Ideal replacement - the manifold bolt and spring match the fit and function of the original equipment hardware, including bolt diameter, thread pitch and head type Complete installation - this kit includes hardware required for securely attaching the manifold to the exhaust system Trustworthy construction - the kit's bolt and spring are made of hardened steel for durable, long-lasting service life Quality tested - kit components have undergone extensive testing to ensure proper function and long service life Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool