4pcs 87mm Piston&Rings Kit EJ7Z6108A EJ7Z6148A EJ7Z6108E EJ7Z6140A for 2015-2019 Focus Mustang MKC 4 Cyl 2.3L This 4pcs 87mm Piston&Rings Kit is designed for use with 2015-2019 Focus, Mustang, and MKC models equipped with a 4-cylinder 2.3L engine.Constructed from aluminum , the pistons are lightweight and built to meet precise engineering standards.The kit conforms to STD 0.00 specifications and is designed to prevent cylinder bore expansion during.The set includes one complete set of four pistons and one matching set of piston rings.Components are engineered for direct fitment, supporting performance under normal driving conditions.The design focuses on dimensional accuracy and functional compatibility with specified engine models.Installation follows standard mechanical procedures for piston replacement.