Engine Connecting Rod Piston and Rings Kit designed for Sonata and Optima models equipped with 2.4L G4KJ engines.Constructed from steel, the kit includes components engineered for and consistent performance under normal operating conditions.The set is built to match specifications, proper fit and function.It includes 4 engine pistons, 4 piston pins, 4 connecting rods, and 1 set of piston rings, providing all necessary parts for replacement.Installation is straightforward as a direct fit with no modifications required.This kit corresponds to part numbers 23040-2G200, 23040-25200, 23510-2G500, 23510-2GGA0, 23040-2G500, 23410-2G500, 23040-2G510, 23040 2G510, 23410 2G501, 234102G501, 23510-2G540, and 23510-2G520.Designed to support engine efficiency and power output, it serves as a functional solution for engine rebuilding and maintenance.This is not an part.All brand mentions are used strictly for compatibility reference.