Factory setup not specified in fitment source

2012 BMW 328I Headlight Bulbs & Lighting Guide

Choose the factory headlight system below to see the correct bulb and recommendation path for this 2012 BMW 328I.

Low beam
H7
High beam
H7
Factory setup
Factory setup not specified in fitment source

Choose the factory system installed in this vehicle. Bulb sizes and recommendations change with that selection.

2012 BMW 328I representative vehicle image

Best headlight upgrades

These products were physically tested by BulbFacts, but the tests were not performed in this exact vehicle unless a card explicitly says otherwise.

Factory setup not specified in fitment source

High/Low Beam Combined: H7

Best direct replacement

OSRAM Night Breaker 200

High/Low Beam Combined H7

BulbFacts testedCorrect bulb size
Best Standard Reflector Upgrade

The Night Breaker 200 is the top standard-wattage reflector recommendation at the time of review. Anything scoring higher in the reflector chart uses much higher wattage, while the NB200 keeps the simple drop-in halogen format.

General BulbFacts housing test
Read BulbFacts reviewCompare test resultsBuy at eBay

A matching bulb size identifies fitment; it does not by itself prove optical compatibility or make a conversion a vehicle-specific recommendation.

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Technical details and sources

Fitment, factory-system research, and BulbFacts product tests remain separate evidence. A matching bulb size does not by itself make a conversion a vehicle-specific recommendation.

PositionBulb or systemEvidence status
High/Low Beam CombinedFactory setup not specified in fitment sourceH7Possible fitment — verify installed bulb
Low BeamLighting: halogenH7Likely fitment
Low BeamLighting: HIDD2SLikely fitment

Each model year opens its own BulbFacts record. Bulb sizes and factory systems are not carried over from adjacent years.

Fitment note: Verify the installed bulb, connector, housing, and factory system before ordering. A bulb-size match is not automatically a conversion recommendation or proof of vehicle-specific testing.