Product Overview

This high-performance 4 Cylinder Diesel Injection Head Rotor is a critical component for the Isuzu 4JB1 engine fuel injection system. Designed for replacement and repair, this rotor head ensures precise fuel metering and reliable engine performance. We offer global shipping to major markets including North America, Europe, Asia-Pacific, the Middle East, Africa, and South America, providing fast and efficient logistics for B2B buyers worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications (OE NO. 146402-0820 & 9461612320) for a perfect fit and flawless operation.
• Superior Durability: Constructed from high-grade materials to withstand extreme pressures within the injection pump, ensuring a long service life.
• Enhanced Performance: Optimized for the 4JB1 engine, guaranteeing stable fuel delivery, improved combustion efficiency, and reduced emissions.
• Rigorous Testing: Each unit undergoes strict quality control checks to meet high-performance standards before shipment.
• Direct Replacement: A direct swap for the original part, minimizing downtime during repair or maintenance.

Technical Specifications

OEM Cross-Reference

• Primary OEM Number: 146402-0820
• Alternate OEM Number: 9461612320
• Additional Reference: 9 461 612 320

Note: Always verify the OEM number on your original part to ensure correct fitment.

Compatibility

• Engine Model: Isuzu 4JB1 (4-cylinder diesel engine)
• Vehicle Applications: Commonly used in Isuzu N-Series trucks (NHR, NKR), light-duty commercial vehicles, and various industrial equipment powered by the 4JB1 engine.
• Part Fitment: Direct replacement for the fuel injection pump head rotor.

Global Supply & Distribution

We are a dedicated supplier of diesel engine parts with a strong global distribution network. Our logistics capabilities ensure fast and reliable delivery to major ports and industrial centers worldwide.

• Worldwide Shipping: We ship to all continents via air, sea, and express courier services.
• Key Markets: Serving North America, Europe, Southeast Asia, the Middle East, Africa, and South America.
• Fast Delivery: Efficient processing and dispatch to minimize lead times for international B2B customers.
• Export Expertise: Our team has extensive experience in international trade, ensuring smooth customs clearance and compliance with global shipping standards.

Quality Assurance

• Manufacturing Standards: Produced in a certified facility in Shandong, China, adhering to strict quality control processes.
• Performance Testing: Each injection pump head rotor is tested for dimensional accuracy, pressure tolerance, and material integrity.
• Warranty: Backed by a 4-month warranty against manufacturing defects, ensuring peace of mind for your purchase.

FAQ

Q1: Is this injection pump head rotor a direct replacement for my Isuzu 4JB1 engine?
A1: Yes, this part (146402-0820 / 9461612320) is an OEM-spec direct replacement specifically designed for the Isuzu 4JB1 fuel injection pump. It matches the original dimensions and specifications, making installation straightforward for a qualified mechanic.

Q2: What is the recommended installation procedure for this rotor head?
A2: Installation should be performed by a professional diesel technician. The process involves disassembling the injection pump, cleaning the housing, replacing the old rotor head with the new one, and precisely re-calibrating the pump timing and fuel delivery settings on a test bench to ensure optimal engine performance.

Q3: How can I ensure the longevity of this injection pump head rotor?
A3: To maximize service life, always use clean, high-quality diesel fuel and replace the fuel filter regularly. Contaminants in the fuel are the primary cause of wear. During installation, ensure the injection pump is properly lubricated and the system is bled of air to prevent cavitation damage.