Dorman 902-5935 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Toyota Cooling Systems

Dorman 902-5935 is a replacement engine coolant thermostat housing built for specified Toyota applications. It is made from metal and shaped to match the original housing’s fit and durability, with a design that handles repeated temperature swings in the cooling system.

Compatible With Toyota Tacoma, Toyota Hilux, Toyota Hiace, and Toyota 4Runner applications, this thermostat housing supports a direct replacement approach for cooling system service. Part number 902-5935 is also referenced by Four Seasons 85385 and Gates CO34845 for the same application.

Key Features

• Metal construction with a natural finish
• Outlet port diameter: 2.05
• Inlet port diameter: 1.1
• Housing neck angle: 80 degrees
• Two mounting holes with 3-inch center-to-center spacing
• Flange thickness: 0.18
• Designed for specified Toyota cooling system applications
• Thermostat, gasket or seal, O-rings, bolts, and bleeder valve not included

Detailed Description

Dorman 902-5935 is an engine coolant thermostat housing engineered as a stock-style replacement for selected Toyota vehicles. The metal housing is built to match the original fit and mounting layout, helping maintain proper coolant routing at the thermostat location. With an 80-degree neck angle and the listed inlet and outlet port sizes, it is suited for cooling system repairs where the original housing is cracked, corroded, or leaking. This part number 902-5935 is used across multiple Toyota applications, including Tacoma, Hilux, Hiace, and 4Runner coverage.

What It Helps Fix

• Coolant leaks at the thermostat housing
• Cracked or corroded original housing
• Improper sealing at the cooling system connection
• Damage from repeated heat cycling
• Service issues caused by a worn thermostat housing on Toyota Tacoma, Hilux, Hiace, or 4Runner models

Installation Notes and Tips

Verify the housing shape, port diameters, mounting hole spacing, and 80-degree neck angle before installation. Transfer or replace the thermostat, gasket, seal, O-rings, and bolts as required by the vehicle service procedure, since they are not included with this housing. Clean the mating surfaces thoroughly and inspect adjacent cooling system components before reassembly. Fits 2005-2021 Toyota Tacoma, N/A; Fits 2007-2012 Toyota Hilux, N/A; Fits 2006-2019 Toyota Hiace, N/A; Fits 2010 Toyota 4Runner, N/A; Fits 2014-2021 Toyota Hilux, N/A; Fits 2022 Toyota Hilux, N/A; Fits 2022-2023 Toyota Tacoma, N/A.

Quality Assurance

Dorman designs replacement cooling system parts to match the fit and durability of the original component on specified vehicles. Part number 902-5935 is built for temperature variation in engine cooling service and is backed by Dorman’s product engineering standards.