One New Aftermarket Replacement Synchronizer Blocker Fits John Deere Tractors and SkiddersThis synchronizer blocker is used in the Fits John Deere Synchro Range transmission, engaging the low and high range gears during shifting. It is a direct replacement for OEM part number R31028 and fits a wide range of Fits John Deere agricultural tractors, industrial machines, and skidders equipped with the Synchro Range gearbox.Important Serial Number Restrictions: This part fits the 4030 Syncro Range up to S/N 015963, the 4230 Syncro and Quad Range up to S/N 037595, and the 4430 Syncro Range up to S/N 066737. The 2010 fits up to ASN 42001. Verify your serial number before ordering.Specifications Application: Low and High Range synchronizer blocker Transmission Type: Fits John Deere Synchro Range Compatible ModelsFits John Deere Tractors: 2010 (up to ASN 42001), 2510, 2520, 3010, 3020, 4000, 4010, 4020, 4030 (Syncro Range, up to S/N 015963), 4230 (Syncro and Quad Range, up to S/N 037595), 4320, 4430 (Syncro Range, up to S/N 066737)Fits John Deere Skidders and Industrial: 340D, 440, 440A, 440B, 440D (all Syncro Range), 448D (all Syncro Range), 640D (Syncro)Replaces Part Number(s):R31028, R31028-ANew aftermarket replacement part - not remanufactured, not used.
