Brand New Genuine Kohler Muffler... We are an Authorized Kohler Dealer... Muffler Genuine Kohler Part # 275679-S ID: 1-1/4" OD: 4-1/8" Length: 3-1/4" Pipe Thread: 1" Female Fits Specific Kohler K241, K301, K321, K341, K532, K582, M10, M12, M14, M18 & M20 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