KTA38 Cummins Main Bearing Kit AR12250 Parts Catalog Ref No. Part Name Part No. Required 　 Main Bearing Kit AR12250 1 6 Main Bearing       3650915 5 7 Main Bearing       3650905 5 8 Main Bearing       3650920 2 9 Main Bearing       3650910 2 10 Thrust Bearing       3000139 2 　 　 　 　 　 Main Bearing Kit AR12251 A/R 6 Main Bearing       206581 …