Product Material: Made of high quality alloy, stronger and more durable. Applicable Models: Suitable for 52cc, 49cc, 43cc lawn mower carburetors, chainsaw carburetors, irrigation machine carburetors and other equipment with a fixed hole spacing of 31mm. Package Includes: 1 Carburetor + 1 Gasket + 2 Primer Pumps + 1 Fuel Filter Hose + 1 Fuel Line + 1 Tank Gasket + 4 Valves + 1 Spark Plug + 2 Fuel Filters Extra Fuel. Product Features: The lawn mower carburetor is developed and improved by E-RFSEY, which is more fuel-efficient, more environmentally friendly, and easier to start than other products. After-sales service: If you encounter any problems during the purchase or installation process, please write to us in time and we will solve them immediately.