Parts such as the Knuckle: Bolt,flange 14x91, Clip, Upr Arm, Boot,lwr Ball Fr, Lwr Arm Comp,r Fr are included in the Civic 2004 (4) 2dr Dx Side Srs (ka) Knuckle parts fiche.
In this schematic the "Bolt,flange 14x91" is used most often.
The Knuckle assembly is constructed from several parts from which the Knuckle Comp,r Fr is the most expensive.