View 10 Photos View 0 Videos Peterbilt 579 Air Dryer Contact for price (Used) Peterbilt 579, AIR DRYER- Make: TRP Part Number: 21242AA For more information about this item, give us a call. We ship worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON,... ConditionUsedFits To Make(s)PeterbiltFits To Model(s)579Part Number21242AAStock NumberP-65731 MLS Number12466505CategoryAir Dryers Last Updated11/27/2023 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info