Cadillac Series 62 Headlight Bulb Size

Cadillac Series 62 headlight bulbs utilize H5001, H6024, and H6006 sizes for high beam applications, with H5006, H6024, and H6006 sizes specified for low beam functions. The replacement chart covers 1950 through 1964 production years with corresponding bulb size specifications.

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 Type	Shop
1958-1964	H5001	Check Price
1953-1957	H6024	Check Price
1950-1952	H6006	Check Price

Low Beam Headlight

Years	Bulb Type	Shop
1958-1964	H5006	Check Price
1953-1957	H6024	Check Price
1950-1952	H6006	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). 4-inch square sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H5001	Check Price
ANSI standard (US & Canada). 7-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6024	Check Price
ANSI standard (US & Canada). 5x7-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6006	Check Price
ANSI standard (US & Canada). 5.75-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H5006	Check Price

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Additional Notes

The Cadillac Series 62 headlight specifications span model years 1950-1964 and reference four sealed beam unit types: H5001, H5006, H6006, and H6024. All four conform to ANSI standards applicable in the United States and Canada and operate on 12V electrical systems.
All bulb types listed for the Series 62 are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When a filament fails, the entire unit requires replacement rather than an internal bulb swap.
The H6024 is a 7-inch round sealed beam unit. It serves as both the high beam and low beam headlight on the Series 62 for model years 1953-1957, making it the only type in these specifications where a single unit designation covers both functions simultaneously.
The H6006 is a 5x7-inch rectangular sealed beam unit used on the Series 62 for model years 1950-1952, again covering both high and low beam positions with the same part number.
For model years 1958-1964, the Series 62 transitions to a split-function headlight system using two distinct sealed beam types: the H5001, a 4-inch square unit for high beam, and the H5006, a 5.75-inch round unit for low beam.
The H5001 and H5006 are not interchangeable with each other despite both being used on the same vehicle during 1958-1964, as they differ in physical form factor and beam function.
The H6024 and H6006 units, while both rectangular or round sealed beams from earlier model years, also carry distinct physical specifications and are not listed as interchangeable within these fitment records.
The shift from the H6006 rectangular unit to the H6024 round unit occurs at the 1953 model year, and the subsequent shift to the dual-unit H5001/H5006 system occurs at the 1958 model year.