Chevrolet B60 Headlight Bulb Size

The Chevrolet B60 high beam headlight bulb accommodates 3 sizes including H6024, H4651, and H6054, while the low beam headlight bulb size options consist of H6024, H4656, and H4652. The replacement chart covers vehicle production years spanning 1980 to 1991 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 Size
1987-1991	H6024 (With 2 Headlamps)
1987-1991	H4651 (With 4 Headlamps)
1985-1986	H6024
1985-1986	H4651 (With 4 Headlamps)
1983-1984	H6054
1983-1984	H4651 (With 4 Headlamps)
1980-1982	H6024
1980-1982	H4651 (With 4 Headlamps)

Low Beam Headlight

Years	Bulb Size
1989-1991	H6024 (With 2 Headlamps)
1989-1991	H4656 (With 4 Headlamps)
1987-1988	H6024 (With 2 Headlamps)
1987-1988	H4652 (With 4 Headlamps)
1985-1986	H6024
1985-1986	H4656 (With 4 Headlamps)
1983-1984	H6054
1983-1984	H4656 (With 4 Headlamps)
1980-1982	H6024
1980-1982	H4656 (With 4 Headlamps)

Bulb Specifications

Description	Bulb Size
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). 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). 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

Other Locations

Additional Notes

The Chevrolet B60 headlight bulb specifications cover the 1980-1991 model years, with two distinct headlamp system configurations present throughout: a 2-headlamp setup and a 4-headlamp setup, each requiring different bulb sizes across both high beam and low beam positions.
The H6024 is the most frequently specified bulb across the B60 lineup, appearing in both high beam and low beam positions for the 2-headlamp configuration across the majority of model years covered. It is a 7-inch round sealed beam unit operating at 12V and conforming to ANSI standards applicable in the US and Canada.
All bulb types listed for the Chevrolet B60 are sealed beam units, meaning the entire lamp assembly is replaced as a single unit rather than replacing an internal filament or capsule. This applies to every size specified across both headlamp configurations.
The H4651 and H4656 are both 4x6-inch rectangular sealed beam units rated at 12V under ANSI standards. On the B60, H4651 serves the high beam position in 4-headlamp systems, while H4656 serves the low beam position in the same configuration, making the two non-interchangeable despite their shared physical format.
The H4652 is a variant of the H4651 and shares the same 4x6-inch rectangular sealed beam format. On the B60, it appears specifically in the low beam position of 4-headlamp systems for the 1987-1988 model years, replacing the H4656 that is otherwise used in that position across other years.
The H6054 is a 5x7-inch rectangular sealed beam unit rated at 12V. It is specified for the Chevrolet B60 in both the high beam and low beam positions for the 1983-1984 model years, covering both 2-headlamp and 4-headlamp configurations in those years.
In 4-headlamp systems, the high beam and low beam positions require separate, dedicated sealed beam units. Substituting a high beam unit such as the H4651 in place of a low beam unit such as the H4656 would represent an incorrect fitment, as the two serve distinct optical functions despite sharing the same physical housing size.
The H6024 round sealed beam format and the H4651/H4656 rectangular sealed beam format represent two physically incompatible headlamp housing types. A vehicle fitted with round headlamp housings requires the H6024, while one fitted with rectangular housings requires the appropriate 4x6-inch unit, and the two formats are not interchangeable.