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ARP hex-drive header stud kit for Buick 350–455 applications using 3/8in hardware. The kit supplies direct-fit hex studs intended for header or manifold attachment, making exhaust assembly and maintenance cleaner and more secure on the specified Buick displacements. It’s offered as an application-specific replacement to restore correct fastener fit when servicing exhaust systems.
ARP Buick 350-455 3/8in hex header stud kit
