1003259 Hydraulic Pump for CAT 416B 426B 428B Backhoe Loader | Premium 0R-9645 Replacement Axial Piston Pump

Don't let a failing hydraulic system stall your project. The 1003259 Axial Piston Pump is the heavy-duty solution for CAT 416B, 426B, and 428B backhoe loaders. Designed to deliver consistent high-pressure fluid flow, this pump ensures your boom, bucket, and steering respond with factory-level precision.

• Plug-and-Play Fitment: Precision-engineered to mirror the exact dimensions and mounting points of the original Caterpillar 100-3259 pump. Installation is straightforward with no modifications required.
• Rexroth-Style Efficiency: Utilizing a proven axial piston design, our pump offers superior variable displacement capabilities, minimizing energy waste and maximizing hydraulic output.
• Extreme Durability: Constructed with high-strength alloy steel and reinforced internal components to withstand cavitation and thermal stress in demanding construction environments.
• Certified Performance: Every pump undergoes a 100% flow and pressure bench test before leaving the facility, guaranteeing it meets or exceeds OEM performance standards.

Q: Which Caterpillar models are compatible with the 1003259 hydraulic pump? A: The 1003259 (or 100-3259) pump is designed specifically for Caterpillar Backhoe Loader models including the 416B, 426B, 428B, 436B, and 438B. It is typically paired with the CAT 3054 engine.

Q: Can I use 0R-9645 instead of 1003259? A: Yes. 0R-9645 is the official Caterpillar remanufactured (Reman) interchange part number for 100-3259. Our premium aftermarket pump serves as a direct, new replacement for both numbers.

Q: What is the main benefit of the axial piston design in this pump? A: The axial piston design allows for variable displacement, meaning the pump only provides the flow required by the load. This results in significantly higher fuel efficiency and smoother operation compared to fixed gear pumps.

Q: Is this 1003259 pump a direct replacement for the original Rexroth pump? A: Yes, our pump follows the original Rexroth-style engineering specifications used by Caterpillar, ensuring full compatibility with your existing hydraulic lines and control systems.

Guangzhou Tieqi Engineering Machinery Co., Ltd. ("IRON CAVALRY") is strategically located in Guangzhou's Huangpu District, approximately one hour from Baiyun International Airport. With nearly 15 years of specialized experience in engineering machinery hydraulics, we have established ourselves as industry leaders in heavy equipment components.

• Ready inventory of over 500 assembly types, providing access to more than 6,000 different parts
• Core products include hydraulic pumps, control valves, travel, and swing assemblies
• Specialization in large mining excavator components and hard-to-find items
• 4,000-square-meter factory equipped for professional manufacturing, precision assembly, and rigorous testing
• Integrated supply chain providing cost-effective, convenient one-stop solutions

For large items, we use sturdy plywood crates secured with metal fasteners. Products are carefully cushioned with bubble wrap and secured with wooden braces. External crate reinforcement includes high-strength PET plastic strapping and waterproof black film to ensure safe transit and delivery.

• One-stop solution for all your hydraulic needs
• High-quality products at competitive prices
• Exceptional customer service that makes you feel at home
• Large inventory with short delivery times and long warranty periods
• Professional expertise with accurate data for excavator part number inquiries
• Ability to source parts for nearly all your equipment needs

For detailed specifications, pricing information, or technical consultation, please contact our sales team for personalized assistance.