Product Overview

This high-performance Diesel Fuel Injection Pump Head Rotor, identified by OEM numbers 146403-6820 and 9461616828, is a critical component for Bosch VE-type distributor injection pumps. Designed for precision fuel delivery in 4-cylinder diesel engines, this rotor head is a direct replacement for Mazda diesel applications and other compatible commercial vehicles. We provide global shipping solutions to major industrial hubs across North America, Europe, Asia-Pacific, and the Middle East, ensuring fast and reliable delivery for your B2B procurement needs.

Key Features & Benefits

• Precision Engineering: Manufactured to exacting tolerances (10mm diameter) for optimal fuel metering and injection timing.
• Enhanced Durability: Constructed from high-grade hardened steel to withstand the high pressures within the VE pump, reducing wear and extending service life.
• Direct Fitment: Designed as a direct OEM replacement (146403-6820 / 9461616828), ensuring a seamless installation without modifications.
• Improved Engine Performance: Restores proper fuel delivery, leading to smoother idling, better throttle response, and reduced emissions.
• Rigorous Quality Control: Each unit is tested for dimensional accuracy and hydraulic performance before shipment.

Technical Specifications

OEM Cross-Reference

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

• Primary OEM: 146403-6820
• Alternate OEM: 9461616828, 9 461 616 828
• Related Reference: 146403-6810 (May apply to similar 10mm configurations, verify fitment)

Compatibility

This component is designed for Bosch VE-type distributor injection pumps used in various 4-cylinder diesel engines. Common applications include:

• Vehicle Makes: Mazda (specific diesel models), Isuzu, Mitsubishi, and other Asian light-duty trucks and machinery.
• Engine Types: 4-cylinder naturally aspirated and turbo-diesel engines utilizing the VE pump.
• Note: Always verify the pump model (e.g., VE4/10F) and plunger diameter (10mm) against your existing part to ensure correct fitment.

Global Supply & Distribution

We are committed to serving the global B2B market with efficient logistics. Our supply chain is designed to support international buyers with bulk orders and fast shipping.

• Worldwide Shipping: Reliable courier and freight services to all continents.
• Major Markets: Strong distribution to North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, Poland), Asia-Pacific (Japan, South Korea, Australia), and the Middle East (UAE, Saudi Arabia).
• Fast Delivery: Standard processing within 24-48 hours. Express shipping available to major ports and industrial centers.
• Trade Compliance: Experienced in international export documentation and customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities in Shandong, China, utilizing high-grade materials and precision machining.
• Warranty: Backed by a 4-month warranty against manufacturing defects in materials and workmanship.
• Testing: Each rotor head undergoes dimensional inspection and pressure testing to ensure it meets OEM performance specifications.

FAQ

Q: Will this head rotor fit my Mazda 4-cylinder diesel engine?
A: This part (146403-6820 / 9461616828) is specifically designed for Bosch VE-type pumps with a 10mm plunger, commonly found in Mazda and other Asian diesel engines. Please verify that your injection pump is a VE4/10F type and that the pump head diameter matches your existing unit before purchase.

Q: What is the installation procedure for this head rotor?
A: Installation requires disassembly of the VE injection pump. It is a precision component that must be installed with strict cleanliness. We recommend replacement by a qualified diesel fuel injection technician. The rotor must be correctly timed and lubricated with diesel fuel during assembly to prevent immediate seizure.

Q: How does this part improve engine performance?
A: A worn head rotor can cause uneven fuel distribution, hard starting, and loss of power. Replacing it restores the precise hydraulic metering within the pump, ensuring each cylinder receives the correct fuel charge. This results in smoother engine operation, improved starting, and restored horsepower.