1+ Auxiliary heater assembly  
2+ Hose clamp  
3+ Exhaust silencer  
4+ Water hose  
5+ Water hose  
6+ Pipe clip  
7+ Fuel feed hose  
8+ Pipe clip  
9+ Mounting bracket  
10+ Hose  
11+ Intake tube  
12+ Heater  
13+ Mounting bracket  

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.