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This ARP lower pulley bolt kit for SB/BB Chevy includes 3/8-24 12-point bolts specified for small-block and big-block Chevrolet lower pulleys. Packaged as a pulley hardware kit, it provides the correct thread and 12pt head geometry required for secure attachment. Use it when replacing lower pulley bolts or during engine work that calls for those specific Chevy fasteners.
ARP SB/BB Chevy 3/8-24 12pt lower pulley bolt kit
