ZH Power Craft professional pressure washers combine industrial Honda Engines with high quality Cat direct drive triplex pumps. Professional pressure washers are designed by Northern® engineers to meet the demands of the professional and rental markets. Chosen by 86% of self-service car washes (the most demanding industrial application). Field proven 3-4 times longer seal life. The least expensive pump to maintain. The Cat 3SP pump features a brass manifold and ceramic plungers.