Our 316L stainless steel wet marine exhaust elbows for the Perkins 6.354, Perkins T6.354M, T6.354.4 Range 4 engines are far superior to the factory stamped stainless wet elbow. We use materials that are over double the thickness than OEM Perkins parts and cost far less. Extend the service life with our optional ceramic coating process. All of our Perkins wet exhaust elbows and dry exhaust elbows with insulation blankets come with our 5 year warranty.