Dorman 902-5941 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing for Toyota

Dorman 902-5941 is an engine coolant thermostat housing assembly built to match the fit and durability of the original housing on specified Toyota applications. It is made from black plastic and includes the thermostat, gasket, and sensor for a direct replacement on listed Toyota Tacoma and Toyota Hiace models.

Key Features

• Engine coolant thermostat housing assembly for Toyota cooling system service
• Black plastic housing with a 0.667 inside diameter
• Includes thermostat, gasket, and sensor
• 189 degree thermostat opening temperature
• Three mounting holes and three outlet ports
• Gasket included; mounting hardware not included
• Cross-references Motorad 1017-189 for the same application

Detailed Description

This Dorman thermostat housing assembly, part number 902-5941, is engineered for the cooling system on select Toyota Tacoma and Toyota Hiace vehicles. The housing is designed to match the stock fit and durability of the original part while handling repeated temperature swings common in engine cooling service. With a gasket seal included and a thermostat rated to open at 189 degrees, it supports proper coolant flow control in the applications listed below.

Fits 2022-2023 Toyota Tacoma, N/A, w/Trailer Tow Package. Fits 2022 Toyota Hiace, N/A, Includes Thermostat and Sensor. Fits 2020-2021 Toyota Hiace, N/A, Engine Coolant Thermostat Housing Assembly, including thermostat and sensor. Fits 2020-2021 Toyota Tacoma, N/A, Cover; w/Trailer Tow Package; Includes Thermostat. Fits 2016-2019 Toyota Tacoma, N/A, Cover; Includes Thermostat; w/Trailer Tow Package.

Common Problems This Part Can Address

• Cracked or warped thermostat housing on Toyota Tacoma or Toyota Hiace cooling systems
• Coolant leaks at the housing or gasket sealing surface
• Improper thermostat operation affecting engine temperature control
• Faulty sensor-related cooling system service on listed applications
• Replacement needs after housing wear from heat cycling

Installation Notes and Tips

Verify vehicle year, model, and package details before installation. This assembly uses three mounting holes and does not include mounting hardware. Inspect the mating surface, replace damaged coolant hoses or seals as needed, and confirm the sensor connection matches the original configuration on your Toyota Tacoma or Toyota Hiace.

Quality Assurance

Dorman designs this replacement thermostat housing assembly to follow the fit and durability expectations of the original equipment housing on the specified vehicles. The housing material, gasket seal, and included thermostat and sensor are selected for service in demanding engine cooling environments.