OER Parts offers a wide selection of Manifold Hardware for your 1973 Chevrolet El Camino. OER Parts offers 1973 Chevrolet El Camino Bolts, 1973 Chevrolet El Camino Exhaust Flanges, 1973 Chevrolet El Camino Extension Pipes, 1973 Chevrolet El Camino Header & Exhaust Manifold Paint, 1973 Chevrolet El Camino Header & Exhaust Manifold Wraps & Blankets, and 1973 Chevrolet El Camino Heat Risers.