07406-004000C Fuel Pr.100Psi Gauge - Overview. The 07406-004000C Fuel Pr.100Psi Gauge is an essential component for Honda marine engine systems. This fuel pressure gauge is designed to accurately measure fuel pressure up to 100 PSI, ensuring the optimal operation of the fuel delivery system. By providing precise readings, it helps maintain reliable engine performance and prevents potential fuel system issues. This gauge is engineered to seamlessly integrate with existing marine engine parts, gua