The Yamaha EXHAUST SYSTEM has twenty-three products enlisted in the schematic.
Parts such as the Exhaust System: Adapter,exh Mixing, Bolt,3/8-16x5-1/2", Draincock,eng.blok, Hose,4" Exhaust are included in the V6 4.3 Stern Drive Engine 1990 Exhaust System parts fiche.
This EXHAUST SYSTEM assembly utilises eight Bolt,3/8-16x5-1/2"(s) - the highest specified component.
