Bulb types · Signal / marker
P21W bulb
Catalog code P21W — appears in 11 model-year × position rows. Confirm against your owner’s manual before swapping.
CodeP21W
FamilySignal / marker
Fitment rows11
Top positions5
Replacement options
Halogen, LED, and HID picks for P21W. Prices and availability come from Amazon — confirm fitment for your vehicle before buying.
Halogen
Kadiby 12 Bulk Pack 1156 Bulb,P21W 7506 Brake/Back Up/Rev...
$9.95
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Halogen
Hella 7506TB Bulb 7506 12V 21W Ba15S S8 (2)
$3.02
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Halogen
Kadiby 2 Pack 1156 Bulb, 1141 7506 Tail/Stop/Back-up/Reve...
$7.69
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LED
AUXITO 1156 LED Bulb White Super Bright 7506 1141 1003 BA...
$13.99
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Halogen
MOAYZRO 10 PCS Car 1156 Bulb, P21W 1141 1073 Turn Signal ...
$6.99
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Halogen
OSRAM Original 12V P21W halogen auxiliary light 7506-02B ...
$11.20
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LED
2 Pcs 1156 BA15S S25 1141 P21W Car Bulb Socket Adapters,S...
$6.99
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Halogen
LXIUJSFXA 2 Pack 1156 Bulb 1156NA P21W S25 1141 7506 Ba15...
$6.59
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Halogen
Craedli 10PCS Car 1156 Turn Signal Light Bulbs, P21W 1141...
$4.67
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Where P21W shows up
Ranked by how often this code is tied to a lighting position across model years — a practical clue for dual-beam vs single-beam and fog vs headlamp confusion.
| Position | Fitments |
|---|---|
| Brake Light Bulb | 4 |
| Turn Signal Light Bulb Rear | 2 |
| Back Up Light Bulb | 2 |
| Center High Mount Stop Light Bulb | 2 |
| Tail Light Bulb | 1 |
Makes that use P21W most
Based on catalog fitment density — not a claim that every trim uses this bulb.
- Hyundai7
- Mercedes-Benz2
- Audi2