1+ Heater feed hose  
2+ Heater return hose  
3+ Hose clamp  
4+ Heater feed pipe  
5+ Screw  
6+ 3 way connector  
7+ Heater return hose  
8+ Hose  

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.