The component with the lowest price in the WIRE HARNESS - IGNITION COIL schematic is the Screw,pan 6x25.
Some items from this specific schematic: Clamp,high/t Cord, Cord 3-3,high/t, Screw,pan 6x25, Guide,high/t Cord.
On this parts fiche the Cap Assy,noise Su is the most specified component.