Primary and Secondary Pulley Kit with Belt MIA13031 MIA12482 for John Deere D105 E100 X105 X106 Primary and Secondary Pulley Kit with Belt.Listing includes John Deere MIA13031 and MIA12482. Fits John Deere models D105 E100 X105 X106.Replace Part Number:MIA12481,MIA13031,GT79398,GT79244 This listing includes BOTH kits listed below:1) MIA13031 Driver Kit / Primary Pulley fits RT400 General Transmission replaces John Deere MIA13031. Fits General Transmission RT400 (John Deere Transmission AUC11077 which subs for AUC10266, MIA13114, MIA12863 OR MIA12656) alt GT79398.2) MIA12482 Secondary Transmission Variator Pulley Kit alt GT79244.Applications:Fit For John Deere Lawn And Graden Tractor:31G777, D105, E100, X105, X106