One New Aftermarket Replacement Unloading Auger Drive Sprocket Fits Case IH (Fits Case-IH) CombinesThis grain tank unloader drive sprocket is a direct replacement for the unloading auger drive system on Fits Case IH and Fits International Harvester combines. It drives the grain tank unloading auger for fast, efficient grain transfer from the combine's holding tank.Specifications 49 Tooth Outside Diameter: 8.09" Inside Diameter: 1.00" For Size 40 Chain Compatible ModelsFits Case IH Combines: 1460, 1480, 1482, 1620 (ASN JJC0032630 and later), 1640 (ASN JJC0034705 and later / S/N 35422 and later), 1644, 1660 (ASN JJC0038346 and later / S/N 102897 and later), 1666, 1670 (ASN JJC0080540 and later / S/N 80540 and later), 1680 (ASN JJC0045689 and later / S/N 115352 and later), 2188, 2388 (SN HAJ292001-HAJ300000), 2588Fits International Harvester (IH / Fits International Harvester) Combines: 1482Replaces Part Number(s):187331C1, 187331C1-AAftermarket Interchange NumbersAM187331C1 (Abilene Machine)New aftermarket replacement part - not remanufactured, not used.