Stainless Steel Header Bolts for LS Engine Swaps
From the first turn of a socket on an LS swap, these Stainless Steel Header Bolts secure split flange headers with consistent clamp force through every heat cycle. Crafted from 300 series stainless steel they resist corrosion when exhaust temperatures soar and road salts take their toll. With twelve point heads installers gain fine torque control that minimizes tool slippage in cramped engine bays. The precision machined flange underside spreads load evenly across the split flange surface while each bolt threads smoothly into LS header flanges matching OE patterns for consistent engagement and a reliable seal without additional hardware.
Heat Resistance of 300 Series Stainless Steel
The 300 series stainless steel alloy used in these header bolts combines chromium and nickel to form a stable oxide layer that endures temperatures above 500 °F without scaling. This corrosion barrier preserves the integrity of each thread, preventing galling or seizing even after hundreds of heat cycles. In environments exposed to road salt or humidity, the material's inherent resistance stops rust from undermining clamp force at the split flange. Technicians will find removal and reinstallation remain effortless over many service intervals, reducing time spent battling frozen fasteners. Overall, this composition supports a reliable exhaust seal under constant thermal stress.
Twelve Point Head Geometry for Precision Torque Control
Each bolt head features twelve distinct engagement surfaces, doubling the contact points compared to a standard six face design. This geometry allows installers to apply torque in finer increments, which is critical in cramped engine bays where slippage can damage the flange face. With more surfaces to grip, the head resists rounding under repeated use and high torque settings. Even load distribution across the bolt head reduces localized pressure points that could distort the flange or impair sealing. Precise torque control ensures the split flange ports draw together evenly, maintaining consistent backpressure and engine performance.
Integrated Flange Underside Ensuring Uniform Load Distribution
A precision machined flange underside seats perfectly against the header surface, eliminating the need for separate washers or adhesives. CNC accuracy aligns the bolt's contact area with the split flange perimeter, spreading clamp force evenly across the joint. As the engine vibrates and heats, the integrated design prevents loosening by maintaining constant pressure on the flange faces. This even clamp distribution reduces the risk of leaks that can lead to sensor errors or power loss. By preserving seal integrity, these bolts cut maintenance intervals and extend overall exhaust system life.
Precision Fitment to LS Split Flange Headers
Designed exclusively for LS engine swaps, the bolts use a 13mm head profile that engages standard sockets and open adapters without special tooling. Thread pitch and shank diameter match OEM header flanges exactly to prevent cross threading and ensure full engagement of every turn. This accurate fit speeds installation, especially in tight engine compartments where access is limited. Smooth threading and consistent draw down eliminate uneven clamp points that can warp mating surfaces. Whether in a professional garage or a home workshop, these fasteners deliver a dependable seal that stands up to heat, vibration, and repeated service cycles.
Engineered for precise fit and enduring performance in LS swaps.