Pump Overview

This genuine Cummins OEM high-pressure fuel pump (3973228 / 5594766 series) is a critical component of the common rail injection system for 8.9-liter engines. Engineered for maximum precision, it generates the extreme pressures needed for fine fuel atomization, resulting in cleaner combustion, reduced emissions, and strong power delivery across the RPM range.

Volgen Power supplies authentic units with full OEM quality assurance, ensuring seamless integration and long-term reliability in demanding off-highway and on-highway environments.

Performance Strengths

• High-Pressure Precision → Generates up to 1600+ bar for optimal fuel delivery and combustion efficiency
• Robust Internal Design → Heavy-duty plungers and components resist wear under continuous heavy loads
• Quick Response → Fast actuation supports responsive throttle and smooth operation
• Fuel Economy Optimized → Precise metering reduces consumption and improves overall engine efficiency
• Direct OEM Compatibility → Bolt-on replacement with factory connectors and drive gearing

Equipment & Engine Applications

Widely installed in:

• Komatsu PC300-8 Excavators (SAA6D114E-3 engine)
• Liugong Wheel Loaders and Excavators
• Dongfeng Medium/Heavy Trucks
• Mining Trucks and Dumpers
• XCMG, Liugong, Shantui Motor Graders and Road Rollers

Compatible Cummins engine models:

• ISLe (various ratings)
• QSC8.3
• QSL9 (industrial, marine, and construction configurations)

Technical Specifications

Volgen Power keeps this high-demand fuel pump in stock for fast worldwide shipping and expert technical support.

Revitalize your Cummins or Komatsu engine’s fuel system – contact us today for pricing, exact fitment details, or to secure your order. Request a quote now!