Mishimoto Racing Thermostat for Dodge Charger & Challenger HEMI 180°F Opening — Direct-Fit 2006-2019

The Mishimoto MMTS-JED-06L Racing Thermostat is a direct-fit replacement for 5.7L, 6.1L, and 6.4L HEMI Dodge Charger and Challenger engines that opens at 180°F to improve coolant flow and lower operating temperatures.

Designed specifically for modern HEMI applications, this racing thermostat reduces the factory opening temperature to encourage earlier coolant circulation. That helps control peak operating heat during spirited driving, towing, or track use, while remaining a bolt-in swap for 2006–2019 Chargers and Challengers. Built with high-quality materials and digital calibration, it balances performance cooling with long-term reliability.

How does this thermostat change engine temperature management?

By opening at 180°F (82°C) instead of the stock 203°F (95°C), the MMTS-JED-06L lets coolant begin flowing through the radiator sooner. Earlier coolant flow reduces steady-state temperatures and shortens heat soak duration after hard runs. The result is a lower, more consistent operating range under increased thermal load.

• Opens at 180°F (82°C) versus OEM 203°F (95°C)
• Reduces peak and sustained engine temperatures
• Minimizes post-run heat soak

Will it fit my Dodge Charger or Challenger and require modifications?

The MMTS-JED-06L is engineered as a direct-fit replacement for 2006–2019 Dodge Charger and Challenger HEMI engines (5.7L, 6.1L, 6.4L). Installation follows the factory thermostat removal and uses the same housing locations and seals, so no custom fabrication is required. It’s suitable for stock, cammed, or forced-induction setups when paired with appropriate cooling system components.

• Direct-fit for 2006–2019 HEMI 5.7L, 6.1L, 6.4L engines
• No housing modifications or plumbing changes needed
• Compatible with naturally aspirated and boosted systems

What materials and engineering features ensure durability?

Mishimoto builds this thermostat using corrosion-resistant components and precision calibration to maintain consistent opening temperature over time. The unit is digitally tested for repeatable actuation and constructed to withstand the thermal cycling common in performance driving. Those production standards help deliver reliable service life when compared to lower-grade aftermarket parts.

• Corrosion-resistant construction for long-term reliability
• Digitally calibrated for repeatable opening temperature
• Manufactured to tolerate frequent thermal cycling

How will this thermostat affect everyday driving and spirited use?

On daily drives the thermostat quietly manages coolant flow without altering drivability or cabin comfort. Under spirited driving, towing, or track sessions you should notice lower engine temps and reduced thermal strain, which can help sustain performance. The thermostat works as part of an overall cooling strategy — pairing it with a healthy radiator, hoses, and coolant maximizes results.

• No adverse effect on normal driveability or heater function
• Improves thermal control during high-load driving
• Performs best alongside a well-maintained cooling system

Who is this for? The Mishimoto MMTS-JED-06L Racing Thermostat suits HEMI owners who want improved thermal management without modifying stock components. It’s a smart upgrade for enthusiasts who track, tow, or run aggressive driving schedules and for builders installing cams or forced induction who need better temperature control. If you want a direct-fit, precision-calibrated thermostat that lowers operating temperature while preserving reliability, this unit is a practical performance upgrade.