Fits select 1984-2003 Nissan, Infiniti, and Mercury vehicles including 300ZX, Maxima, Pathfinder, Frontier, and Xterra (3.0L / 3.3L engines).

The Mishimoto Racing Thermostat (MMTS-RB-ALLL) is engineered to promote cooling efficiency by significantly reducing high engine temperatures. Once the engine is fully warmed up, this thermostat opens at a lower temperature (155°F / 68°C) compared to standard OEM thermostats. This allows coolant to flow through the system earlier, helping to maintain cooler operating temperatures and preventing overheating during high-performance use or heavy-load conditions.

• Activation Temperature: 155°F (68°C)
• Design: High-quality replacement for factory units, maintaining tight tolerances for reliable operation.
• Fitment: Direct-fit for VG30 and VG33 based cooling systems.
• Warranty: Mishimoto Lifetime Warranty.
• Manufacturer Part Number: MMTS-RB-ALLL

Fits select 1999-2013 Dodge and Ram 2500/3500 trucks (5.9L / 6.7L Cummins).

The Mishimoto Low-Temperature Thermostat provides a proactive approach to cooling for your Cummins-powered Dodge or Ram truck. Designed to activate at a lower temperature than the factory unit, this thermostat allows coolant to circulate through the radiator earlier. This prevents the engine from reaching higher peak temperatures, which is especially critical when towing heavy loads or operating in hot climates.

This component serves as a direct-fit replacement for the OEM unit, ensuring a clean installation into the factory housing. By maintaining lower overall engine temperatures, it helps reduce the risk of heat-related component wear and improves thermal efficiency during high-demand operation.

• Lower activation temperature allows for earlier coolant flow through the system
• Maintains cooler engine temperatures under high-load or high-ambient conditions
• Direct-fit replacement for factory thermostat
• Ideal for heavy towing, hauling, and warm climate operation
• Manufacturer Part Number: MMTS-RAM-99L

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

Fits 1994-1998 Dodge Ram 2500 and 3500 (5.9L).

The Mishimoto Low-Temperature Thermostat is engineered to improve cooling efficiency by activating at a lower temperature than standard factory units. By opening earlier, this thermostat allows coolant to flow through the radiator sooner, effectively reducing and maintaining lower engine temperatures. This is a critical upgrade for vehicles operating in warm climates or those under heavy load conditions, such as towing or hauling.

• Promotes cooler engine operating temperatures
• Ideal for high-heat environments and heavy-duty applications
• Allows coolant to circulate earlier in the combustion cycle
• Direct fit for 5.9L Dodge Ram applications
• Manufacturer Part Number: MMTS-RAM-94L

Fits 1994-1998 Dodge Ram 2500 and 3500 (5.9L).

Designed specifically for colder climates and winter driving, the Mishimoto High-Temperature Thermostat allows for quicker engine warm-up times. By restricting coolant circulation for a longer duration before reaching operating temperature, this unit ensures your engine reaches its optimal heat range faster, improving cabin heater performance and overall engine efficiency in freezing conditions.

• Direct fit for 1994-1998 Dodge Ram 2500/3500 5.9L models
• High-temperature rating ideal for cold-weather operation
• Promotes faster engine warm-up and improved heater output
• Mishimoto Lifetime Warranty included
• Manufacturer Part Number: MMTS-RAM-94H

Fits select 2002-2013 Nissan Altima, Sentra, Frontier, and Rogue models equipped with the 2.5L engine.

Protect your engine from overheating and thermal stress with the Mishimoto Racing Thermostat. Designed for high-performance driving and demanding conditions, this thermostat facilitates greater cooling efficiency by significantly reducing engine temperatures. While the factory thermostat is calibrated to open at 205°F (96.1°C), the Mishimoto unit activates at just 177°F (80.5°C).

By opening at a lower temperature, this thermostat allows coolant to flow through the system earlier, helping maintain a more consistent and lower operating temperature. This is a direct-fit replacement for the OE unit and is ideal for vehicles used in heavy traffic, autocross, or high-load environments. Like all Mishimoto products, this thermostat is backed by a lifetime warranty for long-term reliability.

• Manufacturer Part Number: MMTS-NIS-02L
• Activation Temperature: 177°F (80.5°C)
• OEM Activation Temperature: 205°F (96.1°C)
• Promotes earlier coolant flow to maintain lower engine temperatures
• Direct-fit for the 2.5L engine applications listed below
• Mishimoto Lifetime Warranty included

Fits select 1993-2011 Chrysler, Dodge, Jeep, Eagle, Mitsubishi, and Mini models including Neon, Sebring, Caravan, and Liberty (refer to the fitment table for specific engine compatibility).

The Mishimoto 70 Degree Racing Thermostat is engineered to promote cooling efficiency by significantly decreasing high engine temperatures. Designed as a direct-fit replacement for the factory unit, this racing thermostat activates at a lower temperature (70°C / 158°F) than standard thermostats. This allows coolant to flow through the engine earlier, maintaining lower operating temperatures and protecting your engine during high-performance driving or in hot climates.

• Lower activation temperature allows for earlier coolant flow through the system
• Effectively reduces and maintains lower engine temperatures
• Ideal for modified vehicles or high-performance racing applications
• Opening Temperature: 70°C (158°F)
• Manufacturer Part Number: MMTS-NEO-97L

Fits select 2011-2021 Ford and Lincoln vehicles, including Mustang, F-150, Edge, Explorer, Expedition, Fusion, and Transit series.

The Mishimoto 160 Degree Racing Thermostat (MMTS-MUS8-11) is engineered to provide superior cooling efficiency for high-performance and modified engines. By activating at a significantly lower temperature than the standard 190°F factory unit, this thermostat allows coolant to circulate through the block earlier. This proactive heat management helps prevent heat soak and maintains lower overall operating temperatures, which is critical during spirited driving or towing applications.

• Direct-fit replacement for the factory thermostat
• Lower activation temperature: 160°F (71°C) vs. OEM 190°F (88°C)
• Maintains optimal engine temperatures under high-load conditions
• High-quality construction for reliable operation and consistent flow
• Manufacturer Part Number: MMTS-MUS8-11
• Mishimoto Lifetime Warranty included

Keep your engine running at optimal temperatures with the Mishimoto 68°C Racing Thermostat (MPN: MMTS-MUS-86). This performance thermostat is engineered to activate at a lower temperature than factory units, allowing coolant to flow through the system earlier. By initiating cooling sooner, it maintains lower overall engine temperatures and helps prevent overheating during high-stress driving or in high-performance applications.

Fits select 1980-2007 Ford and Mercury vehicles, including Mustang, F-150, Bronco, Econoline, and Capri (V8 models).

• Lower activation temperature for earlier coolant circulation
• Promotes cooler engine temperatures and improved cooling efficiency
• Direct-fit replacement for standard factory thermostats
• Activation Temperature: 68°C (154.4°F)
• Manufacturer Part Number: MMTS-MUS-86
• Fits select Ford Mustang 1986-1995 (Excludes Cobra models)

Fits select 1996-2013 Ford, Lincoln, and Mercury vehicles (3.0L).

The Mishimoto 160 Degree Street Thermostat is designed to reduce engine operating temperatures by activating at a significantly lower threshold than factory units. By opening earlier, this thermostat allows coolant to flow through the system sooner, promoting enhanced cooling efficiency and helping to maintain optimal temperatures during spirited driving or heavy load conditions.

This performance thermostat is a direct-fit replacement, ensuring a straightforward installation into the factory housing without the need for modifications.

• Activation Temperature: 160°F (approx. 71°C)
• Earlier coolant flow for improved thermal management
• Ideal for street and performance applications
• Direct replacement for the OEM unit
• Manufacturer Part Number: MMTS-MUS-05L

Fits 1995 Mazda Protege and 1999-2005 Mazda Miata NB models (1.8L).

The Mishimoto MMTS-MIA-99 Racing Thermostat is designed to improve cooling efficiency in both naturally aspirated and forced induction Mazda engines. By opening at a lower temperature than the factory unit, this thermostat allows coolant to circulate through the engine and radiator earlier, helping to mitigate heat soak and maintain more consistent operating temperatures during spirited driving or track sessions.

This thermostat is a direct-fit replacement for the stock unit, requiring no modifications for installation. It is specifically calibrated to activate at 177°F (80.5°C) compared to the standard 195°F (90.5°C) OEM activation point. Like all Mishimoto cooling components, this thermostat is backed by the Mishimoto Lifetime Warranty for long-term reliability.

• Direct replacement for the factory thermostat
• Activation Temperature: 177°F (80.5°C) vs. Stock 195°F (90.5°C)
• Promotes earlier coolant flow to maintain lower engine temperatures
• Includes Mishimoto Lifetime Warranty
• Manufacturer Part Number: MMTS-MIA-99

Fits select 1986-2002 Kia and Mazda models, including the Miata, 323, 626, B2600, MX-3, and Sportage. This Mishimoto Racing Thermostat is designed to significantly improve cooling efficiency by reducing engine temperatures in high-load and competition environments.

Unlike standard units that open at a higher factory temperature, this Mishimoto thermostat activates at 155°F (68°C). By allowing coolant to flow through the engine earlier, it helps prevent heat soak and maintains a more consistent operating temperature, which is critical for modified engines or track-day use. Each unit is a direct-fit replacement for the OE thermostat, ensuring a trouble-free installation into the factory housing.

• Manufacturer Part Number: MMTS-MIA-90L
• Opening Temperature: 155°F (68°C)
• Material: High-grade wax pellet for reliable activation
• Fitment: Direct replacement for select Mazda and Kia applications

Fits select 2007-2015 Mercedes-Benz C63, CL63, CLK63, CLS63, E63, ML63, R63, S63, SL63, and SLS AMG models.

The Mishimoto MMTS-MB62-08L Racing Thermostat is engineered to provide superior cooling efficiency for high-performance Mercedes-Benz AMG engines. By activating at a significantly lower temperature than the factory unit, this thermostat allows coolant to flow through the engine earlier, helping to maintain lower overall operating temperatures and prevent overheating during spirited driving or track use. While the stock thermostat is set to open at 212°F (100°C), the Mishimoto racing version opens at 180°F (82°C), proactively managing thermal loads before they impact performance.

• Direct-fit replacement for the factory thermostat
• Activates at 180°F (82°C) compared to the 212°F (100°C) OEM temperature
• Allows coolant to circulate earlier to maintain lower engine temperatures
• Ideal for modified, high-horsepower, or track-driven vehicles
• Mishimoto Lifetime Warranty
• Manufacturer Part Number: MMTS-MB62-08L

Fits select 2003-2011 Mercedes-Benz C55, CLS55, E55, G55, S55, and SL55 AMG (5.4L).

Improve the cooling efficiency of your M113 5.4L Supercharged engine with the Mishimoto racing thermostat. Designed as a direct-fit replacement for the factory unit, this thermostat activates at 180°F (82.2°C) compared to the standard 188.6°F (87°C) OEM temperature. By opening earlier, it allows coolant to circulate through the block sooner, helping to maintain lower overall operating temperatures and combat heat soak during spirited street driving or track sessions.

• Lower activation temperature of 180°F vs. stock 188.6°F
• Promotes greater cooling efficiency for stock or modified M113 engines
• Direct-fit replacement for the factory thermostat
• Manufacturer Part Number: MMTS-MB55-03L
• Includes the Mishimoto Lifetime Warranty

Fits select 2004-2018 Mazda (3, 5, Miata), Ford (Focus, Fusion, Escape, Explorer, Taurus), and Lincoln (MKC, MKT, MKZ) models.

The Mishimoto MMTS-MAZ-04 racing thermostat is engineered to improve cooling efficiency by significantly lowering the activation temperature of your vehicle's cooling system. While the stock thermostat waits for higher temperatures to engage, this Mishimoto unit begins opening at 68°C (154.4°F), which is 14°C (25.2°F) earlier than the factory equipment. This allows coolant to circulate through the radiator sooner, helping to maintain lower overall engine temperatures during high-load driving or track sessions.

This kit includes an OEM-quality thermostat housing to ensure a precise, leak-free fit and simplifies the installation process. Like all Mishimoto thermostats, this part is backed by a Lifetime Warranty, providing long-term reliability for your performance cooling setup.

• Activation Temperature: 68°C (154.4°F)
• Temperature Delta: Opens 14°C (25.2°F) earlier than stock
• Construction: Includes OEM-quality thermostat housing and gasket
• Manufacturer Part Number: MMTS-MAZ-04
• Warranty: Mishimoto Lifetime Warranty

Fits select 2006-2018 Lexus GS300, GS350, GS450h, IS250, IS300, IS350, RC300, and RC350.

The Mishimoto Racing Thermostat is engineered to help your Lexus cooling system maintain lower operating temperatures, whether you are dealing with high-performance track sessions or demanding street driving. This thermostat begins to open at 154.4°F (68°C), which is 25.2°F (14°C) earlier than the factory thermostat. By initiating coolant flow to the radiator sooner, the system can begin shedding heat earlier to prevent overheating under load.

This unit comes pre-assembled with an OEM-quality thermostat housing to ensure a direct-fit, leak-free installation onto factory mounting points. Like all Mishimoto thermostats, this component is built to exacting standards for long-term reliability and cooling efficiency.

• Manufacturer Part Number: MMTS-LEX-06
• Activation Temperature: 154.4°F (68°C)
• Temperature Delta: Opens 25.2°F (14°C) earlier than OEM
• Construction: High-quality thermostat with integrated housing
• Warranty: Mishimoto Lifetime Warranty

Fits select 1999-2012 Dodge, Chrysler, Jeep, and Mitsubishi vehicles, including Ram 1500, Dakota, Durango, Grand Cherokee, and Liberty (3.7L / 4.7L).

The Mishimoto MMTS-JGC-99L Racing Thermostat is a performance cooling upgrade designed to manage engine temperatures more effectively than the factory unit. By activating at a lower temperature, this thermostat allows coolant to flow through the system earlier, helping to maintain a cooler engine and prevent overheating during high-stress driving or in hot climates.

• Direct-fit replacement for factory thermostats in 3.7L and 4.7L engines
• Activates at a lower temperature to initiate cooling system flow sooner
• Promotes lower overall operating temperatures for improved thermal management
• Compatible with a wide range of Dodge Ram, Jeep Grand Cherokee, and Chrysler models
• Manufacturer Part Number: MMTS-JGC-99L

Fits select 2003-2025 Chrysler 300/Aspen, Dodge Challenger/Charger/Durango/Magnum/Ram, and Jeep Commander/Grand Cherokee (5.7L / 6.1L / 6.4L Hemi).

The Mishimoto Racing Thermostat is engineered to improve cooling efficiency by activating at a lower temperature than the factory unit. This earlier opening allows coolant to circulate through the radiator sooner, effectively lowering overall engine temperatures and reducing heat soak during high-performance driving, towing, or extreme weather conditions. As a direct replacement for the OE thermostat, it provides a precise fit and reliable operation within the factory cooling system.

• Lower activation temperature for earlier coolant flow
• Reduces engine temperatures and minimizes heat soak
• Compatible with 5.7L, 6.1L, and 6.4L Hemi engines
• Direct-fit replacement for factory thermostat
• Ideal for street, track, or high-load applications
• Manufacturer Part Number: MMTS-JED-06L