CHEVY 348 409 Stock Exhaust Manifold Hex Bolt Kit

This an exhaust manifold kit for mounting stock manifolds to the heads on your Chevy 348 and 409 V-8 engines. This bolt set is for the standard engines and will not fit the 425 H.P. high performance exhaust manifolds. The bolts and 1/8 inch thick washers are 304 stainless steel. These bolts are not as strong as the stock bolts.