MSV Racing CR500 Exhaust Manifold O-Rings

4 CR500 high-temp FKM Exhaust Manifold O-Rings for your MSV Racing CR500 Exhaust Manifold. We have switched over to FKM O-rings which offer better high-temp durability, petroleum product resistance and higher durometer to make these an all around tougher O-rings for your MSV Racing CR500 Exhaust manifolds.