Mopar 180 Degree Thermostat for 5.7L, 6.1L, 6.2L & 6.4L HEMI Engines

The Mopar 180 Degree Thermostat is a popular cooling system upgrade for enthusiasts looking to improve temperature management in their 5.7L, 6.1L, 6.2L, or 6.4L Gen 3 HEMI-powered vehicle. Engineered by Mopar to meet factory standards for fitment and reliability, this thermostat begins opening at a lower temperature than many OE applications, helping coolant circulate sooner to better control engine temperatures during spirited driving, towing, racing, and hot weather conditions. Whether you’re driving a naturally aspirated 392 Scat Pack, a supercharged Hellcat, a Jeep Trackhawk, or a Ram TRX, maintaining stable engine temperatures can contribute to more consistent performance and improved drivability. For modified vehicles equipped with custom tuning, pulley upgrades, camshafts, or forced induction enhancements, a lower-temperature thermostat is often recommended to complement other supporting modifications.

One of the primary benefits of a 180-degree thermostat is its ability to help reduce heat soak, particularly in high-performance applications where elevated engine bay temperatures can negatively impact power production and efficiency. By allowing coolant flow to begin earlier, the cooling system can respond more effectively to increasing engine temperatures, helping maintain more stable operating conditions. This can be especially beneficial for supercharged HEMI platforms that are susceptible to increased intake air temperatures during repeated wide-open throttle pulls, drag strip passes, or prolonged street driving in warmer climates. While a thermostat alone is not a substitute for a properly designed cooling system, it serves as an excellent supporting upgrade when paired with quality coolant, upgraded heat exchangers, and optimized engine calibration.

As a genuine Mopar component, this thermostat offers the peace of mind associated with OEM engineering and manufacturing standards. Unlike some aftermarket alternatives, it is designed to fit properly within the factory thermostat housing and function seamlessly with the vehicle’s existing cooling system components. Installation is straightforward for experienced enthusiasts and professional technicians, making it a practical upgrade during routine cooling system maintenance or when replacing worn factory components.

For enthusiasts seeking improved cooling performance without sacrificing reliability, the Mopar 180 Degree Thermostat remains one of the most widely recommended modifications for Gen 3 HEMI applications. Whether your vehicle spends its time commuting, towing, carving corners, or making back-to-back passes at the drag strip, improved temperature control can help support consistent performance and long-term durability. Be sure to browse our Cooling System Components & Thermostats category for additional cooling upgrades, heat exchangers, coolant reservoirs, hoses, and supporting components designed for high-performance HEMI applications.

Specifications & Features
Manufacturer: Mopar Direct Connection
Product Name: 180 Degree Thermostat
Manufacturer Part Number: 82215542
Product Type: Engine Coolant Thermostat
Opening Temperature: 180 Degrees Fahrenheit
Construction: OEM Mopar Assembly
Material: Metal Thermostat Housing Components
Color: Natural Metallic Finish
Genuine Mopar Performance Part
Promotes Earlier Coolant Circulation
Helps Reduce Engine Operating Temperatures
Assists in Minimizing Heat Soak
Supports High-Performance Applications
Direct Replacement Design
Compatible with Factory Cooling Components
Suitable for Stock and Modified Vehicles
Vehicle Compatibility:
Dodge Challenger 5.7L HEMI
Dodge Challenger SRT8 6.1L
Dodge Challenger Scat Pack 6.4L
Dodge Challenger Hellcat 6.2L
Dodge Charger 5.7L HEMI
Dodge Charger SRT8 6.1L
Dodge Charger Scat Pack 6.4L
Dodge Charger Hellcat 6.2L
Jeep Grand Cherokee SRT 6.4L
Jeep Grand Cherokee Trackhawk 6.2L
Ram 1500 TRX 6.2L
Chrysler 300C 5.7L and 6.4L HEMI Applications
Engine Compatibility:
5.7L Gen 3 HEMI
6.1L HEMI
6.2L Supercharged HEMI
6.4L/392 HEMI
Year Compatibility: Varies by application; commonly used on 2005–2024 Gen 3 HEMI platforms
Installation Difficulty: Moderate
Professional Installation Required: No
Approximate Weight: 0.50 lbs.
Dimensions: OEM Replacement Sizing
Intended Use:
Street Performance
Drag Racing
Road Course Applications
Towing
Daily Driving
Heat Management Upgrades