Oldsmobile 88 Headlight Bulb Size

The Oldsmobile 88 high beam and low beam headlight bulb sizes include 9005, 9006, H6024, and H6006 specifications across various production configurations. The replacement chart covers vehicle data spanning 1950 to 1999, detailing bulb sizes for each model year within this range.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

High Beam Headlight

Years	Bulb Size
1992-1999	9005
1954-1957	H6024
1950	H6006

Low Beam Headlight

Years	Bulb Size
1992-1999	9006
1954-1957	H6024
1950	H6006

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005
ANSI standard (US & Canada). 7-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6024
ANSI standard (US & Canada). 5x7-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6006
ANSI standard (US & Canada). Single-filament halogen bulb with P22d base. 12V, 55W.	9006

Other Locations

Additional Notes

The 9005 bulb is a single-filament halogen unit rated at 12V and 65W, fitted with a P20d base. It serves as the high beam headlight across the Oldsmobile 88 model years 1992-1999.
The 9006 bulb is a single-filament halogen unit rated at 12V and 55W, fitted with a P22d base. It covers the low beam headlight position across the same 1992-1999 range.
Although the 9005 and 9006 share the same voltage rating and a visually similar form factor, their base types differ: P20d for the 9005 and P22d for the 9006. This difference makes the two bulbs non-interchangeable despite their physical resemblance.
The H6024 is a 7-inch round sealed beam unit operating at 12V. It handles both high and low beam functions in the Oldsmobile 88 for model years 1954-1957, meaning the entire unit is replaced rather than an internal bulb.
The H6006 is a 5x7-inch rectangular sealed beam unit also operating at 12V. It is specified for the 1950 Oldsmobile 88 and, like the H6024, requires full unit replacement rather than bulb replacement.
All four bulb types listed across these specifications conform to ANSI standards applicable in the United States and Canada.
The shift from sealed beam units to discrete halogen bulbs represents a fundamental difference in headlight construction between the earlier and later model years covered by these specifications.
The wattage difference between the 9005 (65W) and 9006 (55W) reflects their respective roles, as high beam headlights generally draw more power to produce greater output than low beam units.