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2003 BMW 325ci Bulb Size Chart

Bulb sizes may vary by trim, factory lighting package, region, production date, and previous modifications. Verify the bulb number on your existing bulb before buying.

Last database update: May 2026. Manual review status: Not yet manually reviewed.

Verify before buying: check the bulb number printed on your existing bulb, confirm your trim and factory lighting package, and review the seller's fitment notes.
Disclosure: We may earn a commission from links marked Affiliate. Unmarked retailer links may be plain search links. Always verify bulb fitment before purchasing.

2003 BMW 325ci Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Low BeamD2S—Factory HID packageHIDHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
High BeamD2S—Factory HID packageHIDHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
Fog Light9006HB4If equipped / package-dependentHalogenHigh
Pending

If equipped; fog light packages can vary by trim.

AmazoneBay
Side Marker7225—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Turn Signal Front7506—Multiple listed optionsHalogenMedium
Pending

Multiple listed options; confirm the bulb in your housing.

Amazon
Turn Signal Rear7506—Multiple listed optionsHalogenMedium
Pending

Multiple listed options; confirm the bulb in your housing.

Amazon
License Plate6418—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Map Light6486X—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Parking Light2825—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Reverse Light7506—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Trunk Light6411—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Daytime RunningH7—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay

2003 BMW 325ci Fitment Notes

Across the 2001-2006 production range, our database shows changes in the listed High Beam, Low Beam, Side Marker positions. Use the chart above for this 2003 model, then confirm the bulb number in your vehicle before buying.

Known fitment limitations

  • factory HID or LED packages may use different parts
  • fog lights may depend on equipment package
  • aftermarket headlight assemblies may use different bulbs
  • regional models and production-date splits may differ

See an incorrect bulb size? Submit a correction.

How do the 2003 BMW 325ci's bulbs compare to other years?

The 2003 BMW 325ci uses the same bulbs as the 2002 model.

The 2004 model switched to a different bulb configuration.

This bulb configuration covers the 2002–2003 model years. ← 2002 2004 →

Finding the best installation guide...

Other 325ci Years

20062005200420022001

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Frequently Asked Questions

Our database lists D2S for the 2003 BMW 325ci low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists D2S for the 2003 BMW 325ci high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2003 BMW 325ci can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed D2S size against the bulb in the housing before choosing a replacement or upgrade.

Our database lists 9006 for the 2003 BMW 325ci fog light position. Fog lights are often package-dependent, so verify that your vehicle is equipped with factory fog lights before ordering.

The 2003 BMW 325ci uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

LED upgrades are available for many D2S applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as D2S, and verify the factory housing before buying.

Our database has a fog light entry for the 2003 BMW 325ci: 9006. Fog lights may still depend on trim or equipment package.

No — the 2003 BMW 325ci uses the same bulb sizes as the 2002 model. This configuration has been consistent across the 2002–2003 generation.

The 2003 BMW 325ci is the last year in the 2002–2003 generation to use the D2S bulb for the low beam headlight.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed D2S low beam size on the existing bulb or owner's manual, then follow the service procedure for your exact trim.

Rules for LED headlight retrofits vary by location and by housing type. Avoid products that create glare or lack road-use compliance claims, and check local requirements before using an LED conversion on public roads.

Replacement cost depends on bulb technology, brand, and labor access. HID D2S capsules usually cost more than common halogen bulbs. Check seller fitment notes before comparing prices.

Halogen bulbs and LED replacements differ in output, heat behavior, beam pattern, and electronics. A correct bulb code does not guarantee a correct LED beam pattern, so verify physical fit and seller compatibility notes for the 2003 BMW 325ci.