1978 Mack RD685S, Truck Trailer, Fuel Tanks, Fits to: Mack RD685S, (Used) 1978 Mack RD685S, FUEL TANK- Side: Driver Left Side, Capacity: 85 Gallon, Material: Steel, Dimensions: L=33", W=24", H=20, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON MD 21921, Truck Year 1978, VIN RD685S3685, Side Driver Side RD685S3685