Sierra 18-7021 Carburetor Kit for Mercury, MarinerFor Carburetor Models WM and WMK. Sierra high-quality carburetor kits utilize superior corrosion-resistant materials and unmatched quality testing.Kit Contains: (1) 18-2572 Carburetor Flange Gasket; (1) 18-2802 Carburetor Mounting Gasket; (1) 18-2570 Strainer Cover Gasket; (1) 18-2575 Carburetor Bowl Gasket; (1) 18-2569 Filter Cover Gasket; (1) 18-2568 Strainer Cover Screw Gasket; Interchangeable with: EMP; 1300-36001; GLM; 40480; Tillotson; WM-16; WM-17; Walbro; WM-23, WMD-1, WMK-1, WMK-2, WMK-3, WMK-4, WMK-5, WMK-7, WMK-8, WMK-9, WMK-10, WMK-11, WMK-12, WMK-13, WMK-14, WMK-15, WMK-18, WMK-19, WMK-20, WMK-21, WMK-22, WMK-24, WMK-25, WMK-26, WMK-27, WMK-28, WMK-29, WMK-30, WMK-31, WMK-32, WMK-35, WMK-36, WMK-38, WMK-39, WMK-40, WMK-41, WMK-41-1A, WMK-41-1B, WMK-41-3A, WMK-41-3B;