H11 vs H8
The H11 and H8 are physically interchangeable bulb types that share the same base and socket design. Both bulbs fit the same housing, making them direct substitutes in most applications. The H11 is found in many vehicles, commonly in the various positions position, while the H8 appears in many vehicles, typically used for various positions. Although they fit the same socket, there may be minor differences in wattage or light output between the two. Below we break down the specifications, compatible vehicles, and practical swap guidance to help you choose the right bulb.
Vehicles Using H11
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Vehicles Using H8
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Use Both
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Specification Comparison
| Feature | H11 | H8 |
|---|---|---|
| Mount Type | quarter-turn bayonet mount that locks with a short twist | quarter-turn bayonet mount similar to H11 |
| Dual Filament | No (single filament) | No (single filament) |
| Interchangeable | Yes, fits H8 socket | Yes, fits H11 socket |
| Also Known As | H8, H9, H16 | H11, H9 |
Can You Swap H11 and H8?
The H11 and H8 share the same physical base and socket type, which means you can use either one in a housing designed for the other. However, there may be slight differences in rated wattage or light output between the two. For the best results, use the specific bulb type listed in your vehicle's owner's manual. If your manual specifies H11 but you can only find H8, it will fit and work safely. When upgrading to LED, look for a kit that lists both H11 and H8 compatibility.