American LaFrance Metropolitan Headlight Bulb Size
American LaFrance Metropolitan high beam headlight bulbs use H4651 size while low beam headlight bulbs use H4652 or H4656 sizes. The replacement chart covers 2000 to 2008 vehicle 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.
The H4651, H4652, and H4656 bulb types are all ANSI-standardized sealed beam units used across the American LaFrance Metropolitan's headlight system. Each operates at 12V and follows the 4x6-inch rectangular sealed beam format established under North American ANSI standards.
All three bulb types are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit requires replacement rather than an internal bulb swap.
The H4651 serves as the high beam headlight across all listed model years of the American LaFrance Metropolitan, covering 2000-2008 without variation.
The H4652 is a variant of the H4651 within the same 4x6-inch rectangular sealed beam family. Despite their shared physical format, the two are distinct part numbers and are not confirmed as interchangeable in these specifications.
The low beam headlight position shows two different bulb types across the 2000-2008 model range. The H4656 is specified for 2000-2001 and 2005-2007, while the H4652 is specified for 2002-2004 and 2008.
The H4656 and H4652 share the same physical sealed beam format but carry separate ANSI designations, which typically indicate differences in filament wattage or light output. Substituting one for the other without confirming ANSI equivalency is not supported by these specifications.
The low beam specification for the Metropolitan is not uniform across its model range, which means year-specific verification is necessary before sourcing a replacement low beam unit.