This OEM NOS Mopar 1736224 piston ring is a perfect fit for your 1957-1961 automatic transmission. Made of high-quality metal, it ensures durability and reliable performance. The large kick down piston design provides easy access to your transmission's throttle valve, making it an essential part for any vintage car enthusiast. With no universal fitment and no manufacturer warranty, this piston ring is a unique find that will meet your specific needs. It comes with a seal, making it a complete package for your transmission. Don't miss out on this opportunity to enhance the performance of your vintage car's automatic transmission.