This is a A-AL157593 Pulley, Belt Idler PN: AL157593Main Description As Following : A-AL157593 Pulley, Belt Idler PN: AL157593 Found in Section & Models : Tractor Parts Associated Items : A-AL112300 Also A-JD-O-OMR51902, A-JD-S-TM1053 And : Inside Diameter: .669" Outside Diameter: 3.069" Replaces: AL116369 Width: 1.121"