6 0 Mack EM6 Engine for a 1981 Mack R686ST Contact for price (Used) 1980 Mack EM6-285, ENGINE ASSEMBLY- Displacement: 6.72L, Horsepower: 285, E.C.S.: ASPL, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK... ConditionUsedHorse Power285 HPFits To Make(s)MackFits To Model(s)R686STWill Fit Year(s)1981Stock NumberP-59537 MLS Number12317193CategoryEngines Last Updated12/19/2023 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info