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HEADLIGHT BULB CROSS REFERENCE (Sizes are imprinted on headlight lenses or check your owner's manual)

1. An H4 bulb is also referred to as a 9003 or an HB2.
2. A 9004 bulb is also referred to as an HB1.
3. A 9005 bulb is also referred to as an HB3.*
4. A 9006 bulb is also referred to as an HB4.
5. A 9007 bulb is also referred to as an HB5.
6. H.I.D. bulbs are referred to as 9500, D1R/D2R, and D1S/D2S.
7. H1, H2, H3, H7, H8, H9, H11, and 9008/H13 bulbs are usually referred to as such.

*A 9005 (65W) bulb may be substituted for the 9145/H10 (45W). Recommend Philips CrystalVision (9005CV) instead of the Sylvania Silverstar because eventhough both have the same performance, the Philips have a better rating with more light and a whiter color.

VideoJug: How To Change Your Headlight

PIAA's Inaccurate Scale:                     Correct Color Temperature:

What are the Automotive lighting FAQ - Current regulations for purchase and retrofitting?

Standard/Legal Chart for different light bulbs
FMVSS No. 108 refers to exterior lighting of motorized vehicles
Motor Vehicle Lighting Standards 

Federal Motor Vehicle Safety Standard (FMVSS) No. 108 Part 564 Replaceable Light Source Types   Allowable Bulb Types Trade Name *Max. Watts (standard wattages are less) Luminous Flux (lm) Coating, filtering, tinting Remarks Primary Alternative 9500 9500 36.5 2800 ± 400 none HID D2R D1R D2R 38 D2R 2800 ± 450 Black stripes. HID D1R D1R 2800 ± 450 Black stripes. D2S D1S D2S 38 D2S 3200 ± 450 none HID D1S D1S 3200 ± 450 none H1 H1 65 1410 ± 210 none Single axial filament H3 H3 65 1310 ± 195 none Single transverse filament H7 H7 55.6 1350 ± 12% Black cap Single axial filament H8 H8 41 730 ± 110 Black cap Single axial filament H9 H9 70 2000 ± 240 none Single axial filament H11 H11 59 1250 ± 150 Black cap Single axial filament HB1 9004 Low Beam 50 700 ± 15% Black cap Dual transverse filaments High Beam 70 1200 ± 15% HB2 9003 Low Beam 65 910 ± 10% Black cap Dual axial filaments High Beam 72 1500 ± 10% HB3 HB3A 9005/ 9005XS   70 1700 ± 12% none Single axial filament  HB3A has straight base HB4 HB4A 9006/ 9006XS 60 1000 ± 15% Black cap Single axial filament HB4A has straight base HB5 9007 Low Beam 60 1000 ± 15% Black cap Dual axial filament High Beam 70 1350 ± 15% HIR1 9011 70 2300 ± 15% Durable infrared coating Single axial filament HIR2 9012 60 1700 ± 15% Durable infrared coating Single axial filament