Bosch 0392020073 Heater Water Pump

Bosch Engine Auxiliary Water Pump for OE Fitment

The Bosch 0392020073 engine auxiliary water pump is built for direct replacement on select Audi, Porsche, and Volkswagen applications. It is designed to match original equipment specifications and is tested for sealing and internal function before release.

Key Features

• Engine auxiliary water pump for heater and cooling system circulation
• Built to original equipment specifications for proper fitment
• Torque tested to verify impeller-to-shaft mating
• Vacuum leak tested to check housing, seal, tube, and plug sealing
• Uses OE mating parts and accessories to confirm bracket and isolator grommet fitment where reused
• Bosch part number 0392020073 for direct identification

Product Details

Bosch Engine Auxiliary Water Pump line components are engineered for OE-style replacement in vehicles that rely on a separate heater water pump for coolant circulation. This Bosch 0392020073 unit is a direct-fit service part for many Audi R8, Audi Q7, Porsche Cayenne, and Volkswagen Touareg applications, along with additional Volkswagen and Audi models listed below. It is also cross-referenced to 3D0965561D for the same application.

Compatible With select 2000-2015 Audi, Porsche, and Volkswagen models, including Fits 2014-2015 Audi R8, N/A; Fits 2008-2012 Audi R8, N/A; Fits 2007-2010 Audi Q7, N/A; Fits 2008-2010 Porsche Cayenne, N/A; Fits 2003-2006 Porsche Cayenne, N/A; Fits 2004-2010 Volkswagen Touareg, N/A; and additional listed fitments for Audi A3 Quattro, TT Quattro, Allroad Quattro, A6 Quattro, and Volkswagen Golf, Jetta, Passat, EuroVan, Eos, R32, and Phaeton.

Common Uses

• Restoring heater coolant circulation when the auxiliary pump fails
• Addressing coolant flow issues in the heating circuit
• Replacing a leaking pump housing or seal
• Correcting noise or poor operation from a worn impeller-shaft assembly
• Repairing fitment issues on OE-style auxiliary pump replacements

Installation Notes

Retain the isolator grommet and bracket if they are reused from the original installation. Bosch verifies fitment with OE mating parts and accessories in applications where those components are reused. Confirm the vehicle’s chassis breakpoints for Phaeton and EuroVan applications before ordering, since some listings depend on build date or chassis number.

Quality Assurance

This Bosch auxiliary water pump is new and tested for proper operation. Bosch performs torque testing to check impeller-to-shaft integrity and vacuum leak testing to verify sealing performance across the housing and related sealing points.