O.S. Crank Pin Stop Screw Sirius 7Tower Stock# OSMG4737 • Manufacturer Stock# 47102310
Notes from our tech department:
O.S. MAX FR7-420 SIRIUS-7 Engine - OSMG1307
One Crank Pin Stop Screw (key #44) for the O.S. MAX FR7-420 Engine
Installation onto the crankshaft
This screw has reverse threads.