Yamaha - Lower unit assemblies - VF250 - 6FR-45300-03-NA See Description For Applicable ModelsYamaha Lower Unit Assembly Complete Drivetrain Assembly VF250 6FR 45300 03 NA Overview The Yamaha Lower Unit Assembly 6FR 45300 03 NA is what takes all that power from your engine and actually puts it into the water where it counts. When a lower unit starts going bad, youll feel it right awaynoise, vibration, or loss of push at the prop. Instead of chasing internal damage piece by piece, replacing the full unit is usually the cleanest and most