Brand New (2) Pack of Genuine Kohler O-Rings... We are an Authorized Kohler Dealer... (2) Pack of O-Rings Black Genuine Kohler Part # 24-153-23-S Fits Specific Kohler CH18-CH26, CV18-CV26, CV730 & CV740 Model Engines Genuine OEM Kohler Part If you need assistance locating correct part, Please email Model, Spec and Serial numbers of your engine and we will gladly look up correct parts