4 0 Mack EMC6 Engine for a 1985 Mack RS686LST $5,950 USD (Used) 1984 Mack EMC6, ENGINE ASSEMBLY- Displacement: 11.0L, Horsepower: 300, Serial Number: 5K2828, ECS: ASPL, For more information about this item, give us a call. We ship Worldwide! (CRG... ConditionUsedHorse Power300 HPFits To Make(s)MackFits To Model(s)RS686LSTWill Fit Year(s)1985Stock NumberP-68626 MLS Number12539616CategoryEngines Last Updated1/12/2024 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info