The component with the lowest price in the CYLINDER/CYLINDER HEAD schematic is the Bolt,stud 6x28.
Parts such as the Cylinder/cylinder Head: Spark Plug W14fr-, Bolt,stud 6x28, Spark Plug (br4hs, Bolt,flange,6x95 are included in the Sfx50 1998 (w) England Cylinder/cylinder Head parts fiche.
The Sfx50 1998 (w) England Cylinder/cylinder Head consists of twelve pieces with the Cylinder B being the most expensive.