OER Parts offers a wide selection of Manifold Hardware for your 1957 Chevrolet All Models. OER Parts offers 1957 Chevrolet All Models Bolts, 1957 Chevrolet All Models Exhaust Flanges, 1957 Chevrolet All Models Extension Pipes, 1957 Chevrolet All Models Header & Exhaust Manifold Paint, 1957 Chevrolet All Models Header & Exhaust Manifold Wraps & Blankets, and 1957 Chevrolet All Models Heat Risers.