Auto Piston and Rings Set compatible with Focus Mustang MKC 2.3L models from 2015 to 2019.Constructed from forged aluminum, the pistons are designed for durability under demanding driving conditions.The set adheres to STD 0.00 specifications, maintaining engine dimensions without cylinder expansion.Each piston features a 22mm pin diameter and 87mm outer diameter.The package includes one piston set and one piston ring set.This replacement part corresponds to OEM numbers EJ7Z6108A, EJ7Z6108E, EJ7Z6148A, and EJ7Z6140A.Engineered for straightforward installation, the set supports efficient engine rebuilding for improved performance.