0+ (Unillustrated Parts)  
1+ Seat squab  
2+ Squab cover  
3+ Seat cushion  
4+ Cushion cover  
5+ Headrest  
6+ Side bolster  
7+ Headrest escutcheon  

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.