V-Belt Type D BB129 for John Deere Mowers M142997 M163991 5/8″x129″. Made to OEM Specs To Provide A Direct Fitment & Easy Install! Manufactured With High Grade Materials By an Industry Leader. M142997, M163991, 265-309, BB 129. John Deere: 2210, 2305, X465, X475, X485, X495, X575, X585, X595, X700, X724, X728, X740, X744, X748 – Sabre: (No specific models listed). Type D Dimensions BB 129 5/8″ x 129″ 17 x 3277 Li Fig.