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ARP 12-point head stud kit for Big-Block Chevy Dart Pro1 heads with a 20-degree seat specification noted in the source. The kit provides 12-point studs sized to secure Dart Pro1 20-degree heads to compatible BB Chevy blocks, intended for engine builds or head swaps that require this specific 20-degree head-seat fastener configuration. It’s supplied as the matching stud set.
ARP BB Chevy Dart Pro1 Dart 20-deg 12pt head stud kit
