Bearing set - for Norton upright , Norton laydown and AMC laydown gearboxes including Commando (set of 3). Branded bearings either Japanese or Korean. Original Part Number: 9664; A2/316; 040098; 040298 - Norton Main gear wheel bearing x 1 9668; B2/322; 040100; 067710 - Layshaft left hand bearing x 1 9667; A2/321; 040099 - Norton Mainshaft right hand bearing x 1