Carburetor Auxiliary Acceleration Pump Diaphragm Assembly For Engine 21100-16540 2110016540 OEM number: 21100-16540, 2110016540 Interchange: Diaphragm Placement on vehicle: Engine Product name: Carburetor Repair Kits Material: Metal and plastic Compatibility: For 4AF engine The Carburetor Auxiliary Acceleration Pump Diaphragm Assembly supports the of the 4AF engine.Constructed with metal and plastic components, this diaphragm assembly contributes to engine performance.The design allows for straightforward integration into the carburetor system, aiding in consistent fuel delivery during acceleration. Installation is designed to be accessible and compatible with standard engine configurations.Positioned on the engine, the diaphragm can be replaced as part of routine carburetor maintenance without requiring specialized tools or modifications. This repair component aligns with standard specifications for vapor emission performance, operating up to 105℃ within defined parameters.It serves as a functional part of the carburetor repair process, supporting efficient engine. Compatibility Statement: This is a third-party replacement.Brand/model references serve only as compatibility indicators.