LS3 Exhaust Manifold Flanges Stainless Steel


These exhaust manifold flanges are made in the USA from 304 stainless steel for corrosion resistance. They're 3/8″ thick for protection against warping. The holes are tapped for a 7/16″-20 bolt for easy installation from above. They are available in 2.25″ or 2.5″. Contact us if you need a different size hole.

NOTE: If your manifolds have studs in them, you can either drill out our threaded holes, or remove the stud.
These flanges have a 3.75″ center-to-center dimension. If yours are 4.60″ please call to order.

Uses ROL gasket number EG24685 or equivalent, for all hole sizes. Not included.



These stainless steel flanges will ease the fabrication of your exhaust system when using Camaro and Pontiac G8 LS3 or Cadillac LSA exhaust manifolds. Sold as a pair.