Mishimoto MMTS-MOP-18E Thermostat with Aluminum Housing for Jeep Wrangler JL and Gladiator 3.6L

Don't let a weak thermostat housing bring your adventure to a halt. The Mishimoto Thermostat with Housing for the 2018+ Jeep and Ram 3.6L Pentastar replaces the fragile factory plastic housing with a durable cast aluminum unit, eliminating a common source of leaks and overheating.--This thermostat is calibrated to match factory specifications, opening at 195F to ensure your engine runs at the correct operating temperature. By maintaining OEM temperature control, it delivers reliable cooling performance without compromising drivability, fuel economy, or emissions. Whether you're daily driving, towing, or exploring trails, this thermostat keeps your Pentastar-powered vehicle performing exactly as intended.--Engineered with premium wax for precise and consistent operation, the Mishimoto thermostat is built for long-lasting dependability. Like all Mishimoto products, it is backed by our Mishimoto Lifetime Warranty for total peace of mind. Engine coolant thermostat designed to regulate coolant flow and maintain optimal operating temperature. Ensures efficient warm-up, prevents overheating, and supports reliable performance with a precise fit.

• Designed to match OEM specification and open at 195F for effective cooling
• Replaces failure-prone plastic housing with durable aluminum
• Eliminates potential leak points found in stock unit

The Mishimoto MMTS-MOP-18E thermostat with aluminum housing is designed for Jeep Wrangler JL and Jeep Gladiator models equipped with the 3.6L Pentastar engine. It replaces the failure-prone factory plastic thermostat housing with a durable cast aluminum construction, helping eliminate a common source of coolant leaks and overheating. This direct-fit thermostat assembly supports dependable cooling performance for daily driving, towing, and off-road use.
Calibrated to open at 195°F, the thermostat matches factory operating specifications to help maintain proper engine temperature, efficient warm-up, and consistent coolant flow. Precise temperature control supports reliable drivability, fuel economy, and emissions performance while helping protect the engine from overheating. The assembly is engineered for a secure fit and straightforward installation using the original mounting location.
The Mishimoto thermostat uses premium wax for accurate, consistent operation over the life of the component. Its robust aluminum housing provides improved durability compared with the original plastic unit and reduces potential leak points in the cooling system. The MMTS-MOP-18E is backed by the Mishimoto Lifetime Warranty, providing long-term confidence in your Jeep’s cooling system performance.

Features:

• Designed to match OEM specifications and open at 195°F for effective cooling

• Replaces the failure-prone factory plastic thermostat housing with durable cast aluminum

• Helps eliminate potential leak points found in the stock housing

• Premium wax element provides precise and consistent thermostat operation

• Direct-fit design for compatible Jeep 3.6L Pentastar applications

• Backed by the Mishimoto Lifetime Warranty

Compatible With
2016 Dodge Durango
2016 Jeep Grand Cherokee
2017 Dodge Durango
2017 Jeep Grand Cherokee
2018 Dodge Durango
2018 Jeep Grand Cherokee
2018 Jeep Wrangler
2019 Dodge Durango
2019 Jeep Grand Cherokee
2019 Jeep Wrangler
2019 Ram 1500
2020 Dodge Durango
2020 Jeep Gladiator
2020 Jeep Grand Cherokee
2020 Jeep Wrangler
2020 Ram 1500
2021 Dodge Durango
2021 Jeep Grand Cherokee
2021 Jeep Wrangler
2021 Ram 1500
2022 Jeep Gladiator
2022 Jeep Grand Cherokee WK
2022 Jeep Wrangler
2022 Ram 1500
2023 Dodge Durango
2023 Jeep Gladiator
2023 Jeep Wrangler
2023 Ram 1500
2024 Dodge Durango
2024 Jeep Gladiator
2024 Jeep Wrangler
2024 Ram 1500
2025 Dodge Durango
2025 Jeep Gladiator
2025 Jeep Wrangler
2025 Ram 1500
2026 Ram 1500