This piston and rings set is designed for use in 2015–2019 Focus, Mustang, and MKC vehicles with 2.3L engines.The kit includes four pistons and four piston ring sets.It is compatible with the following part numbers: EJ7Z6108A, EJ7Z6108B, EJ7Z6108C, EJ7Z6108E, EJ7Z6135A, EJ7Z6140A, EJ7Z6148A, and EJ7Z6108EOE.Specifications: - Standard size (STD), 0.00 oversize – no cylinder boring required - Piston diameter: 87mm - Piston pin diameter: 22mm Package includes: - 1 set of pistons (4 pieces) - 1 set of piston rings (4 sets)