Dorman 902-5901 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing for Suzuki and Isuzu

Dorman 902-5901 is a replacement engine coolant thermostat housing assembly built to match the fit and durability of the original housing on specified vehicles. It includes the thermostat and gasket, and the metal housing is made to handle repeated temperature swings in the cooling system.

Compatible With 2004-2008 Suzuki Forenza, 1998-2003 Isuzu Rodeo, 2001-2003 Isuzu Rodeo Sport, and 1998-2000 Isuzu Amigo. This Dorman thermostat housing assembly is a direct-fit cooling system service part for vehicles that need a thermostat housing replacement with the thermostat included.

Key Features

• Engine coolant thermostat housing assembly with thermostat and gasket included
• Metal construction with a natural finish
• 192 degree Fahrenheit thermostat opening temperature
• 1 outlet port and 2 mounting holes
• Designed to match stock housing fit and durability
• Part number 902-5901 for catalog and service reference

Detailed Description

Dorman 902-5901 is engineered as a replacement thermostat housing assembly for select Suzuki and Isuzu applications. The housing uses a metal body with a gasket seal and a 1.115-inch inside diameter, along with flange dimensions that support OE-style fitment. The assembly is built for cooling system service where the original thermostat housing has cracked, warped, or begun leaking. Part number 902-5901 also cross-references Beck/Arnley 143-0801 for the same application.

For buyers searching for a thermostat housing for 2004-2008 Suzuki Forenza or a replacement coolant thermostat housing for 1998-2003 Isuzu Rodeo, this assembly provides the thermostat, gasket, and housing in one service part. It is also listed for 2001-2003 Isuzu Rodeo Sport and 1998-2000 Isuzu Amigo.

Common Problems This Part Can Address

• Coolant leaks at the thermostat housing
• Cracked or warped housing surfaces
• Sticking thermostat causing temperature control issues
• Overheating from restricted coolant flow
• Failed housing seal at the engine coolant outlet

Installation Notes and Tips

Drain the cooling system before removing the old housing. Clean the mating surfaces thoroughly so the gasket can seal correctly, and verify the thermostat orientation before installation. Because mounting hardware is not included, reuse or source the correct fasteners for the vehicle as needed. After installation, refill the cooling system and check for leaks and proper operating temperature.

Quality Assurance

Dorman designs this replacement housing to match the fit and durability of the stock assembly on the listed vehicles and to withstand extreme temperature changes for extended service life. The included thermostat opens at 192 degrees Fahrenheit, supporting proper engine warm-up and cooling system operation.