3.5" Header Collector Gaskets Copper Gaskets Exhaust Header Headers Pair 3-1/2"

Upgrade your vehicle’s exhaust system with PERRIN’s precision-engineered 3.5-inch copper header collector gaskets! Designed for Ch evy SBC/BBC 302 350 V8 engines, these gaskets deliver exceptional thermal stability and leak-free sealing. Crafted from premium copper, they withstand temperatures up to 500°C (melting point 1083°C) and adapt seamlessly to flange surfaces, eliminating exhaust leaks caused by uneven gaps. The reusable design ensures long-term durability, while the 2-bolt flange compatibility simplifies installation for DIY enthusiasts. Ideal for headers, turbo downpipes, and catalytic converter connections, these gaskets are a must-have for restoring peak engine efficiency and reducing cabin noise. Join thousands of satisfied users who trust PERRIN for reliable, high-performance automotive solutions!

• Extreme Heat Resistance & Sealing​​---Copper material withstands 500°C+ temperatures and high-pressure exhaust gases, preventing leaks and corrosion. Softened annealing ensures a conforming seal on warped flanges.
• Precision Fit for Ch evy V8 Engines---​​Optimized for 3.5" (88.9mm) header collectors on Chevy Small Block (SBC) 302/350ci and Big Block (BBC) 454ci engines. Bolt holes align with OEM flanges for plug-and-play installation.​​
• Reinforced Durability & Reusability​​---Unlike fiber or graphite gaskets, copper maintains integrity after multiple thermal cycles. No cracking or crumbling—ideal for high-vibration environments.
• Broad Compatibility​​----Works with aftermarket headers, stock manifolds, and turbo setups. Fits vehicles like Silv era do, Sie rra, Subu rban (1967–2002 models), and compatible with 2-bolt flange systems.
• Effortless Installation & Eco-Safe----​​Pre-cut bolt holes and uniform thickness (2–3.5mm) enable quick assembly. 100% asbestos-free copper ensures environmental safety.​​