| Item | Part number | Description | 
                        
                | 1 | 504254092 | CYLINDER HEAD | 
                            
                | 2 | 504162949 | VALVE SEAT STD. | 
                            
                | 3 | 4749397 | VALVE GUIDE | 
                            
                | 4 | 4749398 | VALVE GUIDE +0.10 | 
                            
                | 5 | 4749399 | VALVE GUIDE +0,2 | 
                            
                | 6 | 504254094 | VALVE SEAT STD. | 
                            
                | 7 | 16988301 | LOCK PLUG Ø20 MM | 
                            
                | 8 | 504162958 | INLET VALVE | 
                            
                | 9 | 504162959 | EXHAUST VALVE | 
                            
                | 10 | 504178119 | SPRING CAP | 
                            
                | 11 | 4812347 | ENGINE VALV.SPRING | 
                            
                | 12 | 4780558 | SPRING CAP TOP | 
                            
                | 13 | 40101574 | CAP | 
                            
                | 14 | 14196670 | VALVE CONE Ø7,85 MM | 
                            
                | 15 | 504081521 | HEXAGON BOLT M15X1,5X193 MM | 
                            
                | 16 | 504081533 | HEXAGON BOLT M12X1,5X165 MM | 
                            
                | 17 | 504190831 | CYL.HEAD GASKET | 
                            
                | 18 | 4838680 | VALVE CAP | 
                            
                | 19 | 99435557 | DOWEL PIN Ø8,5 MM | 
                            
                | 20 | 17281481 | O-RING Ø10,7 MM SP=2,6 MM | 
                            
                | 21 | 8099020 | CYLINDER HEAD with elements (valves, springs...) | 
                            
                | 22 | 500380521 | STUD M8X12X45 |