Share This Page - ROCKWELL RS-13-120 Rears (Rear) in GILROY, CA #55993 2006 ROCKWELL RS-13-120 Rears (Rear) Please Call Rears (Rear) This item is from a GMC W4500. View other parts also available from the same vehicle Tag #: 55993Please Call Specialty Truck Parts Inc 7700 ARROYO CIRCLE GILROY CA 95020 Request Info Get Map Call us! 408-998-7272 2006 ROCKWELL RS-13-120 Rears (Rear) Please Call Tag #: 55993Side: N/AVIN #: J8DC4B16467006334 Ratio: 3.73 Used: Inventory Powered By HeavyTruckParts.net!