One New Aftermarket Replacement Piston Fits Massey Ferguson TractorsThis aftermarket replacement piston is designed for use in the Perkins A4.318 four-cylinder diesel engine found in select Fits Massey Ferguson tractors. The A4.318 is a direct-injection diesel engine with a 4.500-inch bore. This piston features 4 rings and a 114.31 mm (4.500 in) diameter, engineered to restore proper compression and engine performance in worn or damaged engines requiring rebuild or overhaul.Specifications Piston Diameter: 114.31 mm (4.500 in) - Standard Size Number of Rings: 4 Engine: Perkins A4.318 Diesel Compatible ModelsFits Massey Ferguson Tractors: 285, 698, 1080, 1085Fits Massey Ferguson Combines: 540Fits Massey Ferguson Construction / Industrial: 70 BackhoeEngine: Perkins A4.318 DieselReplaces Part Number(s):B1111, 4224056M1, 4224056V1, 738106M91, 738106V91, 86716New aftermarket replacement part - not remanufactured, not used.