| Item | Part number | Description | 
                        
                | 1 | 98464546 | CYLINDER HEAD ASSY | 
                            
                | 2 | 98416134 | WASHER  [from 555940] | 
                            
                | 3 | 1907838 | CYL.HEAD GASKET SP=1,58 MM | 
                            
                | 4 | 4796457 | CYL.HEAD STUD | 
                            
                | 5 | 4770859 | NOZZLE HOLDER SEAT | 
                            
                | 6 | 98418850 | CYL. HEAD COVER | 
                            
                | 7 | 4845138 | HEAD COVER GASKET | 
                            
                | 8 | 10519660 | WASHER Ø8X17 MM [up to 555939] | 
                            
                | 9 | 98417659 | NUT  [from 555940] | 
                            
                | 10 | 13517530 | STUD M8X12X45 | 
                            
                | 11 | 16991170 | LOCK PLUG Ø36 MM | 
                            
                | 12 | 16990870 | LOCK PLUG Ø28 MM | 
                            
                | 13 | 14282170 | LOCK PLUG Ø20 MM | 
                            
                | 14 | 16991370 | LOCK PLUG Ø45 MM | 
                            
                | 15 | 14323911 | LOCK PLUG M10X1,25 | 
                            
                | 16 | 14453981 | O-RING Ø25,12 MM SP=1,78 MM | 
                            
                | 17 | 16104111 | HEXAGON NUT M8 | 
                            
                | 18 | 4802126 | VALVE GUIDE | 
                            
                | 19 | 4802127 | VALVE GUIDE +0,2 | 
                            
                | 20 | 4818862 | WATER CONVEYOR | 
                            
                | 21 | 4846851 | SPIGOT SCREW | 
                            
                | 22 | 4639661 | SUPPORT RING SP=1 MM | 
                            
                | 23 | 4570798 | SUPPORT RING SP=0,7 MM | 
                            
                | 24 | 4570799 | SUPPORT RING SP=0,5 MM | 
                            
                | 25 | 4838844 | ROCKER SHAFT ASSY | 
                            
                | 26 | 4601295 | ROCKER BRACKET | 
                            
                | 28 | 4848973 | ROCKER ARM ASSY | 
                            
                | 29 | 4838680 | VALVE CAP | 
                            
                | 30 | 4780558 | SPRING CAP TOP | 
                            
                | 31 | 4812347 | ENGINE VALV.SPRING | 
                            
                | 32 | 4817424 | SPRING CAP BOTTOM | 
                            
                | 33 | 1908408 | INLET VALVE | 
                            
                | 34 | 1908409 | EXHAUST VALVE | 
                            
                | 35 | 4601296 | ROCKER ARM SPRING | 
                            
                | 36 | 11066676 | CIRCLIP Ø18 MM | 
                            
                | 37 | 17094901 | WASHER Ø8,4 MM | 
                            
                | 38 | 14196670 | VALVE CONE Ø7,85 MM | 
                            
                | 39 | 14328301 | LOCK PLUG Ø12 MM | 
                            
                | 40 | 16606424 | HEXAGON BOLT M8X65 MM | 
                            
                | 41 | 13516621 | STUD M8X16 MM | 
                            
                | 42 | 4338920 | ADJUSTING NUT | 
                            
                | 43 | 4699783 | ROCKER ARM SCREW | 
                            
                | 44 | 17037931 | HEXAGON NUT M8X1,25 | 
                            
                | 45 | 98495493 | VALVE SEAT STD. | 
                            
                | 46 | 98458149 | STUD  [from 608189] | 
                            
                | 47 | 4803955 | VALVE SEAT +0.20 | 
                            
                | 49 | 4808105 | WATER CONVEYOR  [up to 213981] | 
                            
                | 50 | 98427866 | HEAD COVER GASKET  [from 344746] |