On this parts fiche the Bolt,5/16-18x1" Zn is the most specified component.
Parts such as the Water Pump: Clamp #16, Washer,lock Md5/16, Clamp #20, Bolt,5/16-18x1" Zn are included in the V8 5.7 Yems 1990 Engine Water Pump parts fiche.
The most reasonably priced component used on the V8 5.7 Yems 1990 Engine Water Pump is the Washer,lock Md5/16.
