Yamaha Lower Unit Assembly - 6M8-G5300-10-EKYamaha Lower Unit Assembly Outboard Drivetrain 6M8 G5300 10 EK Overview When a lower unit starts going, you feel it right awayrough shifting, noise, and a loss of confidence on the water. This Yamaha assembly is the kind of replacement you put on and forget about because it just works the way it should. Everything lines up properly, and the motor feels smooth again under load. Its a solid choice whether youre maintaining a reliable setup or bringing