Bulbs By Size

Forward Lighting

D1S
D2R
D2S
D3S
D4S
H1 / 448
H21W
H27W
H3 / 453
H4 / 472 – H4 = 9003, HB2 is double filaments and is used for both low and high beams in the same bulb. Japaneese vehicles dual filament bulbs.
H7 / 499
H8 / H11 / H16
H9
H10 / 9145H10 is the same as 90059145, same as 9140 and 9155, all these bulbs are single filament bulbs use the same base PY20D, draw in different wattage, the 9140 is 40W, 9145 is 45W and 9155 is 55W. Used as fog lights and headlight bulbs Low beam bulbs and fog lights. 
H11B
H12 / 9055 – H12 is the same as 9055, same as 9040 and 9045, they all are single filament use the same base PZ20D base, the 9040 is 40W, 9045 is 45W and the 9055 is 55W. We do not offer this bulb, it is not a common type.
H13 / 9008H13 is the same as 9008 is dual filaments and is for both low and high beams. 
H14
H15 / 715
HB1 / 9004
HB2 / 9003
HB3 / 9005 – Cap (Base) – P20d (90°) – HB3 is same as H10 9005 9145 is single filament and use mostly as high beam, but for some vehicles, the 9005 is use for low beam. 
HB3A / 9005XS – Cap (Base) – P20d (straight)
HB4 / 9006 – Cap (Base) – P22d (90°) – HB4 is same as 9006 is single filament and use as low beam and fog light bulb for some vehicles.
HB4A / 9006XS – Cap (Base) – P22d (180° straight)
HB5 / 9007HB5 is same as 9007 is dual filaments and is used for both low and high beams.
HIR1 = 9011 is single filaments and is used as high beam. (We don’t carry this item anymore).
HIR2 is 9006 (HB4) is single filaments and is used as both low and high beams.

Other

1003
1076
1141
1156
1157
1445
168 / W5W
2357
2504
2721
2825
2827
3047
3156 / P27W
3157 / P27/7W
3457
37
3757A / PY27/7W
4114
52025202 is the same as *H16 Europe (h16 Japan is different) or 9009 is single filament and use as fog light bulb.  Note: H16 (type 2) from Osram/Sylvnia is a total different bulbs, it’s 19W and the base is similar to H11. Chevy fog or driving lights Jeep fog lights
7440 / W21W
7444
880 / H27W/1 – 880 = 884, 885, 892, 893, 899 have the same base PG13, different wattage. These are single filament bulbs and use as fog light bulbs and in some sxs vehicles.
881 / H27W/2 – 881 = 886, 889, 894, 896, 898 have the same base PGJ13, different wattage. These are single filament bulbs and use as fog light bulbs.
921 / W16W
921NA / WY16W
C5W
P21W
T5

Comparisons

168 vs 194