Yamaha - Gear 2 assy - 6E0-45570-00-00Yamaha Gear 2 Assembly Lower Unit Drivetrain 6E0 45570 00 00 Overview When you start hearing noise or feeling vibration from the lower unit, gears are usually at the center of it. This assembly handles a lot of load every time youre on the throttle, and once wear sets in, it only gets worse. Ive torn down units where one worn gear ended up affecting everything around it. Replacing it with a proper assembly brings things back to smooth, dependable