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1990 Oldsmobile Delta 88 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.

1990 Oldsmobile Delta 88 Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Side Marker194—Standard listingHalogenMedium
Pending

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

Amazon
High Beam9004HB1Standard listingHalogenHigh
Pending

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

Amazon
Low Beam9004HB1Standard listingHalogenHigh
Pending

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

Amazon
Turn Signal Rear1157—Standard listingHalogenHigh
Pending

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

Amazon
Tail Light1157—Standard listingHalogenHigh
Pending

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

Amazon
Reverse Light1156—Standard listingHalogenMedium
Pending

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

Amazon
License Plate194—Standard listingHalogenMedium
Pending

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

Amazon
Brake Light1156—Standard listingHalogenHigh
Pending

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

Amazon

1990 Oldsmobile Delta 88 Fitment Notes

Across the 1965-1990 production range, our database shows changes in the listed High Beam, Low Beam, Turn Signal Rear positions. Use the chart above for this 1990 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 1990 Oldsmobile Delta 88's bulbs compare to other years?

The 1990 Oldsmobile Delta 88 changed bulb sizes from 1989. The previous model year used a different configuration.

This bulb configuration covers the 1990 model years. ← 1989

Finding the best installation guide...

Other Delta 88 Years

1989198819871986198519841983198219811980197819761974197319721971197019691968196719661965

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Frequently Asked Questions

Our database lists 9004 for the 1990 Oldsmobile Delta 88 low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists 9004 for the 1990 Oldsmobile Delta 88 high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 1990 Oldsmobile Delta 88 can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed 9004 size against the bulb in the housing before choosing a replacement or upgrade.

The 1990 Oldsmobile Delta 88 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 1990 Oldsmobile Delta 88 uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

LED upgrades are available for many 9004 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as 9004 / HB1, and verify the factory housing before buying.

Yes — the 1990 Oldsmobile Delta 88 uses different bulb sizes than the 1989 model. The 1990 generation introduced this bulb configuration.

The 1990 Oldsmobile Delta 88 is the only year in the 1990 generation to use the 9004 bulb for the low beam headlight.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed 9004 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 9004 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 1990 Oldsmobile Delta 88.