuring better power delivery in high-performance Dodge Cummins engines.
Precision Fitment
Engineered specifically for Dodge 5.9L and 6.7L Cummins models from 1999-2013, ensuring a perfect fit and hassle-free installation, eliminating compatibility issues commonly found with generic thermostats.
Durable Construction
Crafted from high-quality materials for enhanced longevity and reliability, this thermostat withstands racing environments, giving you peace of mind and consistent performance whether on the road or track.

Product Details

Improve the reliability of your 5.9L/6.7L cooling system with a Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat. Direct-fit replacement with a higher activation temperature for quicker engine warm-up. Explore now at Ubuy Ethiopia, a Ethiopia.
Controller TypeMechanical knob
Additional FeaturesDimmable
Specific Uses For Productcold climates, improving the reliability of the cooling system in Dodge Ram vehicles with 5.9L/6.7L Cummins engines from 1999 to 2013
Temperature Control Typethermostatic
Display Typedigital
Control TypeTouch Control
Control MethodTouch
Mounting TypeWall Mount
ColorSilver
Product StyleModern
Item Weight3.2 ounces (90.72 grams)
Material TypeAluminum
Finish TypesSilver or Brushed
Specification MetMeets or Exceeds OEM Specification
Brand NameMishimoto
Model NameMMTS-RAM-99H
Included ComponentsPer Item Description
Model NumberMMTS-RAM-99H
UPC748354013139
Global Trade Identification Number00748354013139
ManufacturerMishimoto
Number of Items1
Unit Count1 Count
Part Interchange InfoMMTS-RAM-99H
Manufacturer Part NumberMMTS-RAM-99H
BrandMishimoto
Special FeatureDimmable

What's in the box

Per Item Description

Who Should Buy?

Suitable For
  • Racing Enthusiasts

    Ideal for racing applications needing enhanced cooling for optimal engine performance under high-stress conditions.

  • Off-Road Drivers

    Perfect for off-road users who require reliable cooling solutions while tackling extreme terrains and heat.

  • High Performance Builds

    Beneficial for modified engines demanding improved cooling efficiency to prevent overheating during heavy use.

Not Suitable For
  • Casual Drivers

    Not suitable for everyday driving situations that do not require advanced cooling solutions.

Product Description

About This Item

Upgrade your Dodge 5.9L/6.7L Cummins cooling system with the Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat. Engine overheating can lead to costly repairs and potential internal damage, so it's crucial to have a reliable thermostat in place. This high-quality thermostat is designed as a direct-fit replacement for your factory unit.

With a higher activation temperature of 205 degrees Fahrenheit, compared to the 190 degrees Fahrenheit of the factory thermostat (for 99-10 and 2013 trucks) and 200 degrees Fahrenheit (for 10-12 trucks), it allows for a longer coolant flow restriction for a quicker engine warm-up. This feature makes it an excellent choice for cold climates. Mishimoto is known for its superior product quality and craftsmanship, and the Mishimoto MMTS-RAM-99H is no exception. It is specifically designed for use with Dodge 5.9L/6.7L Cummins engines, ensuring a perfect fit and optimal performance. Whether you're looking for a racing thermostat or a high-temperature thermostat for your Dodge Cummins, the Mishimoto MMTS-RAM-99H ticks all the boxes.

It provides improved cooling system performance and helps prevent engine overheating and potential damage. Upgrade your Dodge 5.9L/6.7L Cummins cooling system today with the Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat and enjoy peace of mind knowing your engine is protected.

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the Mishimoto MMTS-RAM-99H thermostat?

    Answer: The Mishimoto MMTS-RAM-99H thermostat is designed to improve engine cooling efficiency in Dodge 5.9L and 6.7L Cummins engines from 1999 to 2013. This high-temperature racing thermostat opens at a higher temperature, allowing the engine to reach optimal operating temperatures quicker. By maintaining a consistent temperature, the engine performs better under heavy loads and high-performance conditions, which is crucial for racing and towing scenarios.
  • Question: Is the Mishimoto racing thermostat compatible with my vehicle?

    Answer: Yes, the Mishimoto MMTS-RAM-99H is specifically engineered to be compatible with Dodge 5.9L and 6.7L Cummins engines produced between 1999 and 2013. It is essential to check your specific model and engine type to ensure the correct fit. This compatibility ensures that the thermostat will work seamlessly with your vehicle's cooling system, enhancing overall performance and reliability.
  • Question: How does this thermostat improve performance over stock options?

    Answer: The Mishimoto MMTS-RAM-99H racing thermostat opens at a higher temperature compared to stock options, allowing for improved thermal management. This design minimizes engine temperature fluctuations, which can be detrimental during competitive driving or when towing. The result is a more stable engine temperature that optimizes performance and extends engine longevity. This is particularly beneficial in demanding applications where consistent thermal regulation is critical.
  • Question: Do I need to modify my vehicle to install this thermostat?

    Answer: Generally, the installation of the Mishimoto MMTS-RAM-99H thermostat does not require significant modifications to your Dodge Cummins. It is designed to fit in the stock housing and uses the existing hoses and fittings as intended. However, having basic mechanical skills and tools is recommended, as well as referring to the installation instructions provided. This way, you can ensure that the installation process goes smoothly and the thermostat functions correctly.
  • Question: What are the benefits of using a high-temperature thermostat?

    Answer: Using a high-temperature thermostat like the Mishimoto MMTS-RAM-99H helps maintain higher engine temperatures, which promotes better combustion efficiency and reduces emissions. Additionally, it can enhance engine responsiveness and power performance, particularly under heavy loads or high RPMs. This thermostat is ideal for performance enthusiasts looking to maximize the effectiveness of their engine cooling system while engaging in racing or towing activities.
  • Question: How can I ensure the thermostat is functioning properly?

    Answer: To verify that the Mishimoto MMTS-RAM-99H thermostat is operational, monitor your engine temperature gauge during use. If the engine tends to overheat or does not reach optimal temperatures, it may indicate a faulty thermostat. Regular check-ups and observing unusual temperature fluctuations can help catch issues early. This proactive monitoring is crucial for performance vehicles that experience significant temperature changes during operation.
  • Question: Can I install this thermostat myself or should I get professional help?

    Answer: The installation of the Mishimoto MMTS-RAM-99H thermostat is manageable for those with basic mechanical knowledge and tools. Many car enthusiasts choose to undertake the installation themselves, following the detailed instructions provided. However, if you're uncertain about any steps, seeking professional assistance can ensure a correct installation, leading to improved vehicle performance and longevity. It’s always better to err on the side of caution.
  • Question: What materials is this thermostat made from?

    Answer: The Mishimoto MMTS-RAM-99H thermostat is constructed from high-quality materials designed to withstand high temperatures and rigorous conditions. Typically, the core consists of a durable metal alloy that ensures reliability during operation. This construction not only promotes longevity but also improves resistance to wear and tear in extreme driving conditions, making it suitable for racing and heavy-duty applications.
  • Question: Will this thermostat improve fuel efficiency?

    Answer: Yes, by maintaining an optimal engine temperature, the Mishimoto MMTS-RAM-99H thermostat can contribute to enhanced fuel efficiency. When the engine operates within its ideal temperature range, it engages in better combustion, using fuel more effectively. This is especially beneficial for drivers who often push their vehicles under heavy loads or in performance scenarios, where efficient fuel use is crucial for maximizing performance and minimizing costs.
  • Question: Where can I buy Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat in Ethiopia?

    Answer: You can conveniently purchase the Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat compatible with Dodge 5.9L and 6.7L Cummins models at Ubuy. They offer a straightforward online shopping experience, along with reliable customer service and a secure payment process, making it easy to get this performance upgrade for your vehicle.

Mishimoto Thermostats MMTS-RAM-99H Editorial Review

The Mishimoto MMTS-RAM-99H High-Temperature Racing Thermostat has mixed reviews from customers. Some users have reported that it failed shortly after installation, causing their vehicle's temperature to drop significantly during operation. Others have praised its performance in maintaining consistent temperature levels, particularly in cold conditions. However, there are concerns about the quality and design of the thermostat, with reports of components coming loose or failing within a short time. The warranty offered by Mishimoto is also not satisfactory to some customers. Overall, the product receives mixed feedback, with some customers experiencing issues and recommending purchasing an OEM thermostat as an alternative.

Customer Reviews & Ratings

19 customers ratings
  • 5 Star
    54%
  • 4 Star
    8%
  • 3 Star
    14%
  • 2 Star
    7%
  • 1 Star
    17%

Review this product

Share your thoughts with other customers

Pros

  • Can hold consistent temperature in cold conditions
  • Easy installation

Cons

  • Frequent reports of failure shortly after installation

Platform Trust & Buyer Confidence

trustpilot logo
4.2/5 9477 reviews
Read reviews
JK
Jasmin
Verified buyer

“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
AG
Anke
Verified buyer

“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
H
Hazel
Verified buyer

“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer

“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
AC
Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Product Price History

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

ETB 14467

Order now and get it around Tuesday, September 22

QTY:

Only 1 item left in stock.
Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.