Dorman 902-5134 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-5134 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 uses a black plastic housing with a 3.5 in. flange length, 2.5 in. flange width, and three outlet ports for a direct OE-style service replacement.

Compatible With 2005-2009 Audi A4, 2005-2009 Audi A4 Quattro, and 2006-2009 Audi A6 applications, this Dorman thermostat housing assembly is engineered for vehicles that need a precise cooling-system housing replacement. The thermostat opens at 189 Deg. F, and the assembly uses an O-ring seal design.

• Replacement engine coolant thermostat housing assembly for specified Audi applications
• Black plastic construction with regular-grade housing design
• Thermostat included with 189 Deg. F opening temperature
• Three outlet ports and two mounting holes
• O-ring gasket type with thermostat housing and O-ring in the package contents
• Cross-references Dorman - OE Solutions 576-189 for the same application

Detailed Product Overview

Dorman 902-5134 is designed as a direct replacement for the stock thermostat housing assembly on select Audi models, including Audi A4, Audi A4 Quattro, and Audi A6. The housing is made from plastic and shaped to match the original fitment, helping maintain proper coolant routing and thermostat function in the engine cooling system. With its included thermostat and O-ring seal style, this assembly supports a clean replacement of a worn, cracked, or leaking housing.

Common Cooling-System Issues

• Coolant leaks from a cracked or warped thermostat housing
• Erratic engine temperature caused by a failing thermostat assembly
• Loss of coolant flow control through a damaged housing
• Service issues from a deteriorated OE-style plastic housing
• Cooling-system warning lights tied to thermostat housing failure

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and engine application before installation. Inspect the mating surfaces, replace any worn seals as needed, and confirm the O-ring seats correctly during assembly. Because mounting hardware is not included, reuse or source the required fasteners separately if your application calls for them.

Quality Assurance

This Dorman thermostat housing assembly is engineered to match stock fit and durability and is built to withstand extreme temperature changes for extended service life. Part number 902-5134 is a direct-fit cooling-system replacement for specified Audi applications.