Product Overview

This high-quality Diesel Fuel Injection Pump Head Rotor (OEM 146403-8720 / 9461623525) is a critical component for VE-type distributor fuel injection pumps. Designed for precision fuel metering and distribution, this head rotor ensures optimal engine performance, reduced emissions, and reliable starting. Sourced from a professional manufacturer in Shandong, China, this part is suitable for a wide range of diesel engines used in agricultural machinery, construction equipment, and commercial vehicles. We serve a global B2B clientele with fast shipping to major industrial hubs in North America, Europe, Southeast Asia, the Middle East, and South America.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications (146403-8720) for a perfect fit and seamless fuel delivery.
• Durable Construction: Made from high-grade hardened steel to withstand high-pressure injection cycles and resist wear.
• Improved Engine Performance: Ensures accurate fuel timing and distribution, leading to smoother operation, better fuel economy, and lower emissions.
• Direct Replacement: A complete drop-in replacement for the original part, minimizing downtime during repair or overhaul.
• Rigorous Testing: 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 numbers:

• 146403-8720 (Primary OEM)
• 9 461 623 525 (Alternative Number)
• 9461623525 (Numerical Cross)

Compatibility

This VE pump head rotor is commonly used in diesel engines equipped with Bosch VE-type injection pumps. It is suitable for various industrial and agricultural applications, including:

• Engine Makes: Isuzu, Perkins, Mitsubishi, Yanmar, and other diesel engines utilizing VE pump technology.
• Vehicle Types: Tractors, forklifts, excavators, generators, and light commercial trucks.
• Note: Always verify the plunger size (4/10 R) and pump model against your existing part before purchase to ensure correct fitment.

Global Supply & Distribution

We are a trusted B2B supplier with extensive export experience. Our logistics network ensures reliable and fast delivery worldwide.

• Shipping Partners: DHL, TNT, UPS, EMS, FedEx, and sea freight for bulk orders.
• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Japan, Korea, Australia), Middle East (UAE, Saudi Arabia), and South America (Brazil, Argentina).
• Delivery Time: 3-7 business days via express courier for stock items.
• Customs Compliance: All parts are packaged and documented for smooth international customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in an ISO-compliant facility with strict quality control processes.
• Testing: Each head rotor is inspected for hardness, dimensional accuracy, and surface finish.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Customer Support: 24-hour customer service team to assist with technical inquiries and order tracking.

FAQ

Q1: How do I know this head rotor will fit my pump?
A: Please check the plunger size marked on your old head rotor. This unit is a 4/10 R (4 plungers, 10mm diameter). The primary OEM numbers are 146403-8720 and 9461623525. If your pump uses these numbers, this rotor is a direct fit. We recommend comparing the dimensions of the new part with your old one before installation.

Q2: What is the installation procedure for this part?
A: Installation requires specialized knowledge of diesel fuel injection systems. The pump must be removed from the engine and disassembled in a clean environment. The head rotor and related components (such as the roller ring and drive shaft) must be installed with precise timing marks. We strongly advise that this replacement be performed by a qualified diesel technician.

Q3: Can this part be used in high-pressure common rail systems?
A: No. This head rotor is specifically designed for Bosch VE-type distributor pumps, which are mechanical rotary injection pumps. It is not compatible with modern high-pressure common rail (HPCR) systems. Please ensure your pump is a VE type before ordering.