Stainless Steel Header Bolts for LS Engine Swaps
When you drop an LS motor into your ride, every fastener on the exhaust flange must resist heat and vibration. Stainless Steel Header Bolts are machined from 300 series stainless steel to preserve clamping force across thousands of heat cycles and fend off corrosion in road salt or humidity. The 12 point head design offers precise torque application every thirty degrees in cramped engine bays where header clearance is limited. Integrated flanges spread load evenly and resist loosening so your split flange headers stay sealed under constant vibration.
300 Series Stainless Steel for Heat and Corrosion Defense
These header bolts use 300 series stainless steel known for its high chromium content and fine grain structure, allowing them to resist oxidation and scaling when exhaust temperatures climb above 500°F. In real world conditions, this alloy maintains clamp force over thousands of heat cycles and stands up to road salt or humidity without seizing. The corrosion resistance ensures that the fasteners remain serviceable without destructive removal methods, cutting down on maintenance time and expense. By preserving both strength and thread integrity, they deliver reliable performance on street cars and track machines alike.
Twelve Point Head Geometry for Accurate Torque Control
The twelve point bolt head offers twice as many engagement surfaces as a standard hex, letting installers apply torque at 30-degree increments instead of 60. This finer degree of rotation reduces the risk of rounding, especially in tight engine bays around LS exhaust ports. Precise torque application is critical to achieving an even seal on split flange headers and avoiding exhaust leaks that can harm performance and emissions. With improved access and consistent clamp load, you gain confidence in every fastening step.
Machined Flange and Thread Precision for Vibration Security
Each bolt is CNC machined to strict tolerances, guaranteeing straight threads and uniform head seating to prevent misalignment during installation. The integrated flange under the head spreads the load evenly across the split flange surface, removing stress concentrations that could loosen under constant vibration. This precise fit means there is no need for extra locking compounds or washers, as the combination of flat mating surfaces and tight thread clearances locks the fastener in place throughout repeated thermal expansion and contraction cycles.
Tailored Fitment for LS Split Flange Header Installation
With a 13 mm head that matches standard socket tools and the correct shank diameter plus thread pitch for LS split flange patterns, these bolts slide in smoothly without adapters. The exacting alignment reduces the chance of cross threading and ensures uniform draw down across all ports. Whether you are a professional shop or a dedicated enthusiast, this hardware speeds up the installation process and frees you to focus on tuning rather than chasing leaky header flanges. It's a simple upgrade that pays dividends in reliability.
Engineered for precise fit and reliable sealing on every LS header installation.