Cummins 4BT 6BT Oil Delivery Pump 3904374 | Diesel Engine Fuel Injection Parts

Product Details

Product Overview

This high-quality Oil Delivery Pump, part number 3904374, is specifically designed for the Cummins 4BT and 6BT diesel engine series. As a critical component of the fuel injection system, this pump ensures precise fuel delivery to the injection pump, maintaining optimal engine performance and reliability.

Manufactured by , this unit is built to meet OEM specifications, making it a direct replacement for worn or failed units. It is suitable for a wide range of heavy-duty applications, including construction machinery, industrial equipment, agricultural tractors, generator sets, marine engines, and material handling vehicles.

Whether you are a fleet manager, a workshop technician, or a parts distributor, this oil delivery pump offers a cost-effective solution for maintaining the fuel system integrity of your Cummins B-series engines.

Key Features & Benefits

• OEM Specification Fitment: Manufactured to match the original dimensions and tolerances of the Cummins 3904374 pump, ensuring a hassle-free installation without modifications.
• Precision Fuel Delivery: Engineered to deliver the correct volume and pressure of fuel to the injection pump, supporting efficient combustion and reducing fuel consumption.
• Durable Construction: Built with high-grade materials to withstand the high pressures and temperatures of the diesel fuel system, offering long service life in demanding environments.
• Versatile Application: Compatible with both 4BT and 6BT engine platforms, covering a broad range of industrial, agricultural, and power generation equipment.
• Rigorous Testing: Each unit undergoes a machinery test report and outgoing video inspection to verify performance and leak-free operation before shipping.
• OEM Service Available: Custom branding and packaging options are available for volume orders, supporting both aftermarket and private label requirements.

Technical Specifications

OEM Cross-Reference

This product is a direct replacement for the following OEM part numbers. Please verify your existing part number before ordering.

• Cummins OEM: 3904374
• Note: This part is also commonly referenced as a “Fuel Supply Pump” or “Lift Pump” for the 4BT and 6BT series. Cross-check with your engine’s parts manual for specific application compatibility.

Compatibility

This Oil Delivery Pump (3904374) is commonly used for the following Cummins engine models and applications. Fitment is inferred based on standard OEM specifications; please confirm your engine model and serial number.

• Engine Models: Cummins 4BT 3.9L, Cummins 6BT 5.9L
• Common Applications:
  • Construction: Excavators, Loaders, Bulldozers
  • Industrial: Compressors, Pumps, Welders
  • Agriculture: Tractors, Harvesters, Sprayers
  • Power Generation: Generator Sets (Gensets)
  • Marine: Workboats, Fishing Vessels
  • Material Handling: Forklifts, Telehandlers

Global Supply & Distribution

We maintain a robust global supply chain to serve B2B clients in major industrial markets worldwide. Our logistics network ensures fast and reliable delivery to your warehouse or job site.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Australia, Singapore, Indonesia), Middle East (UAE, Saudi Arabia), Africa (Nigeria, South Africa), and South America (Brazil, Chile).
• Shipping Capabilities: We ship via sea freight (FCL/LCL), air freight, and express courier (DHL, FedEx, UPS, TNT) based on your urgency and budget.
• Ports & Hubs: Efficient delivery to major ports like Los Angeles, Rotterdam, Shanghai, Jebel Ali, and Singapore. We also offer door-to-door services for smaller orders.
• Trade Compliance: All products are exported with full commercial documentation, including packing lists, invoices, and certificates of origin.

Quality Assurance

We prioritize quality to ensure your equipment runs reliably. Every Oil Delivery Pump is subject to strict quality control procedures.

• Manufacturing Standards: Produced in ISO-certified facilities, adhering to stringent quality management systems.
• Testing: Each unit is tested for pressure, flow rate, and leak integrity. A Machinery Test Report and Video Inspection are available upon request to confirm product quality before dispatch.
• Warranty: We offer a 6-month warranty against manufacturing defects. After the warranty period, our team provides ongoing online technical support to assist with installation and troubleshooting.
• Packaging: Parts are securely packaged with plastic bags, foam inserts, and sturdy cartons to prevent damage during transit.

FAQ

1. How do I verify if this 3904374 pump fits my engine?

Check the part number on your existing oil delivery pump. If it reads 3904374, this is a direct replacement. Additionally, confirm your engine model (4BT or 6BT) and the engine serial number. If your pump looks physically similar but the number differs, please contact our support team with your engine details for cross-verification.

2. What are the common signs of a failing oil delivery pump?

Symptoms include difficulty starting the engine, loss of power under load, erratic idling, or fuel starvation at high RPMs. You may also notice air bubbles in the fuel lines or fuel leaks around the pump body. Replacing a failing pump promptly prevents damage to the injection pump and injectors.

3. What maintenance is required after installing a new pump?

After installation, prime the fuel system by filling the pump with clean diesel fuel and manually operating the priming lever (if equipped) until air is purged. Check for leaks at all connections. For routine maintenance, replace the fuel filter and water separator as per your engine’s service schedule to protect the new pump from contaminants.