Product Overview

This high-quality Head Rotor (Part No. 146403-7420 / 146402-7420) is a critical component for diesel fuel injection systems in excavators and heavy machinery. Designed as a direct replacement for standard applications, this 4/11R rotor head ensures precise fuel metering and reliable engine performance. We are a leading supplier based in Shandong, China, with extensive export experience serving markets across North America, Europe, Asia-Pacific, the Middle East, and Africa. We offer fast, reliable global shipping via DHL, UPS, FEDEX, EMS, and TNT, ensuring your operations stay on track.

Key Features & Benefits

• Precision Engineering: Manufactured to meet or exceed OEM specifications for a perfect fit and reliable operation.
• Enhanced Durability: Constructed from high-grade materials to withstand the high pressures and demanding conditions of diesel injection systems.
• Improved Engine Performance: Ensures accurate fuel delivery, leading to better fuel efficiency, reduced emissions, and smoother engine running.
• Standard Size Compatibility: Designed as a direct replacement for the standard size, simplifying installation and reducing downtime.
• Rigorous Quality Control: Each unit undergoes strict testing to guarantee excellent performance and long service life.

Technical Specifications

OEM Cross-Reference

This rotor head is a direct replacement for the following original equipment manufacturer (OEM) numbers:

• 146403-7420 (Primary OEM Number)
• 146402-7420 (Alternative OEM Number)

Please verify your application against these numbers to ensure correct fitment.

Compatibility

• Engine Application: Designed for use in various diesel engines commonly found in excavators, loaders, and other heavy construction equipment.
• Vehicle Model: Suitable for a wide range of diesel cars and industrial machinery utilizing compatible fuel injection pumps.
• Note: Please consult your engine or injection pump manual to confirm compatibility with the 4/11R rotor head specification.

Global Supply & Distribution

As a dedicated supplier, we are committed to serving the global B2B market. Our logistics network ensures efficient and timely delivery to major industrial centers worldwide.

• Shipping Partners: We collaborate with DHL, UPS, FEDEX, EMS, and TNT to offer flexible and fast shipping options.
• Major Markets: We regularly export to North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (Australia, Japan, Korea), the Middle East (UAE, Saudi Arabia), and Africa.
• Delivery Time: Standard orders are processed and dispatched within 3-7 working days after payment confirmation.
• Supply Capacity: We maintain a robust supply chain with the ability to supply up to 1000 pieces per month to meet large-volume demands.

Quality Assurance

• Manufacturing Standards: Produced in a facility that adheres to strict quality control procedures to ensure consistent product excellence.
• Warranty: This product is backed by a 6-month warranty against manufacturing defects.
• Testing: Each part is inspected for dimensional accuracy and operational integrity before packaging.
• Packaging: Parts are securely packed in plastic tubes and carton boxes, with palletization available for bulk orders, to prevent damage during transit.

FAQ

Q1: What does “4/11R” mean in the part specification?
A: “4/11R” refers to the specific design and plunger configuration of the rotor head. “4” typically indicates the number of plungers, “11” refers to the plunger diameter in millimeters, and “R” often denotes the rotation direction. This specific configuration is designed for a particular range of fuel injection pumps.

Q2: How can I ensure this rotor head is the correct replacement for my pump?
A: The most reliable way is to cross-reference the part number on your existing rotor head. The numbers 146403-7420 and 146402-7420 are the primary identifiers. You should also verify the physical dimensions and the “4/11R” marking against your original part. If you are unsure, please provide your pump model number for further assistance.

Q3: What is the recommended installation procedure for this part?
A: Installation of a rotor head is a precision task and should be performed by a qualified diesel technician. It involves careful disassembly of the injection pump head, cleaning, and precise reassembly. It is critical to ensure all components are perfectly clean and that the rotor head is timed correctly within the pump to avoid engine damage or poor performance. We recommend consulting the specific service manual for your injection pump model.