This cooling fan post replaces the original mounting point on 42391 TRF421X assemblies, offering a reliable anchor for an RC cooling fan. It holds the fan in the correct relation to the motor and electronics so airflow is directed across the TRF421X components.
Fit this post when the factory part is worn or broken, or when you want to relocate the fan to tune airflow. The item is sold as the post alone; confirm what is included with the seller before buying.
Functionally the post is straightforward: it locks fan placement so you can adjust orientation and clearance without altering other chassis parts, simplifying maintenance and fan swaps in the workshop or at events.
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