Bulb Cross-Reference
Use this guide to identify your bulb type, its filament count and stock power draw, and its
US trade equivalent. Bulb types shown in red link to the matching PIAA product page.
Socket-interchange notes are listed under Cross-Reference — always check wattage before substituting.
Not sure which bulb you have? Check your owner's manual or the marking on the base of your
current bulb, or
contact the Help Center.
PIAA automotive bulb cross-reference: type, filament count, stock power draw, and US trade equivalent.
| Bulb Type |
Filaments |
Stock Power Draw
(major / minor filament where applicable) |
Cross-Reference |
| H1 | 1 | 6 V & 12 V: 55 W | — |
| H3 | 1 | 6 V & 12 V: 55 W | — |
| H4 | 2 | 6 V & 12 V: 60 / 55 W | Similar US bulb: HB2 (9003) |
| H7 | 1 | 12 V: 55 W | — |
| H8 | 1 | 12 V: 35 W | H8 / H9 / H11 / H16 sockets all fit one another (check wattage) |
| H9 | 1 | 12 V: 65 W | H8 / H9 / H11 / H16 sockets all fit one another (check wattage) |
| H10 | 1 | 12 V: 42 W | 9140 / 9145 » 9005 will fit with tab modification (check wattage; OK for LED — 9005 halogen runs too hot for an H10 socket) |
| H11 | 1 | 12 V: 55 W | H8 / H9 / H11 / H16 sockets all fit one another (check wattage) |
| H11B | 1 | 12 V: 55 W | US trade #: H11B |
| H13 | 2 | 12 V: 60 / 55 W | US trade #: 9008 |
| H16 | 1 | 12 V: 19 W | Japan-style 90° base (not PSX19 or PSX24) · H8 / H9 / H11 / H16 sockets all fit one another (check wattage) |
| H27W/1 | 1 | 12 V: 27 W | US trade #: 880 |
| H27W/2 | 1 | 12 V: 27 W | US trade #: 881 |
| HB3 | 1 | 12 V: 60 W | US trade #: 9005 |
| HB3A | 1 | 12 V: 60 W | US trade #: 9005XS |
| HB4 | 1 | 12 V: 51 W | US trade #: 9006 |
| HB4A | 1 | 12 V: 51 W | US trade #: 9006XS |
| HIR1 | 1 | 12 V: 60 W | US trade #: 9011 |
| HIR2 | 1 | 12 V: 55 W | US trade #: 9012 |
| HS1 | 2 | 6 V & 12 V: 35 / 35 W | For motorcycles |
| HS2 | 1 | 6 V & 12 V: 15 W | For motorcycles |
| HS5 | 2 | 12 V: 35 / 30 W | For motorcycles |
| PSX24W | 1 | 12 V: 24 W | — |
| PSX26W | 1 | 12 V: 26 W | — |