4pc set STD Piston and Rings kit with 87mm piston diameter and 22mm piston pin is designed for 2.3L engines in select vehicle models.OEM number EJ7Z6108E, also compatible with EJ7Z-6108-A, EJ7Z6108A, and EJ7Z-6135-A.This standard 0.00 specification kit no cylinder expansion, maintaining consistent compression and engine performance.Intended for use in 2015–2019 Focus, Mustang, and MKC 2.3L applications.Kit includes one set of four pistons and one set of piston rings for complete installation.Constructed to support both daily driving and performance demands, the components are engineered for and.The design supports ring seating and piston stability under normal operating conditions.Free from 105℃ substances, meeting standard emissions requirements for cleaner engine function.Suitable for engine rebuilds or performance where standard dimension components are required. Disclaimer of Affiliation: This is an aftermarket component.Brand and model mentions are for illustrative compatibility only.