MTD Half Pulley No. 956-04160. This is an original equipment half pulley. Size Key 25mm x 2.62 OD. Replaces part numbers 95604160, 956 04160, 756-04160, 756 04160 and 75604160
MTD Idler Pulley Kit No. 753-08171. This is a quality aftermarket part. Inside Diameter 3/8, Outside diameter 4 7/8, width is 1" Replaces MTD part numbers 753-08171, 756-04129, 753-08068, 756-04129B, 753-04129C and Toro part number 112-0314.
MTD Pulley Kit No. 753-0518. This is an original mtd part that includes the pulley, bearing, shoulder bolt and assiciated hardware. Replaces mtd part number 7530518.