O.S. Main Needle Valve Assembly (61E-R) – 91HZ-R / 105HZ-R

Replacement O.S. main needle valve assembly for adjusting the high-speed fuel mixture on compatible O.S. helicopter engines.

Compatible with O.S. MAX-91HZ-R 3D Speed and MAX-105HZ-R engines equipped with a 61E-R or 61G carburetor.