579 123″ BBC Underbody Exhaust Cab/Sleeper/Extender Kit

For 2013+ Peterbilt 579 123″ BBC models with underbody exhaust. For 44″ sleepers with extenders. 2.5″ wide. X2AG2 LED lights. 2 block heater cutouts.

Product Information

This kit is designed for 2013+ Peterbilt 579 123″ BBC underbody exhaust. For use with 44″ sleepers with extenders. Sold as a kit with cab skirts and sleeper skirts with extenders. Each skirt is 2.5″ wide and has X2AG2 LED lights. The driver side cab panel has 2 block heater holes. Lights, harnesses and hardware included.


For ordering or pricing information, please visit your local Peterbilt dealership.