This is the latest updated oem motor from husqvarna:New storage solutionImproved grease solutionImprove lubrication and harder gears.Metal wheel recording (no more plastic.) Stable. (grey metal holder)Genuine Husqvarna 420, 430X, 430X, 435X AWD, 440, 450, 520, 535, 550 Wheel Motor Drive(Labeled..