OER Parts offers a wide selection of Manifold Hardware for your Chevrolet K20 Pickup. OER Parts offers Chevrolet K20 Pickup Bolts, Chevrolet K20 Pickup Exhaust Flanges, Chevrolet K20 Pickup Extension Pipes, Chevrolet K20 Pickup Header & Exhaust Manifold Paint, Chevrolet K20 Pickup Header & Exhaust Manifold Wraps & Blankets, and Chevrolet K20 Pickup Heat Risers.