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The ARP Pro-Series 12-point head stud kit for early Chevy LS1 engines (up to 2003) supplies upgraded studs intended for high‑duty or performance builds. These kits replace OE head fasteners with stronger hardware to improve clamping security during assembly and under increased cylinder pressures. ARP head stud kits are sold as application-specific sets to match target engines.
ARP Up to 03 Chevy LS1 Pro-Series 12pt Head Stud Kit
