Please Carefully Check All Pictures and Part Numbers in the Listing to Make Sure It's the Correct Product you Need Part Number: Compatible With Toro 121-9178 115-4652 Application: Compatible with Toro Recycler 22 Rear Bagger Walk Behind Mower (SN 290000001-999999999) 2009-2016 Compatible with Toro Recycler 22 Rear Bagger BBC Walk Behind Mower (SN 290000001-999999999) 2009-2016 Product Parameter: Pulley Outer Diameter-2.28 in, Pulley Inner Diameter-1.09 in, Pulley Height-0.57 in; Input Shaft Spline Count: Thread, Non-splined Package Included: 1 X Transmission Axle Assembly