Carburetor Gasket & Diaphragm Kit for Walbro D21-WYK, Echo P003000650, P003001120, Compatible With Up To 25% Ethanol In Fuel Quality Aftermarket Carburetor Gasket and Diaphragm Kit Made to meet or exceed OEM specifications. Replaces Walbro Kit number D21-WYK, Echo P003000650, P003001120 OK to use fuel with up to 25% Ethanol with this kit