When doing replacement or upgrading on 1996 – 2016 BMW Z3 Z4 Z8 Coupe M Roadster Adaptive capsule halogen headlamps HID with, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 1996 – 1998 9006
High Beam Headlight 1996 – 1998 9005
Front Fog Light 1996 – 1998 H7
Back Up Light 1996 – 1998 1156
Brake 1996 – 1998 1156
Dome Light 1996 – 1998 6411
Front Side Marker 1996 – 1998 12821
License Plate 1996 – 1998 12961
Parking Light 1996 – 1998 12821
Rear Side Marker 1996 – 1998 12821
Rear Turn Signal 1996 – 1998 1156
Tail Light 1996 – 1998 12821
Front Inner Turn Signal 1996 – 1998 P21W
Front Outer Turn Signal 1996 – 1998 12821
Center High Mount Stop Light 1996 – 1998 194
Trunk 1996 – 1998 DE3423
Low Beam Headlight 1999 – 2002 9006
High Beam Headlight 1999 – 2002 9005
Front Fog Light 1999 – 2002 H7
Back Up Light 1999 – 2002 1156
Brake 1999 – 2002 1156
Dome Light 1999 – 2002 6411
Front Side Marker 1999 12821
2000 – 2001 2357
2002 2357NA
Front Turn Signal 2000 – 2002 2357NA
License Plate 1999 – 2002 12961
Parking Light 1999 1157
2000 – 2002 2357
Rear Side Marker 1999 – 2001 1157
2002 12821
Rear Turn Signal 1999 1156
2002 3457
2000 – 2001 PY21W
Tail Light 1999 – 2002 12821
Front Inner Turn Signal 1999 1157
Front Outer Turn Signal 1999 12821
Center High Mount Stop Light 1999 – 2001 194
Trunk 1999 – 2002 DE3423
Low Beam Headlight 1999 – 2002 9006
High Beam Headlight 1999 – 2002 9005
Front Fog Light 1999 – 2002 H7
Back Up Light 1999 – 2002 1156
Brake 1999 – 2002 1156
Dome Light 1999 – 2002 6411
Front Side Marker 1999 12821
2000 – 2001 2357
2002 2357NA
Front Turn Signal 2000 – 2002 2357NA
License Plate 1999 – 2002 12961
Parking Light 1999 1157
2000 – 2002 2357
Rear Side Marker 1999 – 2001 1157
2002 12821
Rear Turn Signal 1999 1156
2002 3457
2000 – 2001 PY21W
Tail Light 1999 – 2002 12821
Front Inner Turn Signal 1999 1157
Front Outer Turn Signal 1999 12821
Center High Mount Stop Light 1999 – 2001 194
Trunk 1999 – 2002 DE3423
Low Beam Headlight 2002 9006
High Beam Headlight 2002 9005
Front Fog Light 2002 H7
Back Up Light 2002 1156
Brake 2002 1156
Front Side Marker 2002 2357NA
Front Turn Signal 2002 2357NA
License Plate 2002 12961
Parking Light 2002 2357
Rear Side Marker 2002 12821
Rear Turn Signal 2002 3457
Tail Light 2002 12821
Trunk 2002 6411
Low Beam Headlight 2002 9006
High Beam Headlight 2002 9005
Front Fog Light 2002 H7
Back Up Light 2002 1156
Brake 2002 1156
Front Side Marker 2002 2357NA
Front Turn Signal 2002 2357NA
License Plate 2002 12961
Parking Light 2002 2357
Rear Side Marker 2002 12821
Rear Turn Signal 2002 3457
Tail Light 2002 12821
Trunk 2002 6411
Low Beam Headlight 2003 – 2008 H7
High Beam Headlight 2003 – 2008 H7
Front Fog Light 2003 – 2004 H11
2005 – 2008 H8/H11/H16
Back Up Light 2003 – 2006 1156
2007 – 2008 921
Brake 2007 – 2008 1157
2003 – 2006 P21/4W
Dome Light 2003 – 2008 DE3423
Front Side Marker 2005 – 2008 12396NA
2003 – 2004 12961
Front Turn Signal 2005 – 2008 H21W
2003 – 2004 P21W
License Plate 2003 – 2008 12961
Parking Light 2005 – 2006 12396NA
2003 – 2004, 2007 – 2008 12961
Rear Turn Signal 2003 – 2004 1156
2005 – 2008 PY21W
Tail Light 2007 – 2008 1157
2003 – 2006 P21/4W
Map Light 2003 – 2008 12961
Stepwell 2003 – 2008 12961
Trunk 2003 – 2008 6411
Low Beam Headlight 2003 – 2008 D2S
High Beam Headlight 2003 – 2008 H7
Front Fog Light 2003 – 2004 H11
2005 – 2008 H8/H11/H16
Back Up Light 2003 – 2006 1156
2007 – 2008 921
Brake 2007 – 2008 1157
2003 – 2006 P21/4W
Dome Light 2003 – 2008 DE3423
Front Side Marker 2005 – 2008 12396NA
2003 – 2004 12961
Front Turn Signal 2005 – 2008 H21W
2003 – 2004 P21W
License Plate 2003 – 2008 12961
Parking Light 2005 – 2006 12396NA
2004, 2007 – 2008 12961
2003 194
Rear Turn Signal 2003 – 2004 1156
2005 – 2008 PY21W
Tail Light 2007 – 2008 1157
2003 – 2006 P21/4W
Map Light 2003 – 2008 12961
Stepwell 2003 – 2008 12961
Trunk 2003 – 2008 6411
High Beam Headlight 2007 – 2008 H7
High Beam and Low Beam Headlight 2009 – 2016 D1S
Front Fog Light 2007 – 2008 H8/H11/H16
Back Up Light 2007 – 2016 921
Brake 2007 – 2008 1157
2009 – 2016 921
Daytime Running Light 2009 – 2013 H8
Dome Light 2007 – 2008 DE3423
Front Side Marker 2007 – 2008 12396NA
Front Turn Signal 2007 – 2008 H21W
2009 – 2016 PY24NA
License Plate 2007 – 2008 12961
Parking Light 2007 – 2008 12961
Rear Turn Signal 2007 – 2008 PY21W
Tail Light 2007 – 2008 1157
Glove Box 2009 – 2016 6418
Interior Door 2009 – 2016 194
Map Light 2007 – 2008 12961
Stepwell 2007 – 2016 12961
Trunk 2009 – 2016 194
2007 – 2008 6411
Low Beam Headlight 2000 – 2003 D2S
High Beam Headlight 2000 – 2003 9011
Back Up Light 2000 – 2003 1156
License Plate 2000 – 2003 194
Parking Light 2000 – 2003 H6W
Courtesy 2000 – 2003 6418
Engine Compartment Light 2000 – 2003 578
Interior Door 2000 – 2003 194