Dorman 902-1090 Engine Coolant Thermostat Housing Assembly

Dorman 902-1090 Thermostat Housing Assembly

Dorman 902-1090 is a replacement engine coolant thermostat housing assembly built for the specified Ford and Lincoln applications. It matches the stock housing’s fit and durability requirements while using a plastic housing with a black finish and an included gasket and seal set for service work on the cooling system.

Key Features

• Replacement engine coolant thermostat housing assembly for cooling system repair
• Plastic housing with black finish
• Includes thermostat, gasket, and O-ring
• Thermostat opening temperature: 90 Deg. F
• Five mounting holes and five outlet ports
• Standard replacement grade for specified Ford Expedition, Lincoln Navigator, and Ford F-150 applications
• Cross-reference part numbers include HL3Z8A586A and HL3Z8A586B for the same application

Detailed Description

This Dorman thermostat housing assembly, part number 902-1090, is engineered for direct replacement use on select 2017-2022 Ford and Lincoln vehicles. It is listed for 2017-2020 Ford F-150, 2018-2021 Ford Expedition, 2018-2021 Lincoln Navigator, and 2022 Ford Expedition and 2022 Lincoln Navigator built to 1/17/22. The housing is designed to handle repeated temperature changes in the cooling system and maintain the fit expected from the original assembly. For buyers searching for a Ford Expedition thermostat housing assembly, Lincoln Navigator coolant thermostat housing, or Ford F-150 thermostat housing replacement, this part number 902-1090 is the relevant OE-style service part.

Common Repair Uses

• Cracked or leaking thermostat housing
• Coolant seepage around the housing or seal area
• Fault codes or drivability issues related to coolant temperature control
• Service replacement for worn housing, gasket, or O-ring surfaces
• Cooling system maintenance on compatible Ford Expedition, Lincoln Navigator, and Ford F-150 models

Installation Notes

Verify vehicle year, make, model, and build date before installation. This assembly includes the thermostat and sealing components listed in the product data, and the housing uses five mounting holes with a 0.98 inside diameter. Clean the mating surfaces thoroughly, inspect the coolant passages for contamination, and follow the vehicle service procedure for coolant refill and air bleeding after installation. Confirm the thermostat opening temperature is correct for the application before returning the vehicle to service.

Quality Assurance

Dorman designs this replacement thermostat housing assembly to match the fit and durability of the stock unit on the specified vehicles. The part is built as a standard replacement for cooling system service on Ford Expedition, Lincoln Navigator, and Ford F-150 applications covered by the fitment data.