The Ford L8000F front side marker bulb uses 1895 or 168 size, while the rear side marker bulb uses 194, 904, or 168 size. The replacement chart covers 1987 to 1997 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 Ford L8000F front side marker position uses the 1895 bulb across model years 1987-1997, with the sole exception of the 1990 model year fitted with composite headlamps, which takes the 168 bulb instead.
The 1895 is a T5 miniature wedge bulb rated at 12V and 0.9W, making it the lowest-wattage bulb specified anywhere in these side marker positions.
The rear side marker position of the Ford L8000F draws from three different bulb sizes across its model year range, specifically the 168, 194, and 904, reflecting a notably less uniform fitment pattern than the front position.
The 168, 194, and 904 are all T10 miniature wedge bulbs operating at 12V, sharing the same base type and voltage rating while differing in wattage at 4.9W, 3.78W, and 8W respectively.
Because the 168, 194, and 904 share the T10 wedge base, physical installation may be possible across these three types, but their wattage values differ enough that substitution could affect circuit load and lamp brightness.
The 1991 model year carries conditional fitment for both the front and rear side marker positions. The front position specifies the 1895 only with composite headlamps, while the rear position specifies the 168 with 2 round headlamps and the 904 with 4 rectangular headlamps.
The 1990 model year also carries conditional rear side marker fitment, with the 194 specified for vehicles with 2 round headlamps and the 168 for vehicles with 4 rectangular headlamps.
All four bulb sizes listed in these specifications conform to ANSI standards applicable in both the United States and Canada.
The 904 is the highest-wattage bulb in these specifications at 8W, and it appears in the rear side marker position for model years 1989, 1991 (with 4 rectangular headlamps), 1994, and 1996.
The T5 base of the 1895 is physically distinct from the T10 base shared by the 168, 194, and 904, meaning front and rear side marker bulbs on the L8000F are not interchangeable by base type alone.