A sample from the products for the Crankcase Bolt Pattern include: Bolt-flanged, Bolt,6x40, Bolt-flanged, Bolt,6x80.
This Bolt-flanged is the most expensive of the items that make up this Crankcase Bolt Pattern assembly.
The most reasonably priced component used on the En450a4 454ltd 1988 Usa California Canada Crankcase Bolt Pattern is the Bolt,6x40.