Motorad 1017-189 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for Toyota Tacoma

The Motorad Integrated Housing Thermostat 1017-189 is an engine coolant thermostat housing assembly built for precise temperature control in select Toyota Tacoma applications. It combines the thermostat, housing, sensor, and seal in one OE-style service part for 2016-2023 Tacoma models.

Motorad’s Integrated Housing Thermostat line focuses on OE-spec fit and cooling-system reliability, using OEM-quality materials and manufacturing processes. This 189 degree thermostat includes a copper case and wax compound for quick reaction to coolant temperature changes, along with an offset design, air relief valve, bleeder hole, and jiggle pin.

Key Features

• Part number 1017-189 integrated housing thermostat assembly
• Set to open at 189 Deg. F
• Black plastic housing with stainless steel and copper components
• Rubber gasket/seal included
• Bleeder hole and jiggle pin included
• 3 bolt holes and 3 outlet ports
• OE-style seals and offset design where applicable
• Compatible with 2016-2023 Toyota Tacoma applications listed below

Detailed Description

This thermostat housing assembly is built for direct replacement service on Toyota Tacoma cooling systems that require a 189 degree opening temperature. The integrated design helps simplify service by combining the thermostat and housing into one assembly, while the OE-specified materials and sealing design support proper coolant flow and temperature regulation. The Motorad 1017-189 is also cross-referenced to Anchor 10178 and Dorman OE Solutions 902-5941 for the same application.

Motorad’s Integrated Housing Thermostat product line is engineered for OE-style fitment and consistent thermal response. For Tacoma owners servicing the cooling system, this part number 1017-189 provides a direct-fit solution for the listed model years and engine cooling requirements.

Fitment

• Fits 2022-2023 Toyota Tacoma, N/A. Includes thermostat, housing, sensor, and seal; Integrated Housing Thermostat.
• Fits 2016-2021 Toyota Tacoma, N/A. Temperature 189F; includes thermostat, housing, sensor, and seal; without Engine Oil Cooler; OE specified temperature; Integrated Housing Thermostat.

What It Helps Address

• Coolant temperature control issues caused by a worn thermostat
• Leaks at the thermostat housing or seal interface
• Slow warm-up or unstable operating temperature
• Cooling system service needs on Toyota Tacoma models
• Replacement of an OE-style integrated thermostat housing assembly

Installation Notes

Verify engine configuration and OE temperature specification before installation. Inspect the mating surfaces, replace any damaged coolant hoses or seals, and follow the vehicle service procedure for coolant refill and air bleeding. The bleeder hole and jiggle pin are included to help with air evacuation during service.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and processes, this thermostat housing assembly is built to meet the demands of modern cooling systems. The copper case and wax compound are selected for responsive temperature control, and the included rubber seal supports proper sealing at the housing interface.