Hirobo HRB-0404761 GE Gas Tank Cap Compatible with Eagle, Freya, EX, SX  [HRB-0404761]

Replacement fuel cap — GE type for Hirobo tanks

The Hirobo HRB-0404761 GE gasoline tank cap is an RC replacement component intended for fuel tanks on Hirobo Eagle, Freya, EX and SX helicopter models. It provides a dependable closure at the tank opening to assist with service and tuning procedures.

This cap fits the specific helicopter families listed; always verify your tank neck and thread pattern before ordering. Installation is simple: align the cap, tighten until seated securely, and run a static inspection for leaks. Frequent checks of the cap and tank interface help preserve stable fuel flow during bench tuning and test runs.

For tuning work, ensuring the cap is seated correctly will help maintain consistent fuel pressure and predictable engine response when adjusting throttle curves or needle valves. Replace caps that show wear, distortion or loss of sealing ability to avoid inconsistent performance during flight prep.