Check out any of the six Exhaust Manifold (sohc Vtec) components enlisted.
Some items from this specific schematic: Mnfld Comp,exh, Gskt,exh Mnfld (nas), Bolt,flange,8x22, Bolt,flange,8x12.
The Nut,flange,8mm is the lowest priced item on this Exhaust Manifold (sohc Vtec) schematic.