Concentric 1002499 4 GPM SAE 4F17 4-Bolt Cast Iron Hydraulic Gear Pump
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The Concentric (Rockford Inc.) 1002499 is a single-stage external gear hydraulic pump with a cast iron body, rated at 4 GPM maximum flow, designed for bi-directional rotation per the SAE 4F652A series designation confirmed on the product label visible in the photos. The pump mounts via a 4-bolt SAE 4F17 flange and features a steel output shaft (yellow shaft protector cap installed), with port connections visible on the rear face — a larger inlet and smaller outlet consistent with the 1/2 in NPT / 3/4 in NPT porting typical of this Concentric 4F series frame. Constructed from durable cast iron for use in open-center hydraulic circuits on log splitters, dump trailers, snow plows, and light industrial power units, this unit ships new — other (complete with mounting gasket, hardware, and bilingual instruction sheet as shown), with an integral pressure-relief/bypass valve (red-capped adjustment screw visible on the port face) for system protection.
Product Specifications
| Brand | Concentric / Rockford Inc. |
| MPN | 1002499 |
| Model Series | 4F652A |
| Pump Type | External Gear |
| Number of Stages | 1 |
| Max Flow Rate | 4 GPM |
| Flange Mount | SAE 4-Bolt, 4F17 |
| Body Material | Cast Iron |
| Rotation | Bi-Directional |
| Shaft Type | Keyed (straight) |
| Relief Valve | Integral (adjustable) |
| Condition | New — other |
| Includes | Gasket, mounting hardware, instruction sheet |