Korky Universal 3 in. Valve Seal Kit is designed to repair leaking or running toilets, specifically compatible with American Standard Champion 3, Kohler Class 5, and Kohler Class 6 models. This kit includes two premium, long-lasting seals that effectively restore the flush valve’s performance, ensuring a reliable and durable fix. Known for its proven longevity, the valve seal kit comes with a 5-year warranty, providing peace of mind and value. It replaces the American Standard seal 738651-0070A and Kohler seal GP1059291, making it a versatile and easy-to-install solution for common toilet issues. The kit is packaged in a convenient clamshell and includes two 3-inch seals for your repair needs. Model Number: 435BP