1+ Solenoid valve  
2+ Crankshaft position sensor  
3+ Air temperature sensor  
4+ Oil pressure switch  
5+ Coolant temperature sensor  
6+ Temperature sensor  
7+ Camshaft position sensor  
8+ Knock sensor  
9+ Stud  
10+ Nut  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.