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2003 Mazda B Series 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 Mazda B Series Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Turn Signal Front3157NA—Standard listingHalogenHigh
Pending

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

Amazon
Low Beam9007HB5Standard listingHalogenHigh
Pending

Dual-beam bulb; verify factory housing and lighting package.

AmazoneBay
Fog Light880899If equipped / package-dependentHalogenHigh
Pending

If equipped; fog light packages can vary by trim.

AmazoneBay
License Plate168—Standard listingHalogenMedium
Pending

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

Amazon
Parking Light3157NA—Standard listingHalogenMedium
Pending

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

Amazon
Brake Light906—Standard listingHalogenHigh
Pending

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

Amazon
Tail Light3157—Standard listingHalogenHigh
Pending

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

Amazon
Reverse Light3156—Standard listingHalogenMedium
Pending

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

Amazon
Turn Signal Rear3156—Standard listingHalogenHigh
Pending

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

Amazon
Map Light168—Standard listingHalogenMedium
Pending

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

Amazon
Dome Light912—Standard listingHalogenMedium
Pending

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

Amazon
High Beam9007HB5Standard listingHalogenHigh
Pending

Dual-beam bulb; verify factory housing and lighting package.

AmazoneBay

2003 Mazda B Series Fitment Notes

Across the 1975-2010 production range, our database shows changes in the listed Side Marker, Turn Signal Front, Fog Light 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 Mazda B Series's bulbs compare to other years?

The 2003 Mazda B Series changed bulb sizes from 2002. The previous model year used a different configuration.

The 2004 model switched to a different bulb configuration.

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

Finding the best installation guide...

Other B Series Years

20102009200820072006200520042002200120001999199819971996199519941993199219911990198919881987198619841983198219811980197719761975

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Frequently Asked Questions

Our database lists 9007 for the 2003 Mazda B Series low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists 9007 for the 2003 Mazda B Series high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2003 Mazda B Series can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed 9007 size against the bulb in the housing before choosing a replacement or upgrade.

Our database lists 880 for the 2003 Mazda B Series fog light position. Fog lights are often package-dependent, so verify that your vehicle is equipped with factory fog lights before ordering.

The 2003 Mazda B Series uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

LED upgrades are available for many 9007 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as 9007 / HB5, and verify the factory housing before buying.

Our database has a fog light entry for the 2003 Mazda B Series: 880. Fog lights may still depend on trim or equipment package.

Yes — the 2003 Mazda B Series uses different bulb sizes than the 2002 model. The 2003 generation introduced this bulb configuration.

The 2003 Mazda B Series is the only year in the 2003 generation to use the 9007 bulb for the low beam headlight.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed 9007 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. Common halogen 9007 replacements are usually cheaper than LED conversion kits. 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 Mazda B Series.