This is the Hirobo HI0403221 cooling fan cover stay made for the GPH 346 helicopter parts family. Its purpose is to secure the fan cover and maintain stability of the cooling assembly during both flight and ground handling.
To install on a standard GPH 346 airframe: remove the existing cover screws, align the stay with the cover and frame mounting points, then tighten using the original screws. No adapter hardware is typically needed; always verify screw engagement and clearance as part of pre-flight checks.
When tuning or servicing cooling components, the stay helps keep the fan cover aligned so airflow remains consistent, which supports reliable cooling performance from the fan assembly. Use this stay as a direct swap when a mount shows signs of wear.
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