| Harmonised Commodity Description and Coding System (HS) - level 2 - Chapter | 
                    84 | 
                    Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof | 
                  
                
                  
                    | Harmonised Commodity Description and Coding System (HS) - level 4 - Article | 
                    840910 | 
                    Parts suitable for use solely or principally with internal combustion piston engine for aircraft, n.e.s. | 
                  
                
                  
                    | Harmonised Commodity Description and Coding System (HS) - level 4 - Article | 
                    840991 | 
                    Parts suitable for use solely or principally with spark-ignition internal combustion piston engine, n.e.s. | 
                  
                
                  
                    | Harmonised Commodity Description and Coding System (HS) - level 4 - Article | 
                    840999 | 
                    Parts suitable for use solely or principally with compression-ignition internal combustion piston engine "diesel or semi-diesel engine", n.e.s. |