LS Exhaust Manifold/Head er Hex Flange Bolts

The LS Exhaust Manifold/Header Hex Flange Bolts by ICT Billet are high-quality fasteners designed specifically for LS engine swaps and high-performance exhaust system installations. These bolts are ideal for those upgrading from stock manifolds to performance headers or securing custom exhaust manifolds in LS-powered vehicles.

The hex flange design of these bolts combines a traditional hex head with an integrated flange shoulder, which helps distribute clamping load across a wider surface area. This design reduces the risk of gasket crushing or fastener pull-through, ensuring a reliable seal. Manufactured to tight tolerances, these fasteners provide consistent thread engagement, which is critical when working with materials that experience thermal cycling and vibration.

Engine builders, LS swap enthusiasts, and performance shops trust ICT Billet hex flange bolts for securing Gen III, Gen IV, and Gen V LS manifolds and headers during both initial assembly and rebuild service. Their compatibility with OEM and aftermarket bolt patterns ensures proper sealing without the need for modifications, making them a preferred choice for serious builders.