Truck PartsSearch / MACK / ETEC / Jake/Engine Brake / Tag #: Ryd MODEL 690BTag #: Ryd MODEL 690BMACK ETEC Jake/Engine Brake$175.00Call Us* All prices are in US dollars * Price does not include shipping and handlingConditionRETAILPart ManufacturerMACKPart ModelETECPart #030882DescriptionUsed take off Mack ETEC Jake Head. Model 690B