When doing replacement or upgrading on 1958 – 2018 Volkswagen Beetle 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 1998 – 2002 H1
2006 – 2010 H7
High Beam Headlight 1998 – 2002 H1
2006 – 2010 H7
High Beam and Low Beam Headlight 1967 – 1979 6014
1958 – 1966 H6006
Front Fog Light 1998 – 2002 H1
2006 – 2010 H11
Back Up Light 1967 – 1970 1073
1971 – 1979, 1998 – 2002 1156
2006 – 2010 H21W
Brake 1969 – 1970 1034
1958 – 1966 1154
1973 – 1974, 1978 – 1979 1156
1967 – 1968, 1971 – 1972, 1975 – 1977, 1998 – 2002, 2006 – 2010 1157
Dome Light 1979 1893
1978 211-2
2006 – 2010 DE3423
Front Side Marker 1971 – 1972 1157
2006 – 2010 12961
1978 – 1979 1893
1973 – 1977 1895
1998 – 2002 2357
Front Turn Signal 1958 – 1966 1129
1967 – 1979 1157
1998 – 2002 2357NA
2006 – 2010 H21W
License Plate 2006 – 2010 12844
1998 – 2002 12961
1958 – 1966 63
1967 – 1979 89
Parking Light 1967 – 1979 1157
1998 – 2002, 2006 – 2010 12961
1958 – 1966 63
Rear Side Marker 1971 – 1972 1157
1998 – 2002, 2006 – 2010 12961
1978 – 1979 1893
1973 – 1977 97
Rear Turn Signal 1958 – 1963 1129
1964 – 1966 1154
1967 – 1979, 1998 – 2002 1156
2006 – 2010 PY21W
Tail Light 1971 – 1972, 1975 – 1977, 1998 – 2002, 2006 – 2010 1157
1958 – 1966 63
1967 – 1970 67
1973 – 1974, 1978 – 1979 97
Luggage Compartment 1998 – 2002, 2006 – 2010 12961
Glove Box 1998 – 2002, 2006 – 2010 12961
Interior Door 1998 – 2002 DE3423
Map Light 2006 – 2010 PC194
Stepwell 2006 – 2010 12961
Low Beam Headlight 2003 – 2005 H1
High Beam Headlight 2003 – 2005 H1
High Beam and Low Beam Headlight 2012 – 2018 9003
Front Fog Light 2017 – 2018 9006
2003 – 2005 H1
2012 – 2016 H8
Back Up Light 2003 – 2005 1156
2012 – 2018 921
Brake 2003 – 2005 1157
2012 – 2018 7443
Daytime Running Light 2012 – 2018 7443
Front Side Marker 2012 – 2018 12256
2003 – 2005 2357
Front Turn Signal 2003 2357
2004 – 2005 2357NA
2012 – 2018 H21W
License Plate 2003 – 2005, 2012 – 2016 12961
2017 – 2018 194
Parking Light 2003 – 2005 12961
2012 – 2018 7443
Rear Side Marker 2003 – 2005 12961
2012 – 2018 7443
Rear Turn Signal 2003 – 2005, 2012 – 2018 1156
Tail Light 2003 – 2005 1157
2012 – 2018 7443
Luggage Compartment 2003 – 2005 12961
2012 – 2018 6411
Glove Box 2003 – 2005 12961
Interior Door 2003 – 2005 DE3423
Map Light 2012 – 2018 12961
2003 – 2005 PC194
High Beam and Low Beam Headlight 2003 – 2005 D2S
Front Fog Light 2003 – 2005 H1
Back Up Light 2003 – 2005 1156
Brake 2003 – 2005 1157
Front Side Marker 2003 – 2005 2357
Front Turn Signal 2003 – 2005 2357NA
License Plate 2003 – 2005 12961
Parking Light 2003 – 2005 194
Rear Side Marker 2003 – 2005 12961
Rear Turn Signal 2003 – 2005 1156
Tail Light 2003 – 2005 1157
Luggage Compartment 2003 – 2005 12961
Glove Box 2003 – 2005 12961
Interior Door 2003 – 2005 DE3423
Map Light 2003 – 2005 PC194