Coil Bracket Bolt Kit - 12pt. LS1/LS2

The ARP Coil Bracket Bolt Kit - 12pt. LS1/LS2 (SKU: ARP134-2301) is a precision fastener assembly engineered for General Motors LS-series engine platforms. This kit delivers OEM-specification coil bracket mounting with chromoly construction and black oxide finish, designed to withstand the thermal cycling and vibration demands of high-performance and stock LS engines alike. The 12-point head design provides superior grip geometry and reduces fastener rounding during installation and maintenance cycles.

Chromoly fasteners offer significantly higher tensile strength and fatigue resistance compared to standard steel, critical for engine bay applications where temperature fluctuations and mechanical stress are constant. The black oxide finish provides corrosion resistance in moisture-prone environments while maintaining the low-friction properties necessary for proper torque-to-yield behavior. This kit includes washers, ensuring correct load distribution across the coil pack mounting surface and eliminating stress concentration points that lead to premature loosening or stripped threads.

The LS1/LS2 platform remains the foundation for both stock and modified engine builds across street, drag, and race applications. Whether rebuilding a factory engine bay or upgrading fasteners during a performance refresh, this OEM-specification kit eliminates guesswork and delivers consistent clamping force without risk of thread damage or fastener failure. Operators running 5.3L, 5.7L, 6.0L, and 6.2L variants rely on ARP fastener engineering to maintain ignition coil security and electrical integrity over extended service intervals.