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Moroso header bolts sized 3/8in-16 by 1in are offered in a 12-point configuration for GM BBC and SBC engines. These bolts are intended for header and exhaust flange fastening where the specified thread and length match factory or aftermarket header designs for Big Block and Small Block Chevrolet applications.
Moroso GM BBC/SBC 3/8in-16 1in Long 12pt Header Bolts
