Product Overview
The Heavy Motions 423-9323-007 is a heavy-duty, two-stage tandem gear pump (350 Series) engineered for demanding hydraulic systems in mobile equipment like Serco Loaders. Featuring a counter-clockwise left (CCW) rotation, SAE “C” 4-bolt mounting, and robust 1-1/4"-14 splined shaft, this pump ensures rugged, reliable performance. Its first stage includes a 2″ gear width and a common inlet with split-flange #40 (2-1/2") inlet port and ORB #16 outlet ports on both front and rear sections. The second stage also features a 2″ gear width, an unported end cover, and extended top studs. Ideal as an aftermarket replacement for Permco P257B450AXZA20-6ZKCZA20-1, this Heavy Motions unit delivers OEM-level fitment, quality, and service life, offering powerful performance and seamless integration.
