185-5918 Hydraulic Main Axial Piston Pump for CAT 420D 428D Backhoe Loaders

The 185-5918 hydraulic pump, also written as 1855918, is a replacement hydraulic axial piston pump for CAT Caterpillar 420D and 428D backhoe loaders.

Installed in the machine’s main hydraulic system, the pump generates hydraulic flow for compatible digging, loading, lifting and steering functions. It is suitable for backhoe loader maintenance and the replacement of an original pump that is worn, damaged or unable to maintain reliable hydraulic operation.

Correct fitment should be confirmed by comparing the original part number, machine serial number and pump configuration. The drive shaft, mounting flange, rotation direction and hydraulic port arrangement should also be checked before ordering.

Restore Dependable Hydraulic Operation

A worn main pump can cause slow machine movements, weak digging performance, unstable hydraulic response, excessive oil temperature and abnormal operating noise.

The 185-5918 hydraulic pump replacement is intended for compatible CAT 420D and 428D backhoe loaders. When pump failure has been correctly diagnosed, installing the appropriate replacement can help restore dependable hydraulic flow and reduce equipment downtime.

Why Source the 185-5918 Pump From Us?

Clear Part-Number Identification
The pump can be identified using both 185-5918 and 1855918, helping buyers compare the product with the original part.

Compatibility Assistance
Provide the machine serial number, pump nameplate and original pump photos for configuration comparison before ordering.

Repair and Wholesale Support
Suitable for backhoe loader owners, hydraulic repair workshops, fleet maintenance teams and construction machinery parts distributors.

International Order Support
Send the required quantity and destination to request current availability, delivery time and freight options.

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.