Simple to install, easy to clean and service with Replaceable and upgradeable motor cartridges. Impact, chemical and fuel resistant thermo plastic housing. 316 Stainless Steel shaft and corrosion resistant hardware. Includes both a straight and 90 - Degree easy - to - install, externally threaded Dura - Port discharge ports virtually eliminating port failure. NNMA, ABYC, Coast Guard and CE certified. Includes 2 externally threaded duraports, straight and 90 - Degree which virtually eliminate port failure. Includes removable check valve. Replaceable and upgradable motor cartridges. 3 year warranty.