Dorman 902-5881 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing for Tacoma

Dorman 902-5881 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 needed for a complete cooling-system service on select Toyota Tacoma models.

Designed for 2016-2023 Toyota Tacoma applications without the Trailer Tow Package, this thermostat housing assembly helps restore proper coolant flow control and temperature regulation. The thermostat opens at 189 degrees, and the housing is shaped to match the stock mounting and outlet layout.

Key Features

• Engine coolant thermostat housing assembly for select Toyota Tacoma models
• Black plastic housing with one outlet port
• Includes thermostat, gasket, and sensor
• Thermostat opening temperature: 189 degrees
• Three mounting holes with OE-style flange dimensions
• Gasket included for sealing at the housing interface
• Dorman 902-5881 cross-references 890-189 and 1603131060 for the same application

Detailed Description

This Dorman thermostat housing assembly is engineered for direct replacement on 2016-2019 Toyota Tacoma, 2020-2021 Toyota Tacoma, and 2022-2023 Toyota Tacoma applications without the Trailer Tow Package. The housing is built from plastic and finished in black, with a gasket type seal and a single outlet port to match the original cooling-system layout. Dorman 902-5881 is a practical replacement when the original housing is cracked, warped, or no longer sealing correctly.

The included thermostat is set to open at 189 degrees, helping maintain proper engine operating temperature. The housing features three mounting holes, a 0.47 inside diameter, and OE-style flange dimensions for a precise fit on the specified Tacoma cooling system.

What This Part Helps Address

• Coolant leaks at the thermostat housing
• Cracked or heat-damaged plastic housing
• Improper engine temperature regulation
• Failed thermostat causing overheating or slow warm-up
• Sealing issues at the housing-to-engine connection

Installation Notes and Tips

Compatible With 2016-2019 Toyota Tacoma, 2020-2021 Toyota Tacoma, and 2022-2023 Toyota Tacoma, N/A, without Trailer Tow Package. Verify engine cooling-system configuration before installation, and transfer no mounting hardware unless your vehicle setup requires it, since mounting hardware is not included. Inspect the mating surfaces and replace any damaged coolant hoses or connectors during service to help ensure a proper seal.

Quality Assurance

Dorman designs this replacement thermostat housing assembly to match the fit and durability of the stock housing on the listed Toyota Tacoma applications. It is built to withstand repeated temperature changes for dependable service in the cooling system.