The Mack TD700 uses 9005XS bulb size for high beam headlights and 9006XS bulb size for low beam headlights. The replacement chart covers vehicle production years from 2011 to 2017 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 Mack TD700 uses the 9005XS bulb for the high beam headlight position across all listed model years, spanning 2011-2017.
The 9005XS is a compact variant of the standard 9005 bulb, featuring a shorter base that allows fitment in housings with limited clearance behind the lamp.
The low beam headlight position on the TD700 uses the 9006XS bulb across the same 2011-2017 span.
The 9006XS is similarly a short-base derivative of the standard 9006 bulb, designed for restricted-space installations where the full-length 9006 would not seat correctly.
The 9005XS and 9006XS are not interchangeable with their standard-length counterparts, the 9005 and 9006, despite sharing the same electrical ratings and light output characteristics.
The 9005 family operates at approximately 65 watts, while the 9006 family operates at approximately 55 watts, reflecting the higher power demand typical of high beam applications relative to low beam.
Both the 9005XS and 9006XS use a P20d base type, which is a two-pin bayonet-style connector common across the HB-series halogen bulb family.
Substituting a standard 9005 or 9006 in place of the XS variants risks improper seating within the housing, which can affect beam alignment and weather sealing.