Motorad 954-172 Engine Coolant Thermostat Housing Assembly - Upper

Integrated Housing Thermostat for Honda and Acura

Motorad 954-172 is an integrated engine coolant thermostat housing assembly built for vehicles that need precise coolant temperature control and a direct-fit housing design. It combines the thermostat, housing, and seal in one service part for select Honda Accord, Acura MDX, Acura RLX, and Acura RDX applications.

The Motorad Integrated Housing Thermostat line focuses on OE-style construction and temperature response. This 172°F unit uses a copper case and wax compound to react quickly to coolant temperature changes, helping maintain stable engine operating temperature in demanding cooling systems.

Key Features

• Integrated thermostat housing assembly for cooling system service
• 172°F temperature rating for OE-specified applications
• Plastic, steel, and copper construction
• Black finish
• Gasket/seal included with O-ring design
• Bleeder hole included for service and air removal
• 3-bolt housing design with 1 outlet port
• Rubber gasket/seal material
• Bypass diameter: 1.10 in; bypass length: 1.82 in
• Outlet diameter: 1.26 in

Detailed Description

Motorad Part Number 954-172 is an engine coolant thermostat housing assembly manufactured to OE specifications and processes using OEM-quality materials. The integrated housing design supports clean replacement of the thermostat and housing together, while the copper case and wax compound provide fast response to coolant temperature changes. This makes it a practical choice for maintaining proper engine warm-up and temperature regulation in compatible Honda Accord and Acura cooling system applications.

This part cross-references Dorman OE Solutions 902-5837 for the same application. Motorad 954-172 is also referenced by interchange numbers including 95472 and HT172-549.

Vehicle Fitment

• Fits 2020-2021 Honda Accord, Upper; Temperature 172F; Includes thermostat, housing, and seal; OE Specified Temperature; Integrated Housing Thermostat
• Fits 2013-2019 Honda Accord, N/A; Temperature 172F; Includes thermostat, housing, and seal; OE Specified Temperature; Integrated Housing Thermostat
• Fits 2017-2020 Acura MDX, N/A; Temperature 172F; Includes thermostat, housing, and seal; Alternate Temperature Option; Integrated Housing Thermostat
• Fits 2020 Acura RLX, N/A; Temperature 172F; Includes thermostat, housing, and seal; OE Specified Temperature; Integrated Housing Thermostat
• Fits 2016-2017 Acura RLX, N/A; Temperature 172F; Includes thermostat, housing, and seal; OE Specified Temperature; Integrated Housing Thermostat
• Fits 2018-2019 Acura RLX, N/A; Includes thermostat, housing, and seal; Integrated Housing Thermostat
• Fits 2014 Acura RLX, N/A; Includes thermostat, housing, and seal; Integrated Housing Thermostat
• Fits 2016-2018 Acura RDX, N/A; Temperature 172F; Includes thermostat, housing, and seal; Alternate Temperature Option; Integrated Housing Thermostat

Common Cooling System Issues

• Engine running too cool or too warm due to thermostat wear
• Coolant temperature instability during normal driving
• Housing leaks at the thermostat seal or O-ring
• Delayed engine warm-up after cold starts
• Service concerns tied to a cracked or aging thermostat housing

Installation Notes and Tips

Verify the OE-specified temperature and housing style before installation, especially on Honda Accord and Acura MDX, RLX, and RDX applications. Inspect the mating surfaces, replace worn coolant as needed, and confirm the bleeder hole is oriented correctly during assembly to help purge trapped air from the cooling system.

Quality Assurance

Motorad manufactures this integrated housing thermostat with OEM-quality materials and OE-supplier standards. It is built to OE specifications for dependable cooling system service in the listed applications.