0+ (Unillustrated Parts)  
1+ Forward heatshield  
2+ Bulkhead heatshield  
3+ Insulation pad  
4+ Bulkhead heatshield  
5+ Under floor heatshield  
6+ Under floor heatshield  
7+ Over axle heatshield  

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.