Product Overview

This is a professionally remanufactured Fuel Injection Pump, referencing OEM numbers 3973228 and 6745-71-1170. Designed specifically for the Cummins QSC8.3L diesel engine, this pump is a direct replacement for applications in the Komatsu PC300-8 excavator. Our facility in Shandong, China, specializes in high-performance diesel injection components, serving a global B2B clientele across North America, Europe, Southeast Asia, and the Middle East. We ensure reliable supply chains and fast shipping to major industrial ports worldwide.

Key Features & Benefits

• Precision Remanufacturing: Restored to factory specifications using OEM-grade components for reliable fuel delivery and optimal engine performance.
• High-Performance Output: Ensures correct injection timing and pressure, maximizing fuel efficiency and reducing emissions for your QSC8.3L engine.
• Durability & Longevity: Built to withstand the high demands of heavy equipment operation, reducing downtime and maintenance costs.
• Direct Fitment: A true bolt-on replacement for the original pump, simplifying installation for your service team.
• Cost-Effective Solution: Provides OEM-quality performance at a fraction of the cost of a new unit, offering excellent value for fleet maintenance.

Technical Specifications

OEM Cross-Reference

This fuel injection pump is a direct cross-reference for the following OEM numbers:

• Cummins Part Number: 3973228
• Komatsu Part Number: 6745-71-1170

Compatibility

This pump is specifically designed for the following engine and equipment models:

• Engine: Cummins QSC8.3L Diesel Engine
• Excavator: Komatsu PC300-8
• Other Applications: May also be compatible with other heavy machinery utilizing the QSC8.3 engine platform. Please verify your specific engine model and existing part number before ordering.

Global Supply & Distribution

We are a dedicated supplier to the global aftermarket, offering efficient logistics to support your operations:

• Worldwide Shipping: We ship to all major continents, including North America, South America, Europe, Africa, and the Asia-Pacific region.
• Fast Delivery: Orders are processed quickly for shipment to major ports like Houston, Rotterdam, Shanghai, and Dubai.
• B2B Focus: We understand the needs of parts distributors, repair shops, and fleet managers, offering consistent stock and reliable lead times.
• Trade Compliance: Experienced in international export documentation and customs clearance.

Quality Assurance

• Manufacturing Standards: Our remanufacturing process follows strict quality control standards to ensure reliability and performance.
• Testing: Each pump is tested for fuel delivery, pressure, and timing accuracy before shipment.
• Warranty: This product is backed by a 3-month warranty against defects in materials and workmanship, giving you peace of mind for your repair.

FAQ

Q: Is this pump a direct replacement for the original part on my Komatsu PC300-8?
A: Yes, this pump is remanufactured to be a direct bolt-on replacement. It matches the OEM specifications for the Komatsu PC300-8 with a Cummins QSC8.3L engine. We recommend comparing your existing part number (3973228 or 6745-71-1170) to confirm fitment.

Q: What does “Remanufactured” mean for this fuel injection pump?
A: This pump has been fully disassembled, cleaned, and inspected. All worn or damaged internal components (such as plungers, barrels, and seals) have been replaced with new parts. It is then reassembled and tested to meet OEM performance standards, offering a reliable and cost-effective alternative to a new pump.

Q: What is the recommended procedure for installing this pump?
A: Installation should be performed by a qualified diesel technician. It is critical to ensure the engine is at Top Dead Center (TDC) on the compression stroke before installation. The injection timing must be set precisely according to the Cummins QSC8.3 service manual. We also recommend replacing the fuel filter and priming the fuel system after installation to prevent air locks. Incorrect installation can lead to poor engine performance or damage.