Overtake Exhaust Manifold to Head Gasket SetOvertake Exhaust Manifold to Head Gasket Be Done With Leaks Looking for a Subaru gasket that won't leak? We get it finding a high quality gasket for your Subaru exhaust system can be challenging. Most aftermarket Subaru gaskets fail to deliver, leaving you with frustration. Why? Many gaskets aren't made entirely from stainless steel, leading to premature wear and failure. We know most of us have experienced the dreaded waffle gasket blow out! No good.