2 0 1978 Mack RD685S Right Air Cleaner / Air Filter Housing Contact for price (Used) 1978 Mack RD685S, AIR CLEANER- Side: Passenger Right Side, Color: Blue, Material: Metal, Engine: 1977 Mack ENDT676, Dimensions: H=29", D=13, For more information about this item,... ConditionUsedFits To Make(s)MackFits To Model(s)RD685SWill Fit Year(s)1978SideRIGHTStock NumberP-84907 MLS Number13016927CategoryAir Cleaners / Air Filter Housings Last Updated7/22/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info