John Deere 46 Snow Blower Driveshaft AM39885Fits JD 420 Tractors (maybe others). This driveshaft fits the 46 snowblower typically used on the John Deere 420 tractor (and others). The driveshaft is 8-¼” total length, has the 1″-15 spline PTO yoke and a keyed 1 shaft yoke for the snow blower. I have also built.