Brand NEW 16 GPM Log Splitter Pump / 2 Stage Gear Pump This is same pump used by SpeeCo, Champion, Oregon, MTD and many others. Use as a replacement or a "build it yourself" splitter project The 2-stage pump can give you faster cycle times and higher possible pressure with a small engine. Excellent for use on log splitters, 90% efficient. Recommended 8-12hp engine Specifications: 16 GPM @ 3600RPM. Shaft: ½" (key included) Inlet: 1" diameter Outlet: ½" NPT Dimensions: 5.5"L x 3"H x 4"W Minimum HP: 8 RPM Requirement: 3600 for 11 GPM, pump can be operated with lower RPM's For use with open center hydraulic systems only 1st Stage: 13 GPM@650 PSI 2nd Stage: 3 GPM@2500 PSI Maximum Pressure: 4000 PSI Bolt Circle: 2.83in. 4 Bolt Holes Spaced 2in. on Center Bolt Hole Diameter: .344in. Rotation: Clockwise Large Pump Mount: Length: 5-1/4" Pump Side: 2-3/4" bolt circle (8 holes), 2" on center Engine Side: 5" bolt circle, 3-1/2" on center Durable case iron construction Compatible with most 8-14HP gas engines Lovejoy Coupler: - The kit is shipped standard with an L90 1/2" x 1" Lovejoy coupler (1/2" side for pump shaft, 1" side for engine shaft) - If you need a different size contact us when you place your order and we will gladly substitute to meet your needs We have ALL the common sizes in stock! Bolts, Lock Washers, Nuts Kit comes with the necessary fasteners to bolt the mount and pump together. You'll supply your own engine mounting bolts