The bulb type for a 2011 BMW 328i depends on its headlight configuration: halogen headlights require H7 low beams and 9005 HB3 high beams, while factory Xenon HID headlights use D3S bulbs (with the ballast handling the beam). Confirm your model’s setup to determine the correct bulb.
Headlight configurations in the 2011 328i
In 2011, the 3-series could be equipped with either standard halogen headlights or factory Xenon HID headlights. The bulb replacements listed below correspond to those two configurations, which were common across markets and trims that year.
Halogen headlights
Before listing the typical bulbs used in a halogen setup, note that exact configurations can vary by market and package. The following are the common replacements for halogen-equipped cars.
- Low beam: H7
- High beam: 9005 HB3
- Front fog lights: H8 (some markets use H11; verify on your car)
Halogen-equipped 2011 328i models generally use these bulb types for the standard headlights. Always consult your owner’s manual or the service label under the hood for your exact configuration.
Xenon / HID headlights
For cars with factory Xenon headlights, the primary replacement bulbs are HID bulbs, not standard halogen bulbs. Replacement requires the proper HID bulb and ballast compatibility.
- Low/High beam (bi-xenon): D3S bulbs with the ballast (the same bulb provides both low and high beams in a bi-xenon setup)
HID-equipped 2011 328i uses D3S bulbs, and there is typically no separate high-beam bulb to replace—the ballast and projector manage the beam pattern. If your car has a non-bi-xenon HID setup, verify the bulb type with BMW or the owner’s manual.
How to verify your exact bulb type
Use these steps to confirm the exact bulb type installed on your vehicle, especially if you’re uncertain about your trim or market specifications.
- Check the owner’s manual or the original window sticker/build sheet for headlight specifications.
- Inspect the bulb in the headlight housing; the base or bulb packaging will typically carry markings such as H7, 9005 (HB3), or D3S.
- Look for a label inside the hood near the headlight that lists the recommended bulbs, or consult the BMW parts catalog using your VIN.
Once you’ve identified the configuration, you can purchase the correct bulbs with confidence and replace them following the vehicle’s service instructions.
Summary
In short, a 2011 BMW 328i may use H7 low beams and 9005 high beams if it has halogen headlights, or D3S bulbs if it has factory Xenon HID headlights. Because the headlights were offered in two configurations during that model year, always verify your car’s exact setup using the owner’s manual, a VIN lookup, or a physical inspection of the headlight assembly to ensure you buy the correct bulbs.