Of all the components that make up this E-10 Crankcase the Bolt, Hex., 6x55 has the lowest price.
Some items from this specific schematic: Cap,hole, Pin,knock 10x14, O,ring.3,ox35, Washer,plug,drain 12.
The E-10 Crankcase assembly is constructed from several parts from which the Crankcase,l. is the most expensive.