Bulb Type Chart & Cross-Reference

GENSSI BULB REFERENCE

Know the bulb. Match the code.

A visual guide to common car, truck and motorcycle bulb types, alternative names, and look-alikes that should not be confused.

Start with your vehicle’s specified bulb code, then use this chart to recognize the type. Find your vehicle’s bulb size in the Bulb Application Guide →

Same name group ≠ universal fit. “Same bulb” below means alternative designations for a standard bulb type. It does not mean that every LED or HID conversion is suitable for every lamp. Check technology, rating, connector keying and the vehicle application. Never trim tabs or force a bulb to fit.

Which names mean the same bulb?

These cross-references identify the same standard bulb type—not a different technology or a modification.

H4 = 9003 = HB2
Same bulb type / alternative names
9004 = HB1
Same bulb type / alternative names
9005 = HB3
Same bulb type / alternative names
9006 = HB4
Same bulb type / alternative names
9007 = HB5
Same bulb type / alternative names
H13 = 9008
Same bulb type / alternative names
9011 = HIR1
Same bulb type / alternative names
9012 = HIR2
Same bulb type / alternative names
H10 = 9145
Same bulb type / alternative names
880 = H27W/1
Same bulb type / alternative names
881 = H27W/2
Same bulb type / alternative names
5202 = PS24W
Same bulb type / alternative names
921 = W16W
Same bulb type / alternative names

Similar-looking does not mean interchangeable

  • H8 / H9 / H11 / H16: related base family, different keyed types and conventional wattages. Some specific retrofit products fit several; that is not a general halogen interchange rule.
  • 880 / 881: H27W/1 and H27W/2 are separate types with different bases.
  • PSX24W / PSX26W: different base designations; do not combine them into one “same bulb” group.
  • D-series HID: match the entire D-number and S/R suffix.
  • Sealed beams: the same outline can have different contact counts and beam functions.

Headlight bulbs

OE H1 halogen bulb illustration: single axial filament, windowed stamped-metal P14.5s frame and one flat bottom spade terminal

H1

Base: P14.5s

OE 9004 HB1 halogen bulb illustration with two transverse filaments, metal collar clips, red sealing ring and broad straight P29t connector base

9004 / HB1

OE bulb illustration

Base: P29t

Different rows are not cross-references for one another.

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OE H13 9008 dual-filament halogen bulb illustration with black tip, stamped retaining clip, red seal and keyed P26.4t rectangular connector base

H13 / 9008

OE bulb illustration

Base: P26.4t

Different rows are not cross-references for one another.

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Illustration of typical OE HIR1 halogen bulb, PX20d base

9011 / HIR1

Base: PX20d

Different rows are not cross-references for one another.

Related & fog bulb types

OE H10 9145 halogen bulb illustration with one axial filament, stamped metal collar and a two-contact right-angle PY20d plastic base

H10 / 9145

Base: PY20d

Do not extend this cross-reference to every bulb sold with a similar plug.

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Illustration of typical OE H8 halogen bulb, PGJ19-1 base

H8

Base: PGJ19-1

Conventional 12 V example: 35 W. Related PGJ19 base family, but a different keyed type; no blanket interchange.

Illustration of typical OE H9 halogen bulb, PGJ19-5 base

H9

Base: PGJ19-5

Conventional 12 V example: 65 W. Related PGJ19 base family, but a different keyed type; no blanket interchange.

Illustration of typical OE H11 halogen bulb, PGJ19-2 base

H11

Base: PGJ19-2

Conventional 12 V example: 55 W. Related PGJ19 base family, but a different keyed type; no blanket interchange.

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Illustration of typical OE H16 halogen bulb, PGJ19-3 base

H16

Base: PGJ19-3

Conventional 12 V example: 19 W. Related PGJ19 base family, but a different keyed type; no blanket interchange.

Illustration of typical OE H27W/2 halogen bulb, PGJ13 base

881 / H27W/2

Base: PGJ13

Not the same designation or base as 880.

Illustration of typical OE PSX24W incandescent bulb, PG20-1 base

PSX24W

Base: PG20-1

A shared base-family name does not establish interchange with PS24W. Do not confuse it with PSX26W.

Factory HID

Illustration of typical OE D1S xenon HID burner, PK32d-2 base

D1S

Base: PK32d-2

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

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OE D1R xenon HID bulb illustration with opaque black reflector shading stripe on the glass and a PK32d-3 metal integrated igniter base

D1R

Base: PK32d-3

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

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D2S xenon HID bulb illustration with clear tube, separate external return wire, black P32d-2 polymer base and round locating pin

D2S

Base: P32d-2

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

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OE D2R xenon HID bulb illustration with opaque black reflector shading stripe on the glass and a black polymer P32d-3 socket base

D2R

Base: P32d-3

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

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Illustration of typical OE D3S xenon HID burner, PK32d-5 base

D3S

Base: PK32d-5

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

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OE D3R xenon HID bulb illustration with opaque black reflector shading stripe on the glass and a PK32d-6 metal integrated igniter base

D3R

Base: PK32d-6

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

D4S xenon HID bulb illustration with clear tube, separate external return wire, dark gray P32d-5 polymer base and round locating pin

D4S

Base: P32d-5

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

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OE D4R xenon HID bulb illustration with opaque black reflector shading stripe on the glass and a black polymer P32d-6 socket base

D4R

Base: P32d-6

Separate keyed HID type. Match the full code, including the number and S/R suffix; this chart does not authorize substitution.

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Motorcycle types

Also see H4, H7 and other specified types above. HS1 is not grouped as “the same bulb” as H4.

OE HS1 motorcycle halogen bulb illustration with two axial filaments, shield cup, PX43t metal flange and three flat terminal blades

HS1

Base: PX43t

Match the motorcycle’s specified type and rating. A similar-looking base is not enough.

Illustration of typical OE S1 incandescent bulb, BA20d base

S1

Base: BA20d

Match the motorcycle’s specified type and rating. A similar-looking base is not enough.

Illustration of typical OE S2 incandescent bulb, BA20d base

S2

Base: BA20d

Match the motorcycle’s specified type and rating. A similar-looking base is not enough.

Sealed beams

Class names are approximate. Dimensions below describe example conventional lamps; replacement housings can differ. No two sealed-beam part numbers are declared interchangeable here.

Illustration of typical OE H6054 sealed-beam glass lamp, 3 flat contact lugs base

H6054 — 7×6 / 200 mm class

Base: 3 contact lugs

Rectangular lens example: 200.8 × 142.8 mm. High/low beam. Similar shape does not mean the same beam pattern or connector.

Illustration of typical OE H6024 sealed-beam glass lamp, 3 flat contact lugs base

H6024 — 7-inch round

Base: 3 contact lugs

Round lens example: 178.58 mm diameter. High/low beam. Similar shape does not mean the same beam pattern or connector.

Illustration of typical OE H4651 sealed-beam glass lamp, 2 flat contact lugs base

H4651 — small rectangular

Base: 2 contact lugs

Lens example: 167.9 × 107.5 mm. High beam. Similar shape does not mean the same beam pattern or connector.

Illustration of typical OE H4656 sealed-beam glass lamp, 3 flat contact lugs base

H4656 — 4×6 class

Base: 3 contact lugs

Lens example: 167.89 × 107.5 mm. High/low beam. Similar shape does not mean the same beam pattern or connector.

Illustration of typical OE H5001 sealed-beam glass lamp, 2 flat contact lugs base

H5001 — 5¾-inch round class

Base: 2 contact lugs

PAR46 lens example: 144.78 mm diameter. High beam. Similar shape does not mean the same beam pattern or connector.

Illustration of typical OE H5006 sealed-beam glass lamp, 3 flat contact lugs base

H5006 — 5¾-inch round class

Base: 3 contact lugs

PAR46 lens example: 144.78 mm diameter. Low-beam position. Similar shape does not mean the same beam pattern or connector.

Signal & interior bulbs

Illustration of typical OE W5W incandescent bulb, W2.1x9.5d base

168 • 194 • W5W

Small wedge bulb examples. These are separate ratings/designations, not a declaration that all three standard bulbs are identical.

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Illustration of typical OE W16W incandescent bulb, W2.1x9.5d base

921 / W16W

Base: W2.1x9.5d

Use the rating specified for the lamp.

Illustration of typical OE P21W incandescent bulb, BA15s base

1156 • P21W

Single-contact bayonet examples; do not assume identical wattage or performance.

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Illustration of typical OE P21/5W incandescent bulb, BAY15d base

1157 • P21/5W

Dual-contact bayonet examples; do not assume identical wattage or performance.

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Illustration of typical OE PY21W incandescent bulb, BAU15s base

PY21W

Base: BAU15s

Match the offset pin arrangement; do not select a bulb by its glass shape alone.

Illustration of typical OE 3156 and 3157 incandescent bulb, W2.5x16d / W2.5x16q base

3156 • 3157

Separate standard types: 3156 has a W2.5×16d base; 3157 has a W2.5×16q base.

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OE glass wedge bulb illustrations: single-filament 7440 on the left and dual-filament 7443 W21/5W with W3x16q base on the right

7440 • 7443

Separate single- and dual-function bulb types; match the full application, not just appearance.

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Illustration of typical OE 211-2 / 212-2 incandescent bulb, SV8.5-8 festoon base

211-2 / 212-2 festoon family

Match the specified lamp length and end caps; no blanket same-bulb claim.

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Bulb type questions

Is 9006 the same as HB4?

Yes. 9006 and HB4 are two designations for the same bulb type. The conventional base designation is P22d. Match the vehicle’s specified technology and rating.

Is 9005 the same as HB3?

Yes. 9005 and HB3 are two designations for the same bulb type. The conventional base designation is P20d. This does not make 9005 the same as 9006.

Are H4, 9003 and HB2 the same bulb?

H4, 9003 and HB2 are cross-reference designations for the same replacement bulb type. Match the specified rating and lamp application.

Are H8, H9, H11 and H16 all interchangeable?

Do not assume so. The conventional examples have different keyed base designations and nominal ratings: H8 PGJ19-1 at 35 W, H9 PGJ19-5 at 65 W, H11 PGJ19-2 at 55 W, and H16 PGJ19-3 at 19 W. A multi-fit LED product’s compatibility list applies to that product, not every original halogen bulb.

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New images are illustrations of typical OE bulbs, not photographs of the item supplied or dimensioned fitment drawings. Always match the specified bulb code. Cards retaining an earlier catalog reference photo are labeled separately.