Pemnture Exhaust Manifold Header Flanged Bolts Corrosion Resistant Hardware Kit Fits 03413B 11518860 for Buick, Cadillac, Chevy, Chrysler, Dodge, Jeep, and More. Premium Material - This Exhaust Manifold Fitting Flange Bolt Corrosion Resistant Hardware Kit is made from premium materials and is designed for improved performance and long life.