Product Overview

This high-precision Diesel Injection Pump DPA Rotor Head is a critical component for fuel delivery systems in heavy-duty excavator and industrial diesel engines. Engineered for reliability and exact fuel metering, this rotor head is designed to meet or exceed OEM specifications. We are a leading global supplier, ensuring fast and reliable shipping to major industrial markets including North America, Europe, Southeast Asia, the Middle East, and Australia.

Key Features & Benefits

• Precision Engineering: Manufactured to exact tolerances for optimal fuel pressure and timing, ensuring maximum engine efficiency and power output.
• Superior Durability: Constructed from high-grade hardened steel to withstand extreme pressures and resist wear, extending the service life of your injection pump.
• OEM Quality Standards: Direct replacement for OEM parts, offering a perfect fit and seamless integration with existing DPA pump assemblies.
• Enhanced Performance: Ensures smooth engine operation, reduced fuel consumption, and lower emissions in compliance with international standards.
• Rigorous Testing: Every rotor head undergoes strict quality control checks, including pressure and dimensional testing, before shipment.

Technical Specifications

OEM Cross-Reference

This rotor head is a direct cross-reference for the following OEM and industry-standard numbers:

• 7123-340J
• 7180-550J
• 344J
• 558A

Compatibility

This DPA rotor head is designed for use in diesel engines equipped with CAV DPA type fuel injection pumps. Common applications include:

• Industrial and construction machinery (Excavators, Loaders, Dozers)
• Agricultural tractors and harvesters
• Marine diesel engines
• Generator sets

Note: Please verify your existing pump model and part number to ensure compatibility. This is a precision component for 4 and 6-cylinder applications.

Global Supply & Distribution

We offer comprehensive global supply chain solutions for B2B buyers:

• Worldwide Shipping: Reliable logistics via air, sea, and express courier (DHL, FedEx, UPS, TNT) to over 100 countries.
• Major Markets Served: We maintain strong distribution networks in the USA, Canada, Germany, UK, UAE, Saudi Arabia, Singapore, Australia, and South Africa.
• Fast Delivery: Stocked inventory ensures rapid dispatch, with delivery times as short as 3-7 business days to major industrial ports and airports.
• Trade Compliance: Experienced in international trade documentation, customs clearance, and export regulations.

Quality Assurance

• Manufacturing Standard: Produced in ISO 9001 certified facilities.
• Warranty: All parts come with a 12-month warranty against manufacturing defects.
• Testing: Each rotor head is tested for hydraulic pressure, dimensional accuracy, and surface finish before packaging.

FAQ

Q1: How do I know if this rotor head fits my specific injection pump?
A: Please check the model number on your pump’s data plate. This rotor head is designed for CAV DPA pumps. It is compatible with part numbers 7123-340J, 7180-550J, 344J, and 558A. If your pump uses a different number, please contact us with your old part number for cross-verification.

Q2: What are the signs of a failing rotor head?
A: Common symptoms include hard starting, engine misfiring, loss of power, excessive black smoke, and fuel leaks from the pump. If you experience these issues, replacing the rotor head and related seals is often the recommended repair.

Q3: Is any special installation procedure required?
A: Yes. Replacing a DPA rotor head is a precision task. It requires cleaning the pump housing, lubricating the new head with clean diesel fuel, and ensuring correct timing alignment. We recommend installation by a qualified diesel fuel injection technician. Always replace the drive shaft seal and O-rings during installation.