Hole Diameter: 2.5″, Bolt Circle: 3.5″, Bolt Hole: 3/8″ 3 bolt hole. Multi-Layered Steel (MLS) header collector gaskets are designed for extreme cylinder pressure produced by high horsepower-high compression turbo-charged, supercharged & nitrous oxide engines. Manufactured from three stainless steel layers, resists corrosion, will not burn through or push out & maintains maximum fastener torque retention. Stress formed inner and outer layer embossments act like springs that rebound under exhaust flange clamp load. Applications: Dynomax, Flowtech, Hedman, Hooker Headers, etc..
Limited 90 Day
This part is legal for use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it has a California Air Resources Board Executive Order number or is a direct or consolidated replacement part.
The following vehicles are considered Emissions Controlled Vehicles:
1966 and newer U.S. manufactured California Certified vehicles
1968 and newer U.S. manufactured Federally Certified vehicles