Key Features: Exhaust Manifold / Header Gasket - 3 Port - 1-7/8 x 1-1/2 in Square Port - 0.125 in Thick - Graphite - Cadillac V8 1956-57 - Pair. AMCO AUTO PARTS, LLC. Back to top. State Restrictions. WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
