Mack FDM Light Bulb Size Chart

The Mack FDM uses light bulb sizes including 1157, 1891, 912, H6024, and H4651. A replacement chart covers 1990 to 1992 model years across 14 lighting locations on the vehicle. Each location entry specifies the applicable model years and corresponding bulb size for that position.

Select a light bulb location for Mack FDM to view detailed replacement information.

LocationYears
Back Up Light1990-1992
Brake1990-1992
Courtesy1990-1992
Engine Compartment Light1990-1992
Headlight1990-1992
Instrument Panel1990-1992
License Plate1990-1992
Parking Light1990-1992
Side Marker1990-1992
Tail Light1990-1992
Turn Signal1990-1992