Dorman 902-688 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Hyundai and Kia

Dorman 902-688 is a replacement engine coolant thermostat housing built for specified Hyundai and Kia cooling systems. It is made from metal with a natural finish and includes a gasket/seal for a direct replacement on listed applications.

Compatible With 2001-2012 Hyundai Elantra, 2010-2011 Kia Soul, 2005-2010 Kia Sportage, 2005-2009 Hyundai Tucson, 2004-2009 Kia Spectra, 2005-2009 Kia Spectra5, and 2003-2008 Hyundai Tiburon. This Dorman 902-688 thermostat housing is shaped to match stock fitment and is engineered for repeated exposure to temperature swings in the cooling system.

Key Features

• Metal thermostat housing with natural finish
• Outlet port diameter: 1.375 in.
• Two mounting holes with 0.313 in. bolt hole diameter
• Gasket or seal included
• 180-degree housing neck angle
• No thermostat included
• No bleeder valve and no bolts included
• Package contents: thermostat housing with gasket

Detailed Description

This engine coolant thermostat housing is designed as a stock-style replacement for cooling system service on Hyundai Elantra, Tucson, Tiburon, and Kia Soul, Sportage, Spectra, and Spectra5 applications. The metal construction supports durability in high-heat engine environments, while the included gasket helps simplify sealing at the housing interface. Dorman 902-688 is a practical choice when the original housing is cracked, warped, or leaking at the thermostat connection.

This part cross-references Gates CO34866 and Motorad CH7688 for the same application.

Common Problems This Part Can Address

• Coolant seepage at the thermostat housing
• Cracked or warped housing surfaces
• Improper sealing at the coolant outlet
• Heat-related housing deterioration
• Service replacement for a damaged cooling system housing

Installation Notes and Tips

Verify engine application before installation, since fitment varies by year and model. Inspect the mating surface, coolant hose connection, and thermostat condition during service. Replace worn coolant seals and refill the cooling system according to the vehicle manufacturer’s procedure after installation.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the original part on listed vehicles. It is engineered to withstand extreme temperature changes for extended service life in the cooling system.