One New Aftermarket Replacement Hydraulic Pump Fits John Deere 450 Series Crawler DozersThis aftermarket replacement hydraulic pump Fits John Deere 450-series crawler dozers and delivers the hydraulic flow needed to power blade, lift, and steering functions. The pump features a 13-spline shaft and is rated at 19 GPM. This is the standard (non-auxiliary hydraulics) pump configuration. Fits John Deere OEM part number AT71451.Specifications Flow Rate: 19 GPM Shaft: 13-Spline Configuration: Standard hydraulics (no auxiliary hydraulics) Compatible ModelsFits John Deere Crawler Dozers: 450C - Serial Number 380046 and Above 450D 450E Important: For the Fits John Deere 450C, this pump fits Serial Number 380046 and above only. Verify your serial number before ordering.Replaces Part Number(s):AT71451New aftermarket replacement part - not remanufactured, not used.