Header Flanges: AJ 481-X & AJ Olds Stg II – IV (not Olds Stg I Billet heads) for 2.500″ primary tube. 3/8″ thick mild steel. (sold in pairs)
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481-X Header Gaskets – Copper Embossed, fits 481-X & AJ Olds Stg II – IV (not AJ Olds Stg I Billet heads!) (sold as pairs)
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Exhaust Header Step Stud + Nut kit, for 481-X. Includes 16ea 3/8 x 5/16″ Stepped header studs + 16ea 5/16 12pt nuts. (kit)
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SBC Billet Header Flanges, for 2.250″ primary tube. 3/8″ thick mild steel. (sold in pairs)
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Muscle Head Stg IV + V Header Flanges, 3/8″ thick waterjet cut 304 Stainless steel. (pair)
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