G4KH 2.0T Engine Piston and Pins Kit for Sonata Optima Oversize +0.5MM This piston and pin kit is designed for compatibility with 2.0T engine models used in Sonata and Optima vehicles.The set includes oversized pistons with a +0.5mm dimension and corresponding wrist pins, intended for engine rebuilds or performance restoration.Components are engineered to meet specifications for fitment and function.The kit supports proper compression and piston-to-cylinder clearance when installed in modified or worn engine blocks.Suitable for use during major engine overhauls where cylinder boring is required. This is a replacement item from an aftermarket supplier.Brand names are cited solely to demonstrate device compatibility.