This is a A-3617649M91 Disc, Brake PN: 3617649M91Main Description As Following : A-3617649M91 Disc, Brake P.N: 3617649M91 Inside Diameter: Major: 3.340" / Minor: 2.764"Outside Diameter: 13.500"Teeth: 14Thickness: .082" Crossed From: 1202-2013 , , 1602-2013 , Found in Section & Models : Transmission & Rear Axle > Brake Disc and Plates, Massey Ferguson TRACTOR: 3670, Massey Ferguson TRACTOR: 3690, Massey Ferguson TRACTOR: 6485, Massey Ferguson TRACTOR: 6490, Massey Ferguson TRACTOR: 6495, Massey Ferguson TRACTOR: 6497, Massey Ferguson TRACTOR: 6499, Massey Ferguson TRACTOR: 8150, Massey Ferguson TRACTOR: 8160, Massey Ferguson TRACTOR: 8210, Massey Ferguson TRACTOR: 8220, Massey Ferguson TRACTOR: 8240, Massey Ferguson TRACTOR: 8245, Massey Ferguson TRACTOR: 8250, Massey Ferguson TRACTOR: 8260 Associated Items : New Also This is An Aftermarket Product And : Inside Diameter: Major: 3.340" / Minor: 2.764" Outside Diameter: 13.500" Teeth: 14 Thickness: .082"