100-1110 Header Bolt Kit, 16PCS 3/8” x 1.000” Hex Head Header Bolts with Washers, 8740 Chrome Moly Steel Black Oxide Exhaust Header Bolts for LS SBC Engines

Upgrade your engine’s exhaust integrity with 100-1110 Header Bolt Kit replacement —the gold standard trusted by pro racers, builders, and enthusiasts worldwide. These aren’t just bolts—they’re engineered stress relievers. Unlike off-the-shelf hardware, these bolts deliver unmatched thermal stability and fatigue resistance—critical when headers cycle between 200°F and 1,200°F repeatedly. The oxide finish resists rust and looks factory-fresh under the hood, while the precise 1.000" under-head length ensures perfect gasket compression—even on warped or ported manifolds. Whether you're building a weekend cruiser, a track-ready swap, or a show-stopping build, this 16-piece kit gives you the confidence that every bolt is doing its job: holding tight, so your power doesn’t leak away.

• Replacement Header Bolt Kit:Compatible replacement for 100-1110 header bolt kit. Designed for LS, SBC and performance exhaust header installations where 3/8” x 1.000” hex head header bolts are required. Please verify size and application before purchase.
• 3/8” x 1.000” Size:Each bolt features a 3/8” diameter and 1.000” under-head length for consistent fitment and clamping. Ideal for replacing worn, missing, or rusted exhaust header bolts during engine or header service.
• 8740 Chrome Moly Steel:Made from 8740 chrome moly steel for high strength and durability under demanding exhaust conditions. Designed to help resist stretching and maintain secure fastening during repeated heat cycles.
• Black Oxide Finish & Hex Head Design：Black oxide finish provides a clean performance look and added surface protection. Classic hex head design allows easy installation, strong tool engagement, and reliable torque control.
• 16 Bolts with Hardened Washers Package includes 16 header bolts and 16 hardened washers for even load distribution. This is an aftermarket replacement kit, not an OEM part. Always follow proper torque specifications during installation.