Chrysler LeBaron Headlight Bulb Size

Additional Notes

• The Chrysler LeBaron uses two distinct headlight technologies across its model years: sealed beam units in earlier configurations and replaceable halogen bulbs in the 1995 model year.
• The 9005 and 9006 bulbs used in the 1995 LeBaron are single-filament halogen bulbs operating at 12V, with the 9005 rated at 65W for high beam and the 9006 rated at 55W for low beam. The two types differ in base design, with the 9005 using a P20d base and the 9006 using a P22d base, making them non-interchangeable.
• The H4651, H4652, and H4656 are all 4x6-inch rectangular sealed beam units conforming to ANSI standards for the US and Canadian markets. In sealed beam construction, the lens, reflector, and filament form a single fused unit, so the entire assembly is replaced rather than an individual bulb.
• The high beam position on the LeBaron used the H4651 sealed beam unit consistently across the 1977-1984 model years, with no variation in that position during that period.
• The low beam position shows variation among three sealed beam types across the 1977-1984 model years. The H4652 appeared in 1977, 1980, 1983, and 1984, while the H4656 appeared in 1978, 1979, 1981, and 1982.
• The H4652 is described as a variant of the H4651. Despite their physical similarity as 4x6-inch rectangular sealed beam units, the two carry different ANSI designations, reflecting differences in filament placement or light output characteristics that correspond to their respective high beam and low beam roles.
• All sealed beam types listed, H4651, H4652, and H4656, operate at 12V and meet the same ANSI regional standard, meaning they are manufactured to consistent specifications within the US and Canadian markets.
• The H4656 and H4652 share the same physical form factor as sealed beam units but are not interchangeable with each other or with the H4651, as each carries a distinct ANSI designation tied to its specific lighting function.