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1958 Cadillac Series 75 Fleetwood 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.

1958 Cadillac Series 75 Fleetwood Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
High BeamH5001—Standard listingHalogenHigh
Pending

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

Amazon
Low BeamH5006—Standard listingHalogenHigh
Pending

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

Amazon

1958 Cadillac Series 75 Fleetwood Fitment Notes

Our database shows the same listed bulb sizes for the Cadillac Series 75 Fleetwood across the 1958 to 1964 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 1958 Cadillac Series 75 Fleetwood's bulbs compare to other years?

The 1959 model continues with the same bulb sizes.

This bulb configuration covers the 1958–1960 model years. 1959 →

Finding the best installation guide...

Other Series 75 Fleetwood Years

196419631962196119601959

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Other Vehicles That Use H5006 Bulbs

1992 BMW 3 Series1991 BMW 318i1991 BMW 318is1991 BMW 325i1991 BMW 325iX1991 BMW 325is

Frequently Asked Questions

Our database lists H5006 for the 1958 Cadillac Series 75 Fleetwood low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists H5001 for the 1958 Cadillac Series 75 Fleetwood high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 1958 Cadillac Series 75 Fleetwood can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed H5006 size against the bulb in the housing before choosing a replacement or upgrade.

The 1958 Cadillac Series 75 Fleetwood does not have a fog light bulb listed in our current database. If your vehicle has fog lights, verify the bulb in the housing or owner's manual before buying.

The 1958 Cadillac Series 75 Fleetwood uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

LED upgrades are available for many H5006 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as H5006, and verify the factory housing before buying.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed H5006 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 H5006 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 1958 Cadillac Series 75 Fleetwood.