4pcs 87.5mm Piston Rings kit EJ7Z6108E EJ7Z6108A EJ7Z6108B EJ7Z6140A For 15-19 Focus Mustang MKC 2.3L Car Parts This piston ring set includes four rings with a diameter of 87.5mm, designed for use in 2.3L engines found in select models including the Focus, Mustang, and MKC from 2015 to 2019.The kit contains part numbers EJ7Z6108E, EJ7Z6108A, EJ7Z6108B, and EJ7Z6140A, intended for engine rebuilds or maintenance.These rings are engineered to fit standard bore applications and help maintain proper compression and oil control within the cylinder. This product is a third-party replacement.Any use of brand names or model designations is purely to indicate compatibility.