The GKC 42/15-S Udor Super Duty G-Series Pump is a heavy-duty, premium car wash pump for automatic and self-serve car washes. These pumps feature a strong brass manifold, Niploy plated valve caps with increased thread depth, heavy-duty tapered roller bearings and deep back covers for increased oil capacity. This G-series pump also features ceramic plungers, stainless steel piston guides, flat base high-pressure seals and a heat-treated crankshaft.