The Karcher Triplex Pump, 3.2GPM@3600PSI, 3400RPM (8.754-327.0) is a replacement pump suitable for a wide variety of pressure washer units. It supersedes the pump 9.120-019.0. Please check your owner's manual or with the manufacturer directly for compatibility. It features a forged brass manifold for greater durability and corrosion resistance, anodized die case crankcase with large cooling fins for optimal heat dissipation, ceramic plunger to provide improved resistance to wear, and a strengthened one piece alloy aluminum connecting rod.