The 3C8-00001-4 Outboard Parts Piston is specifically designed for 68mm engines used in boats with a 40HP capacity. This high-quality piston is suitable for the 3C8-00001-3 engine, ensuring optimal performance and reliability. The piston's compatibility with the 3C8-00001-3 engine ensures a seamless installation, reducing downtime and increasing productivity for boaters. With its robust construction and advanced materials, the 3C8-00001-4 Outboard Parts Piston guarantees a smooth and powerful engine operation, providing you with a hassle-free boating experience.