Bulb types · Fog light
H21W bulb
Catalog code H21W — appears in 1 model-year × position rows. Confirm against your owner’s manual before swapping.
CodeH21W
FamilyFog light
Fitment rows1
Top positions1
Replacement options
Halogen, LED, and HID picks for H21W. Prices and availability come from Amazon — confirm fitment for your vehicle before buying.
Halogen
FSLPQP 4 PCS H21W 12V Light Bulb Plug and Play, Car Turn ...
$8.29
Details →
Halogen
YYTQP 4 PCS H21W Light Bulb, 12V Plug and Play Car Turn S...
$8.69
Details →
Halogen
Eponcia 4PCS H21W Bulb 12V 21W BAX9s BAY9s Rear Turn Sign...
$9.99
Details →
LED
Eluseastar BAY9S H21W LED Bulbs Amber High Power 4000LM E...
$15.99
Details →
Halogen
Zosgrew 4 PCS H21W Turn Signal Light, 12V 21W 3200-3500K ...
$8.99
Details →
Halogen
HELLA H21W 24V Long Life Miniature Halogen Bulb
$10.99
Details →
Where H21W 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 |
|---|---|
| Fog Light Bulb Rear | 1 |
Makes that use H21W most
Based on catalog fitment density — not a claim that every trim uses this bulb.
- Audi1