Product Overview

This high-quality Diesel Engine Injection Pump Rotor Head (DPA type) is a critical component for maintaining precise fuel delivery in your diesel engine’s fuel injection system. Designed for direct replacement or repair, this rotor head ensures optimal engine performance, fuel efficiency, and reduced emissions. We are a leading global supplier, shipping to major industrial markets including North America, Europe, Southeast Asia, the Middle East, and South America. Our products are trusted by workshops, distributors, and fleet operators worldwide for their reliability and cost-effectiveness.

Key Features & Benefits

• Precision Engineering: Manufactured to standard size with strict tolerances for a perfect fit and reliable operation.
• Enhanced Durability: Constructed from high-quality materials to withstand high pressure and wear, extending the service life of your injection pump.
• Improved Performance: Ensures accurate fuel metering and injection timing, leading to smoother engine running and better fuel economy.
• Direct Replacement: Designed as a direct OE replacement for DPA type injection pumps, simplifying repair and reducing downtime.
• Cost-Effective Solution: A premium alternative to expensive OEM parts, offering excellent value without compromising on quality.

Technical Specifications

OEM Cross-Reference

This rotor head is a direct replacement for the following OEM and reference numbers. Please verify your existing part number before ordering.

• Main OE Number: 7123-340U
• Alternative Numbers: 7123-344U, 7123-558A, 4/9R
• Note: This part is designed for DPA (Distributor Pump Assembly) type fuel injection pumps. Cross-reference with your pump’s tag or manual for confirmation.

Compatibility

This DPA head rotor is designed for use in a wide range of diesel engines, primarily in medium-duty trucks, agricultural tractors, and industrial machinery. It is suitable for many engine models that utilize the CAV/DPA fuel injection pump system.

• Engine Applications: Diesel engines from Perkins, Ford, Massey Ferguson, Leyland, and other manufacturers using DPA pumps.
• Vehicle Types: Diesel engine trucks, tractors, excavators, and other off-highway equipment.
• Note: Always verify the pump model number (e.g., DPA 3243F340) to ensure compatibility, as variations exist between different pump series.

Global Supply & Distribution

We are a dedicated export supplier with a strong global logistics network. We specialize in providing fast, reliable shipping to customers worldwide.

• Worldwide Shipping: We ship to all major continents via air, sea, and express courier (DHL, FedEx, UPS, TNT).
• Major Markets: Our primary markets include the USA, Canada, UK, Germany, Australia, UAE, Saudi Arabia, South Africa, Brazil, and Southeast Asia.
• Fast Delivery: Orders are processed within 24-48 hours. Typical transit times are 5-10 business days for express shipping and 15-30 days for sea freight.
• Trade Compliance: We have extensive experience in international trade, customs documentation, and ensuring smooth delivery to your local port or doorstep.

Quality Assurance

We are committed to providing parts that meet or exceed OEM standards. Our quality control process ensures you receive a reliable product.

• Manufacturing Standards: Products are manufactured in ISO-certified facilities under strict quality control procedures.
• Testing: Each rotor head is inspected for dimensional accuracy, material integrity, and surface finish before packing.
• Warranty: We offer a 4-month warranty against manufacturing defects. If you encounter any issues, our professional service team is ready to assist.

FAQ

Q1: How do I know if this rotor head fits my injection pump?

A: This part is specifically designed for DPA (CAV) type rotary injection pumps. Please check the identification tag on your pump. The primary reference number is 7123-340U. If your pump uses this number or the cross-references listed (344U, 558A, 4/9R), it is likely a direct fit. If you are unsure, please contact us with your pump model number and engine details for verification.

Q2: What is involved in replacing the rotor head?

A: Replacing a rotor head is a technical procedure that should be performed by a qualified diesel fuel injection technician. It requires disassembling the injection pump, cleaning all components, and reassembling with precise torque and timing. The pump must be re-calibrated on a test bench after installation to ensure correct fuel delivery and engine performance.

Q3: What are the signs that my rotor head needs replacement?

A: Common symptoms of a failing rotor head include: hard starting, engine misfiring, loss of power, black smoke from the exhaust, irregular idling, and fuel leakage from the pump. If you experience these issues, it is crucial to have your injection pump inspected by a professional to diagnose the exact cause.