Bosch is an OEM supplier to Volkswagen. Also known as an  impulse sensor.

1998-2005 Passat V6

1996-1997 Passat TDI

1998-2005 Audi A4 V6

2000-2002 Audi S4 (APB)

1997-1998 Golf/Jetta TDI

1998-2000 Beetle 2.0L (AEG)

1998-2001 Audi A6 2.7L/2.8L

1999-2001 Beetle 1.8T (AWV)

2000-2001 Audi TT 1.8T (ATC)

1999.5-2001 Golf/Jetta 2.0L (AEG)

2000-2006 Audi TT 1.8T (ATC, AWP)

2000-2001 Golf/Jetta 1.8T (AWD, AWW)

2004-2005 Beetle 2.0L (AVH, AZG, BEV)