Engine Piston and Pin and Snap Ring Kit designed for 2010-2019 Sonata and Optima 2.4L engines.Constructed from aluminum and steel, this kit includes engine piston, piston pin, and snap rings.Components are engineered to maintain stable engine performance and consistent power output while supporting fuel efficiency.The snap rings help secure the pistons in place to reduce movement and prevent leakage.Installation requires no special tools and is compatible with factory specifications.Each part is built to match design for fit and function. This product is an aftermarket solution.Brand names are mentioned only to clarify compatibility with specific models.