Chevrolet El Camino Headlight Bulb Size

Chevrolet El Camino high beam and low beam headlight bulbs utilize sizes H4651, H6054, H6024, H4656, and H4652 depending on production specifications. The replacement chart covers 1959 to 1987 model years with corresponding bulb size data.

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
1982-1987	H4651
1978-1981	H6054
1976-1977	H4651
1971-1975	H6024
1964-1970	H5001
1959-1960	H5001

Low Beam Headlight

Years	Bulb Size
1987	H4656
1986	H4652
1985	H4656
1984	H4652
1983	H4656
1982	H4652
1978-1981	H6054
1976-1977	H4652
1971-1975	H6024
1964-1970	H5006
1959-1960	H5006

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H4651
ANSI standard (US & Canada). 5x7-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6054
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). 4-inch square sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H5001
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H4656
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit, variant of H4651. Not a replaceable bulb — the entire unit is replaced. 12V.	H4652
ANSI standard (US & Canada). 5.75-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H5006

Other Locations

Additional Notes

All headlight bulb sizes listed for the Chevrolet El Camino across its production years are sealed beam units, meaning the entire lens-and-filament assembly is replaced as one piece rather than replacing an internal bulb separately.
Every sealed beam type specified for the El Camino operates at 12 volts and conforms to ANSI standards recognized in both the United States and Canada.
The H4651 and H4656 are both 4x6-inch rectangular sealed beam units, while the H4652 is a variant of the H4651 sharing the same form factor. All three appear in the 1976-1987 high and low beam positions, but they are not universally interchangeable across beam positions despite their physical similarity.
The H6054 is a 5x7-inch rectangular sealed beam unit used in both the high and low beam positions of the El Camino for 1978-1981, making it the only type in these specifications where a single part number covers both beam functions for those years.
The H6024 is a 7-inch round sealed beam unit used across both beam positions for 1971-1975, while the H5006 is a smaller 5.75-inch round sealed beam unit serving the low beam position for 1959-1970.
The H5001 is a 4-inch square sealed beam unit assigned to the high beam position for 1959-1970. Its square housing distinguishes it physically from the round H5006 used alongside it in the low beam position during those same years, making the two non-interchangeable despite serving the same vehicle.
The low beam position on the El Camino for 1982-1987 alternates between H4652 and H4656 depending on the specific model year, while the high beam position uses H4651 throughout that same period without variation.