This product is 16mm carb. If you are looking for 19mm carb, please check another one. Part Numbers: 951-10873, 751-10873 Huayi OEM: Made by Huayi. Many people have purchased the wrong parts because it is difficult to distinguish this carburetor from another similar-looking one. The key difference lies on the engine intake side of the carburetor. Please refer to the image to identify the correct carb before placing an order. The 16 mm carb kit includs 1x carburetor assy, mounting gaskets and 1x fuel hose. YAMAKATO 951-10873 Carburetor OEM for Huayi MTD 751-10873 Troy Bilt Cub Cadet Yard Man Yard Machine Husky Lawn Mower etc.