Part #: MD9013

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

2013+ Peterbilt 579 123″ BBC models with underbody exhaust. For 44″ sleepers with extenders. X2ACG2 LED Lights (3/4). Measure 2.5″ wide.

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Product Description

This cab, sleeper and extender kit is designed for Peterbilt 579 models with 123″ BBC and underbody exhaust. For use with 44″ sleepers with extenders. Sold in pairs, each of the skirts have X2ACG2 LED lights. Skirts measure 2.5″ wide. Hardware, lights and harnesses included.

Installation instructions: IIPB038

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


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