The component with the lowest price in the EXHAUST MANIFOLD (VTEC) schematic is the Nut,flange,8mm.
This Exhaust Manifold (vtec) diagram displays the required parts for the Civic 2003 (3) 4dr Ex (ka) Exhaust Manifold (vtec).
In this schematic the "Nut,flange,8mm" is used most often.