Core plug set to suit Kubota 5 Cylinder F2503 & F2803 Engine . 
 
Head Core Plug Set consits of :   15 x 24mm plug,  1 x 35mm plugs  Jem Part No CP17
Block Core Plug Set consits of: 8 x 32mm , 2 x 45mm plugs.  Jem Part No CP18