In Brief: • Proprietary core design with    corrosion resistant fins • 304 stainless steel tanks             – Twice as strong as regular steel             – Rust free • Die-cut, one piece gaskets             – Perfect fit every time, all the time • 3/16-inch cold rolled steel side supports • Marine-grade primers and    chemically-resistant topcoat             – Better salt corrosion resistance             – Greatly reduces rust build-up             – which weakens parts and             – shortens life expectancy • Tested by Cummins N-Power • Guaranteed & Warranted