• Q:Which equipment model is this hydraulic piston pump assembly suitable for?
• A: This high-durability hydraulic piston pump assembly is designed for E330GC excavator equipment. Please confirm your machine model and serial number before ordering.
  
• Q: What are the compatible part numbers?
• A:The reference part numbers are 551-1122 and 20R-9712. Please compare the part numbers, pump specifications and mounting dimensions with your original unit before purchase.
  
• Q:What should be checked before installation?
• A: Before installation, inspect the mounting position, hydraulic lines and fittings. Use clean hydraulic oil and check or replace the hydraulic filter if necessary to support reliable pump operation.
  

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.

Part Numbers For Other Models: