Overview Multi-Layered Steel (MLS) exhaust and header collector gaskets are designed for extreme cylinder pressures produced by high horsepower high compression turbo-charged, supercharged and nitrous oxide injected engines. | Manufactured from three stainless steel layers, they resist corrosion, will not burn through or push out and maintain 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 extreme exhaust pressures. Total gasket thickness .075 inch. | Will not deteriorate from scrubbing action caused by different expansion rates in aluminum and steel materials. Note: Does not Fit LS7 & LS9 Features Multi Layer Stainless Steel 3-Layers Round Port 1.75" Diameter Will not deteriorate from scrubbing action caused by different expansion rates in aluminum and steel materials. Thickness .072" Fits GM LS Series Engines 1997-'15
