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Description
Aftermarket 11 GPM Hydraulic Pump 9-7503-11Replacement part number: 9 7503 11, 9750311 Description: This dual stage hydraulic gear pump is built to handle intensive workloads with consistent reliability. Offering 3. 4 GPM at high pressure and 11 GPM at low pressure, its ideal for log splitters, presses, hydraulic power units, and more. Engineered for long service life and efficient operation, this unit is a powerful, compact solution for two stage hydraulic systems. Technical Specifications:
Replacement part number:
9-7503-11, 9750311Description:
This dual-stage hydraulic gear pump is built to handle intensive workloads with consistent reliability. Offering 3.4 GPM at high pressure and 11 GPM at low pressure, it’s ideal for log splitters, presses, hydraulic power units, and more. Engineered for long service life and efficient operation, this unit is a powerful, compact solution for two-stage hydraulic systems.
Technical Specifications:
Pump Type: Dual-Stage Gear
Displacement:
0.220 cu. in./rev (High-pressure stage)
0.757 cu. in./rev (Low-pressure stage)
Flow Rate:
3.4 GPM (High-pressure stage)
11 GPM (Low-pressure stage)
Max Pressure: 3000 PSI
Max Speed: 3600 RPM
Rotation: Clockwise (CW)
Shaft: 1/2' diameter x 1-1/2' length, keyed
Mounting Pattern: 4-bolt (USA Standard 4F17)
Unloader Valve Adjustment Range: 400 - 00 PSI
Overhung Shaft Load: Up to 90 lbs
Filtration Requirement: 25 micron
Inlet Port: 1' OD Hose Barb
Outlet Port: 1/2' NPT
Dimensions: 5-1/4' x 5-1/8' x 3-3/8'
Key Features:
Dual-Stage Efficiency Automatically switches between low-pressure high-flow and high-pressure low-flow modes to optimize performance
Robust Construction Built to withstand 3000 PSI and support up to 90 lbs of overhung shaft load
Flexible Unloader Range Adjustable unloader valve (400 - 00 PSI) allows for customized system control
Reliable Performance Designed for consistent speed up to 3600 RPM under demanding workloads
Easy Integration Standard 4F17 bolt pattern and keyed shaft ensure hassle-free installation
Clean Operation 25-micron filtration compatibility helps prevent system contamination and extends service life
Why Choose This Hydraulic Pump?
High Output, Compact Size Get more flow and pressure in a smaller footprint
Ideal for Log Splitters & Industrial Hydraulics Commonly used in 2-stage systems for rapid actuation
Easy Replacement Compatible with many standard mounting and shaft configurations
Reliable Under Load High shaft support and rugged internals extend operating lifespan
Versatile Performance Range Excellent balance between high-speed productivity and powerful pressure delivery
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 1194 reviews
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Product Reviews
★★★★★ 5
OMG so much better than alternative products
Size: 14 gauge silicone wire 10ft and 10ft, Color: silicone wire red and black
went to my local box store and bought both multistrand and single strand to rewire a pedal. huge issues with flexibility. bought this product and ..what a pleasure. high quality, very very flexible and well packaged.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2024
★★★★★ 5
Good fit for Mercury 150 2 stroke!
This kit fit my Mercury 150 2 stroke great. Had all the parts needed to rebuild the water pump. Works well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 28, 2025
★★★★★ 5
Fits perfect
Perfect fit for my mercury xr2 blackmax 150
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Reviewed in the United States on May 23, 2026
★★★★★ 5
It's good quality. I was happy.
It was package very well. The impeller felt of quality of course it could have been priced cheaper. I would buy it again. Then they ask u if it was easy to install. Hell no. Anyone that's had to changed one nos it sucks
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Reviewed in the United States on June 4, 2024
★★★★★ 4
Great for Merc 200
Bought for my 1985 Mercury Black Max 200. Perfect fit! Only downside was no instructions included.
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Reviewed in the United States on August 11, 2025
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