These ARP 12-point exhaust bolts are specified for Big Block Chevy Late Bowtie and Dart Merlin exhaust applications. Sold as the 12-point broached bolt option, they are intended as direct replacement hardware where the listed fastener specification is required for exhaust flange or manifold reassembly in compatible BB Chevy installations.
ARP BB Chevy Late Bowtie/Dart Merlin 12pt Exhaust BOLTS ONLY