H11 vs H7
The H11 and H7 are two of the most common automotive bulb types, but they use different sockets and are not interchangeable. The H11 is primarily used for various positions and fits many vehicles in our database. The H7 is typically found in the various positions position across many vehicles. Many cars use both bulbs in different positions, which is why shoppers often compare them side by side. This guide covers the key differences in fitment, brightness, and application to help you identify which bulb goes where on your vehicle.
Vehicles Using H11
0
Vehicles Using H7
0
Use Both
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Specification Comparison
| Feature | H11 | H7 |
|---|---|---|
| Mount Type | quarter-turn bayonet mount that locks with a short twist | spring clip or wire retainer that holds the bulb in the socket |
| Dual Filament | No (single filament) | No (single filament) |
| Interchangeable | No, different socket than H7 | No, different socket than H11 |
| Also Known As | H8, H9, H16 | No equivalents |
Why H11 and H7 Are Not Interchangeable
The H11 and H7 have different base designs and are not physically interchangeable. Attempting to force one into the other's socket can damage the housing or create a loose connection that causes flickering or overheating. If your vehicle uses both bulb types in different positions, make sure you purchase the correct size for each position. Always verify the specific bulb type stamped on the existing bulb or listed in your owner's manual before ordering replacements.