Mr Gasket 917 Header Bolts Hex Head 3/8"-16 x 1" 12 pc.

When installing headers you will need header bolts, factory exhaust manifold bolts won't work. These Mr. Gasket Header Bolts are Grade 5 for strength, black oxide coated, and have a compact hex head that is ideal for use where space is minimal - your typical header flanges.\nSold as a set of 12.\nFits:\nAMC 290-401\nChevy Small Block 262-400\nChrysler Big Block 383-440 (Does not Fit 426 Hemi)\nPontiac 326-455\nOldsmobile 330-455