MMTS-RAM-99H Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat
MMTS-RAM-99H Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat
Available in stock (14)
MMTS-RAM-99H Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat
Upgrade your Dodge 5.9L/6.7L Cummins engine cooling system with the Mishimoto High-Temperature Thermostat. Designed to combat the common issues associated with aging factory thermostats, this innovative product significantly enhances engine reliability and performance.
Key Features:
- Direct-Fit Replacement: Seamlessly replaces your old thermostat without requiring any modifications.
- High Activation Temperature: Activates at 205 degrees Fahrenheit, compared to the factory settings of 190F (99-10 & 2013 trucks) and 200F (10-12 trucks).
- Improved Coolant Flow Management: Restricts coolant flow longer to facilitate quicker engine warm-up, making it ideal for cold climates.
- Durable Construction: Built to withstand high temperatures and pressures, ensuring longevity and reliability.
- Mishimoto Lifetime Warranty: Enjoy peace of mind with a warranty that guarantees superior product quality and craftsmanship.
Benefits:
- Prevents Engine Overheating: A reliable thermostat helps avoid costly internal engine damage.
- Optimizes Engine Performance: Maintain optimal operating temperatures for improved fuel efficiency and power.
- Easy Installation: Designed for a hassle-free installation process, allowing you to get back on the road quickly.
Use Cases:
This thermostat is perfect for:
- Dodge Ram 1500 Laramie (1999-2001)
- Dodge Ram 1500 SLT (2002-2003)
- Dodge Ram 1500 Sport (1999-2001)
- And many more models – see the application guide for additional fitments!
Elevate your engine's cooling system with the Mishimoto Dodge 5.9L/6.7L Cummins High-Temperature Thermostat and enjoy a more dependable driving experience!
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Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

