The Ford L8501 front side marker uses a 1895 bulb size, while rear side marker applications require either 194 or 168 bulb sizes for this model. The replacement chart covers 1997 to 1998 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 L8501 uses three distinct bulb types across its side marker positions: the 1895, 194, and 168, all of which conform to ANSI standards recognized in both the United States and Canada.
All three bulb types share the miniature wedge base design, which allows for tool-free insertion and removal by pressing and rotating the bulb within its socket.
The 1895 is a T5 miniature wedge bulb rated at 12V and 0.9W, and it serves as the front side marker bulb for the Ford L8501 across both the 1997-1998 model years.
The rear side marker position does not use a consistent bulb type across the 1997-1998 model years, as the 1997 model uses the 168 while the 1998 model uses the 194.
The 194 and 168 are both T10 miniature wedge bulbs operating at 12V, yet they differ in wattage: the 194 is rated at 3.78W while the 168 is rated at 4.9W.
Because the 194 and 168 share the same T10 wedge form factor, physical fitment between the two is possible, but their wattage difference means substituting one for the other would alter the intended light output of the rear side marker.
The T5 form factor of the 1895 is physically smaller than the T10 form factor of the 194 and 168, making the front and rear side marker bulbs non-interchangeable on the L8501.
The wattage gap between the front marker bulb (0.9W) and the rear marker bulbs (3.78W or 4.9W depending on year) reflects a deliberate difference in brightness between front and rear side marker positions.