LS Hex Bolt Kit 3/8" Header Fasteners

The ARP GM LS Hex Bolt Kit for 3/8" Wide Flange Headers (part number 134-1102) provides a durable and strong solution for attaching exhaust headers to GM LS engines. These high-performance bolts are made from premium grade 8740 Chromemoly steel, significantly surpassing the strength of original equipment fasteners. With a tensile strength of 180,000 psi, these bolts are engineered to withstand severe conditions and ensure a reliable seal for your exhaust system. The kit features a 10mm hex head style for easy installation and includes the necessary washers. The bolts have an underhead length (UHL) of 1.181 inches (30.00mm) and a thread size of M8 x 1.25. This kit is specifically designed for applications requiring 3/8" wide flange headers. It is compatible with a wide range of GM LS-based vehicles, including various Chevrolet Corvette models (1997-2013, including Z06 and ZR1 variants), Chevrolet Camaro models (1998-2015, including Z/28, SS, and ZL1, with a note for manual-only SS models), Pontiac Firebird and GTO models, Cadillac CTS-V series vehicles, and several Holden and HSV models. The kit includes 12 bolts, providing a complete set for header installation. These ARP bolts offer enhanced strength and longevity, ensuring that your headers remain securely attached even under demanding driving conditions.