Hirobo HRB-0404761 - GE Gasoline Tank Cap  [HRB-0404761]

GE gasoline tank cap for Hirobo helicopters

The Hirobo HRB-0404761 GE gasoline tank cap is an RC-scale replacement part intended for fuel tanks used on Hirobo Eagle, Freya, EX and SX helicopter models. As a direct accessory for RC helicopters, the cap's role is to provide a secure closure at the fuel tank opening, supporting routine maintenance and tuning tasks related to the fuel system.

Compatibility is limited to the helicopter families listed above; confirm your tank neck and thread interface before ordering. Installation is straightforward: fit the cap to the tank opening, secure it until seating is firm, and verify there is no fuel seepage during static checks. Regular inspection of the cap and tank opening helps maintain reliable fuel delivery during bench tuning and range testing.

For tuning and setup, a properly seated tank cap contributes to consistent fuel flow and predictable engine response during throttle mapping and needle adjustments. Replace worn or damaged caps as part of scheduled maintenance to reduce variability in fuel pressure and to simplify troubleshooting during flight preparation.