Truck PartsSearch / MACK / EM7 / Rocker Arm / Tag #: RYD MACK EM7 JB ROCKTag #: RYD MACK EM7 JB ROCKMACK EM7 Rocker Arm$125.00Call Us* All prices are in US dollars * Price does not include shipping and handlingConditionRETAILPart ManufacturerMACKPart ModelEM7DescriptionUsed take off Mack EM7 Jake Brake Rocker Assembly.