The component with the lowest price in the F-15 SIDE COVER-BATTERY schematic is the Bolt,flange,6x10.
The sub assemblies and components that make up this F-15 Side Cover-battery include this Rectifier,reg., the most expensive part.
This part-list fiche shows all the components that make up the Xl600r 1984 (e) F-15 Side Cover-battery .