This comes with the sleeve and sleeve washer. The Kohler 42178 Cartridge Sleeve Kit is a genuine replacement part manufactured by Kohler. It includes the sleeve and sleeve washer. This kit is designed for specific Kohler products and plays a crucial role in maintaining the functionality of your plumbing fixtures. Whether you’re repairing or upgrading your faucet, the Genuine Kohler 42178 Cartridge Sleeve Kit is a reliable choice.