0+ (Unillustrated Parts)  
1+ Duct  
2+ Footwell duct  
3+ Intermediate footwell duct  
4+ Push on fix  
5+ Final footwell duct  
6+ Captive nut  
7+ Fixing button  

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.