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ARP Big-Block Chevy main stud kit for Merlin X and other aluminum blocks with four-bolt mains. The kit is specified for BB Chevy and WP Merlin X aluminum-block applications, providing main studs to secure crank main caps during assembly or rebuild. It’s intended as a direct fastener solution where aluminum-block fitment and four-bolt main configuration are present.
ARP BB Chevy/WP Merlin X alum block - Main Stud Kit
