Dorman 902-1111 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-1111 is a replacement engine coolant thermostat housing assembly built to match the fit and durability of the original housing on specified vehicles. It uses cast aluminum construction and includes a thermostat with a 192 Deg. F opening temperature, making it a direct-service solution for cooling system repairs on Ford applications such as the Ford F-250 Super Duty and Ford F-350 Super Duty.

Key Features

• Cast aluminum housing with a silver finish
• Includes thermostat and O-ring seal
• One outlet port and two mounting holes
• 50 mm inside diameter
• Designed for thermal cycling and repeated temperature changes
• Part number 902-1111 for service identification

Detailed Description

This thermostat housing assembly is engineered as a replacement for the stock coolant outlet on select Ford trucks and other listed applications. The cast aluminum body helps provide stable sealing surfaces, while the included O-ring gasket supports a secure connection at the cooling system interface. With the thermostat already installed and set to open at 192 Deg. F, Dorman 902-1111 simplifies cooling system service for technicians replacing a worn or leaking housing. This part cross-references Ford 4C4Z8575AA for the same application.

Common Repair Uses

• Coolant leaks at the thermostat housing
• Cracked or warped original housing
• Thermostat-related overheating concerns
• Sealing issues at the coolant outlet connection
• Service replacement for a damaged Ford thermostat housing assembly

Installation Notes and Tips

Verify the housing shape, outlet port layout, bolt-hole spacing, and thermostat opening temperature before installation. Clean the mating surface thoroughly and replace any contaminated coolant as part of the repair. Confirm the O-ring seats evenly during assembly and torque fasteners to the vehicle manufacturer’s specification. This part is listed for specific Ford fitments, including Ford F-250 Super Duty and Ford F-350 Super Duty applications.

Quality Assurance

Dorman designs this replacement housing to match the fit and durability of the original component and to withstand repeated temperature changes in normal cooling system operation. Part number 902-1111 is built for service use on specified vehicles and supports a direct replacement approach for cooling system maintenance.