Dorman 902-841 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing

Dorman 902-841 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. The aluminum construction and silver finish are made to handle repeated temperature swings in the cooling system, making this Dorman thermostat housing a direct-service replacement for common thermostat housing wear.

Compatible With select vehicle applications, including Honda Civic and related models that use a 1-inch outlet port and a perpendicular-to-base housing neck. If you are replacing a cracked or corroded thermostat housing on a Honda Civic, 902-841 provides an OE-style service part for cooling system repair.

Key Features

• Aluminum thermostat housing with a silver finish
• 1-inch outlet port diameter
• Three mounting holes with 0.25-inch diameter
• Air vent bleeder valve included
• Housing neck angle is perpendicular to the base
• Water outlet package contents
• Thermostat, gasket or seal, O-rings, and bolts are not included

Detailed Description

This Dorman engine coolant thermostat housing is engineered as a replacement for the stock housing on specified applications. Part number 902-841 is designed around the original mounting layout and coolant outlet configuration, helping restore proper thermostat housing function in the cooling system. The aluminum body is selected for durability in high-heat, high-coolant-temperature environments, and the integrated bleeder valve supports air evacuation during service. This part cross-references Anchor 9315 for the same application.

For buyers searching for a thermostat housing for Honda Civic cooling system repair, Dorman 902-841 is a practical OE-style replacement. It also cross-references 13049F4105 for the same application. Use this housing when the original unit is damaged, leaking, or no longer sealing correctly at the coolant outlet.

What It Helps Fix

• Coolant leaks from a cracked or warped thermostat housing
• Overheating caused by housing damage or poor coolant flow sealing
• Corrosion at the coolant outlet connection
• Air trapped in the cooling system after thermostat housing service
• Fitment issues when replacing a worn Honda Civic thermostat housing

Installation Notes

Verify outlet diameter, mounting hole count, and housing neck angle before installation. Transfer or source the thermostat, gasket or seal, O-rings, and bolts separately if required by your repair. Clean the mating surfaces thoroughly and bleed the cooling system after installation using the built-in air vent.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the original part and to withstand extreme temperature changes for extended service life. Part number 902-841 is built for cooling system repair on specified applications, including Honda Civic fitment searches.