Dorman 902-1089 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Ford and Lincoln

Dorman 902-1089 is a standard replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. It is made with aluminum and rubber components and is engineered to handle repeated temperature swings in the cooling system.

• Standard replacement thermostat housing for select Ford and Lincoln applications
• Aluminum and rubber construction with natural housing color
• Includes gasket/seal and O-ring seal type
• Thermostat opening temperature: 188 degrees F
• Housing neck angle: 120 degrees
• Five mounting holes with 10.6 mm bolt hole diameter
• Inlet port diameter: 38.2 mm; outlet port diameter: 20.8 mm
• Thermostat not included

Detailed Product Overview

This Dorman thermostat housing, part number 902-1089, is built for cooling system service on Ford Explorer, Ford Transit, Ford F-150, Ford Expedition, Ford Mustang, and Lincoln Navigator applications listed below. It follows the original housing layout with a 120-degree neck angle, 137.1 mm and 97.5 mm bolt-hole center spacing, and an O-ring seal design for a direct-fit replacement approach. This part cross-references Ford OE numbers BL3Z8A586B and BL3Z8A586G for the same application.

Compatible With: Fits 2025 Ford Explorer, housing; Fits 2020-2023 Ford Explorer, housing; Fits 2015-2025 Ford Transit-150, housing; Fits 2015-2025 Ford Transit-250, housing; Fits 2015-2025 Ford Transit-350, housing; Fits 2015-2025 Ford Transit-350 HD, housing; Fits 2015-2024 Ford Transit, housing; Fits 2011-2023 Ford F-150, housing; Fits 2015-2017 Ford Expedition, housing; Fits 2011-2017 Ford Mustang, housing; Fits 2015-2017 Lincoln Navigator, housing.

What This Part Helps Address

• Coolant leaks at the thermostat housing
• Cracked or warped housing surfaces from heat cycling
• Failed sealing at the O-ring or gasket interface
• Cooling system service needs on Ford F-150 and Ford Transit models
• Housing replacement after corrosion or age-related wear

Installation Notes and Tips

Verify the thermostat housing shape, port sizes, and bolt-hole spacing against the original part before installation. This housing does not include the thermostat or mounting hardware, so reuse or source the correct related components as needed. Clean the mating surfaces thoroughly and inspect the cooling system for contamination or damage before reassembly.

Quality Assurance

Dorman designs this replacement housing to match stock fit and durability on the listed vehicles and to withstand extreme temperature changes for extended service life. Part number 902-1089 is built as a standard replacement for service work on select Ford and Lincoln cooling systems.