Dorman 902-670 Engine Water Pump Housing

Engine Water Pump Housing for Audi and Volkswagen

Dorman 902-670 is an OE FIX engine water pump housing built for select Audi and Volkswagen applications. It replaces the original plastic housing with cast aluminum construction and uses upgraded gasket material to help reduce oil-related swelling that can lead to cracking.

Designed to match original fit and function, this housing supports reliable cooling system service on vehicles such as the Audi A4, A5, Q5, TT, and Volkswagen GTI, Jetta, Tiguan, and Passat. Part number 902-670 is a direct-fit replacement for specified 2.0L turbo applications.

Key Features

• Cast aluminum housing for improved durability over the original plastic design
• Upgraded gasket material helps resist swelling when exposed to oil
• Matches original fit and function for specified Audi and Volkswagen applications
• Includes bypass hose port and dual outlet configuration
• Standard replacement grade for service and repair work
• Fits select Audi A3, A4, A5, A6, Q3, Q5, TT and Volkswagen CC, Eos, GLI, Golf, GTI, Jetta, Passat, Tiguan, and Beetle models

Detailed Description

This Dorman 902-670 engine water pump housing addresses a known failure point on certain Audi and VW OEM housings where the gasket can swell after oil exposure and contribute to cracking. By changing the housing material to cast aluminum and improving the gasket composition, the design helps restore cooling system integrity while maintaining the original mounting and port layout. The housing includes six mounting holes, a bypass hose port, and the specified inlet and outlet diameters for the listed applications.

This part cross-references Dorman - HELP 41086 for the same application.

Common Problems It Can Help Solve

• Cracked water pump housing caused by gasket swelling
• Coolant leaks at the housing interface
• Cooling system service issues on Audi A4, A5, Q5, and Volkswagen GTI applications
• Repeated failure of the original plastic housing
• Fitment concerns when replacing the factory water pump housing on specified 2.0L engines

Installation Notes and Tips

Verify engine code and OE part number before installation to confirm application match. Inspect the mating surfaces, hoses, and seals during service, and replace any worn components that could affect sealing. Because mounting hardware is not included, reuse or source the correct hardware as needed for the vehicle.

Compatible With 2005-2018 Audi and Volkswagen applications listed in the fitment data, including 2009-2016 Audi A4, 2010-2017 Audi A5 Quattro, 2010-2016 Audi A5, 2010-2016 Audi Q5, 2015-2018 Audi Q3, 2009-2017 Volkswagen Tiguan, 2012-2014 Volkswagen GTI, and 2008-2010 Volkswagen Passat.

Quality Assurance

Dorman engineers this OE FIX housing to address a known weakness in the original design while preserving the fit and function required for service replacement. The cast aluminum construction and upgraded sealing material are selected for dependable performance in the specified Audi and Volkswagen cooling system applications.