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2003 Ford F550 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 Ford F550 Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Low Beam9007HB5Standard listingHalogenHigh
Pending

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

AmazoneBay
High Beam9007HB5Standard listingHalogenHigh
Pending

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

AmazoneBay
Fog Light91409145 / H10If equipped / package-dependentHalogenHigh
Pending

If equipped; fog light packages can vary by trim.

AmazoneBay
Brake Light922—Standard listingHalogenHigh
Pending

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

Amazon
Dome Light578—Multiple listed optionsHalogenMedium
Pending

Multiple listed options; confirm the bulb in your housing.

Amazon
Side Marker194—Standard listingHalogenMedium
Pending

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

Amazon
Turn Signal Front3157—Standard listingHalogenHigh
Pending

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

Amazon
License Plate168—Standard listingHalogenMedium
Pending

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

Amazon
Parking Light3157—Standard listingHalogenMedium
Pending

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

Amazon
Turn Signal Rear3157—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
Trunk Light906—Standard listingHalogenMedium
Pending

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

Amazon

2003 Ford F550 Fitment Notes

Our database shows the same listed bulb sizes for the Ford F550 across the 2001 to 2003 range. Still verify your trim, lighting package, and the bulb number in the housing 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 Ford F550's bulbs compare to other years?

The 2003 Ford F550 uses the same bulbs as the 2001 model.

This bulb configuration covers the 2001–2003 model years. ← 2001

Finding the best installation guide...

Other F550 Years

2001

More from Ford

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Other Vehicles That Use 9007 / HB5 Bulbs

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Frequently Asked Questions

Our database lists 9007 for the 2003 Ford F550 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 Ford F550 high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2003 Ford F550 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 9140 for the 2003 Ford F550 fog light position. Fog lights are often package-dependent, so verify that your vehicle is equipped with factory fog lights before ordering.

The 2003 Ford F550 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 Ford F550: 9140. Fog lights may still depend on trim or equipment package.

No — the 2003 Ford F550 uses the same bulb sizes as the 2001 model. This configuration has been consistent across the 2001–2003 generation.

The 2003 Ford F550 is the last year in the 2001–2003 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 Ford F550.