Concentric 1003754 SAE 4F17 4-Bolt 2-Stage 2.6 GPM Hydraulic Gear Pump
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The Concentric 1003754 is a new two-stage hydraulic gear pump manufactured by Concentric (Rockford, IL), featuring an SAE 4-bolt 4F17 flange mount and a GC-sealed construction for reliable, leak-free operation. The two-stage design delivers a maximum flow of 2.6 GPM on the first stage, making it well-suited for split-flow hydraulic circuits commonly found on log splitters, dump trailers, and other mobile hydraulic equipment where high-speed/low-pressure and low-speed/high-pressure circuits are required in tandem. The cast-iron housing is black painted for corrosion resistance, ports are capped with color-coded plastic shipping plugs (green inlet, yellow shaft/outlet), and the pump ships new in original factory packaging with a four-bolt SAE flange drive-end for standard PTO or motor mounting. Port connections and internal gear geometry conform to Concentric's standard for the 5ZPL8 / 1003754 model family, cross-referencing directly to Grainger catalog item 5ZPL8 per the box label visible in the photos.
Product Specifications
| Brand | Concentric (Rockford, IL) |
| MPN | 1003754 |
| Cross-Reference / Catalog # | 5ZPL8 |
| Pump Type | Gear Pump, 2-Stage |
| Number of Stages | 2 |
| Flange Mount | SAE 4-Bolt, 4F17 |
| Max Flow Rate – 1st Stage | 2.6 GPM |
| Seal Type | GC Sealed |
| Housing Material | Cast Iron |
| Condition | New |
| Rotation | Clockwise (CW) from shaft end |
| Shaft Type | Keyed, splined per SAE 4F17 standard |