This JJing Piston and Piston Rings Kit is a high quality replacement for your Kohler CH440 Engine. It is precision-engineered to meet or exceed OEM specifications. The piston is made from high-quality materials to ensure long-lasting performance, and the piston rings are designed to provide excellent sealing and compression. With a complete set of piston and piston rings, you can easily replace your old worn-out parts and restore your engine to its original condition. Installation is straightforward and can be done with basic tools. It is important to follow the instructions carefully to ensure proper installation and avoid any damage to the engine. If you have any questions or concerns about the JJing Piston and Piston Rings Kit, please feel free to contact us, and we will provide you with professional assistance.