Keep your charging system in check with the Standard Ignition Voltage Regulator VR-789 (also written VR789). This direct-fit replacement controls the charging voltage the alternator produces, swapping in for a damaged or worn OE regulator on a wide range of Audi and Volkswagen models.
- Accurate voltage regulation: a direct-fit replacement for damaged OE units that helps deliver accurate regulating charging voltage from the alternator.
- OE-quality connections: each connector and terminal is built with OE-quality materials for an exact-fit connection and restored conductivity to the engine wiring harness.
- Heat-tolerant housing: high-grade plastic housing withstands low and high engine operating temperatures.
- Bolt-on mounting sleeve: made from high-grade anti-rust aluminum for an easy bolt-on fit.
Fitment covers the 1995 Audi 90; 2004 Audi A3; 1996-2004 Audi A4; 1998-1999 and 2001-2003 Audi A4 Quattro; 1997-1998 and 2002-2003 Audi A6; 1996-1998 and 2001-2004 Audi A6 Quattro; 2003-2005 Audi Allroad Quattro; 2002-2003 Audi S6; 2000-2002 and 2004-2006 Audi TT; 2001-2002 and 2004-2006 Audi TT Quattro; 2001-2004 VW Beetle; 1998-2002 VW Cabrio; 1992-1993 VW Corrado; 1999 VW Golf; 2000-2005 VW Jetta; 1993-1997, 2000-2002 and 2004-2005 VW Passat; and 2004-2006 and 2008-2009 VW Touareg. See the Buyer's Guide tab for engine-level details.
Interchange: R2037 · VR1021 · VR1097 · 028903803F · 028903803FX
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this voltage regulator do?
It controls and regulates the charging voltage the alternator produces, helping keep the vehicle's charging system output at the proper level.
Is the VR-789 a direct-fit replacement?
Yes. It is a direct-fit replacement designed to replace a damaged or worn OE voltage regulator on the listed applications, with an easy bolt-on mounting sleeve.
Which vehicles does it fit?
It fits a range of Audi and Volkswagen models from 1992-2009, including the A4, A6, TT, Passat, Jetta and Touareg. See the Buyer's Guide tab for the full list and engine details.
What is the housing made of?
It uses a high-grade plastic housing that withstands low and high engine operating temperatures, plus a high-grade anti-rust aluminum mounting sleeve.
What numbers does this part interchange with?
It replaces R2037, VR1021, VR1097, 028903803F and 028903803FX.
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