David Clark Comm Cord Kit for H8535 / 40689G-03 Assembly | 40599G-66 Dual Plug Adapter and the blue gel turns

and the blue gel turns pink when it is saturated with moisture

Features like dual volume controls

A223/A224 -Plain phenolic bore are used as quide and secondary control pulley in production aircraft

Compatible with Drift 4K and X

David Clark Comm Cord Kit for H8535 / 40689G-03 Assembly | 40599G-66 Dual Plug Adapter and the blue gel turnsDavid Clark Comm Cord Kit for H8535 40689G 03 Assembly 40599G 66 The David Clark 40599G 66 Comm Cord Kit is a replacement communication cord assembly designed for the David Clark H8535 headset and compatible systems using the 40689G 03 assembly. Built for dependable performance in aviation environments, this kit helps restore clear audio and reliable microphone transmit when the original cord becomes worn, damaged, or intermittent. Genuine David Clark