648-45577-00-15 Yamaha SHIM 1.5 MM

Genuine OEM shim, 1.5 mm (part #648-45577-00-15), for Yamaha outboard motors. This calibrated spacer adjusts gear position and clearance in the lower unit, establishing correct backlash for smooth, durable gear meshing. A factory-spec shim for precise gearcase setup.