Big Block Chevy Square Port SS Exhaust Gaskets 

• Multi-Layered Steel (MLS) Marine Exhaust Gaskets are designed for extreme duty applications as well as high cylinder pressures produced by high horsepower applications. Perfect for high compression, super-charged, or turbo-charged,engines.
  
• Manufactured from three 304 stainless steel layers, resists corrosion, will not burn through or push out and maintains maximum fastener torque retention
• Stress formed inner and outer layer embossments act like springs that rebound under exhaust flange clamp load, creating force to seal excessive exhaust pressure produced from cylinder heads
• Withstands different combination's of cylinder head (aluminum) and exhaust header or manifold (steel) materials, will not deteriorate from scrubbing action caused by different expansion rates in aluminum and steel material

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