Motorad 420-180 Engine Coolant Thermostat

Engine Coolant Thermostat for Chrysler, Dodge, Jeep, and Ram

The Motorad Standard 420-180 engine coolant thermostat is built for OE-style cooling system service with OEM quality materials and manufacturing processes. This 180°F thermostat uses a copper case and wax compound for quick reaction to coolant temperature changes, helping maintain stable engine operating temperature in demanding daily driving conditions.

Compatible With 1999-2013 Jeep Grand Cherokee, 2000-2019 Dodge Durango, and other Chrysler, Dodge, Jeep, Ram, and Mitsubishi applications listed below, the 420-180 includes a rubber seal and jiggle pin weep hole for proper coolant flow and air relief where applicable. Motorad Standard focuses on direct-fit replacement parts for common cooling system repairs.

Key Features

• 180°F engine coolant thermostat for standard temperature control
• OE supplier manufacturing with OEM specifications and processes
• Copper case and wax compound for responsive temperature regulation
• Offset design with air relief valve where applicable
• Rubber gasket/seal included
• Jiggle pin weep hole for air bleeding during service
• Sealing flange outside diameter: 2.13 in
• Flange thickness: 0.05 in

Detailed Product Overview

Motorad 420-180 is a Standard line engine coolant thermostat engineered for replacement service in Chrysler, Dodge, Jeep, Ram, and Mitsubishi cooling systems. The 180-degree Fahrenheit opening temperature supports factory-style thermal control, while the copper case and wax element are selected for consistent response as coolant temperature rises and falls. This part cross-references Dorman - HELP 42080 and Gates 52080 for the same application.

Use this thermostat when servicing vehicles such as the Jeep Liberty, Dodge Dakota, Dodge Nitro, Dodge Ram 1500, Jeep Commander, Jeep Grand Cherokee, Chrysler Aspen, Dodge Durango, Dodge Ram 2500, and Mitsubishi Raider. The Motorad 420-180 part number is also commonly searched as 420-180 thermostat or 420180 thermostat replacement.

What It Helps Address

• Engine running cooler or warmer than expected
• Delayed coolant temperature stabilization after startup
• Thermostat sticking open or sticking closed
• Temperature fluctuation during stop-and-go driving
• Cooling system service requiring a direct replacement thermostat

Installation Notes and Tips

Install the thermostat with the included rubber seal and verify the sealing flange seats evenly in the housing. The jiggle pin weep hole should be oriented to allow trapped air to escape during refill. Always inspect the thermostat housing, coolant condition, and mating surfaces before reassembly, and confirm the correct 180°F specification for the vehicle application before installation.

Quality Assurance

Motorad manufactures this Standard thermostat to OEM quality materials and safety standards as an OE supplier. It is built to OEM specifications for dependable fit and thermal response in demanding automotive cooling systems.