Genuine LiftMaster MA037 nylon shaft washer for the Mega Arm barrier gate operators.
Fitment: LiftMaster MADCBB, MATDCBB, MASDCBB and MASTDCBB. Fits on the output shaft alongside the MA036 shaft collar.
Replace when the washer is worn, flattened or the shaft has developed end play. Cheap to renew whenever the shaft assembly is apart.
