The Pontiac LeMans headlight bulb size chart specifies high beam and low beam bulb sizes including H6054, H4651, H4652, and H6024 configurations for this vehicle model. The replacement chart covers 1963 through 1981 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
All headlight bulb sizes specified for the Pontiac LeMans across 1963-1981 are sealed beam units, meaning the entire lens-reflector-filament assembly is replaced as one piece rather than replacing an internal bulb separately.
Every sealed beam type listed for the LeMans operates at 12 volts and conforms to ANSI standards recognized in both the United States and Canada.
The H6054 is a 5x7-inch rectangular sealed beam unit used on the LeMans for both high and low beam functions during 1978-1981, making it the only type in these specifications where a single part number serves both beam positions simultaneously.
The 1976-1977 LeMans used separate part numbers for high and low beams despite sharing the same 4x6-inch rectangular sealed beam format: the H4651 handled high beam output while the H4652, a variant of that unit, handled low beam output.
The H6024, a 7-inch round sealed beam unit, served both high and low beam positions on the 1973-1975 LeMans under a single shared part number, similar to the H6054 arrangement used in later years.
The 1963-1972 LeMans used a split-type sealed beam system with two distinct round units: the H5001, a 4-inch square sealed beam, covered high beam duty, while the H5006, a 5.75-inch round sealed beam, handled low beam output.
The H5001 and H5006 pairing represents the longest continuous fitment period in these specifications, spanning the 1963-1972 model years across both beam positions.
Because each sealed beam type has a physically distinct size and shape, substitution between part numbers is not supported by these specifications, and fitment is specific to the beam position and model year combination listed.