Mahle Ford 7.3L Exhaust Manifold Gasket Set. Exhaust manifold gaskets must withstand temperatures of up to 1400 Degrees and be able to stand up to wear and tear between the manifolds and cylinder heads. As manifold flanges warp over time, in these extreme conditions, you need a gasket that can help keep things sealed tight. Mahle exhaust manifold gaskets deliver peak performance in these tough conditions while providing an exceptional value.