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Part # : MD6018
579 123″ BBC Underbody Exhaust Cab/Sleeper/Extender Kit
For 2013+ Peterbilt 579 long hood (123″ BBC) and 567 set-back axle long hood (121″ BBC) models with underbody exhaust. For 72″ sleepers with extenders. X2AG2 LED lights. 2 block heater cutouts. Skirts 2.5″ wide.
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