Get your Everflo 12V 5.5GPM diaphragm pump up & running with this replacement pump head Kit. This pump head is loaded with features such as a Honeywell Micro switch, corrosion resistant Viton valves & Santolina diaphragm, fiberglass-reinforced polypropylene pump manifold with a 3/8” NPT connection. Other features include a silky smooth valve design for faster primes & a unique pressure switch that slowly cycles The pump to reduce wear on the motor & switch. Automatically turns off when no flow is required to conserve battery life. This easy-to-install diaphragm pump head delivers the perfect flow for spot spraying, broadcast spraying & other transfer fluid applications. The perfect replacement pump head for the Everflo EF5500 or ef5500-qa 12V diaphragm pumps.