The Genuine Tecumseh 28988 Piston Ring Set is a high-quality replacement part for lawn mowers. This oversized .020 ring set is sold individually and is designed specifically for Tecumseh engines. With this authentic part, you can ensure that your lawn mower continues to run smoothly and efficiently. Perfect for backyard enthusiasts and professionals alike, this piston ring set is a reliable choice for maintaining your lawn mower's performance.