
Product Overview
This is a premium-grade high-pressure fuel pipe designed for Komatsu 6D114 diesel engines, specifically used in the PC300-7 excavator. Manufactured to strict OEM specifications, this critical component ensures precise fuel delivery and optimal engine performance. We supply this part globally to distributors, workshops, and construction companies across North America, Europe, the Middle East, and Asia-Pacific, supporting the maintenance of heavy machinery worldwide.
Key Features & Benefits
- OEM-Spec Precision: Manufactured to exact OEM dimensions and tolerances for a perfect fit and reliable performance, ensuring seamless integration with the Komatsu 6D114 fuel system.
- Enhanced Durability: Constructed from high-grade materials to withstand extreme pressures and vibrations common in heavy-duty construction and industrial applications.
- Leak-Prevention Design: Precision-engineered fittings and robust construction minimize the risk of high-pressure fuel leaks, protecting engine efficiency and operational safety.
- Direct Replacement: Serves as a direct, bolt-on replacement for the original part, reducing equipment downtime and simplifying the repair process for technicians.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Type | High Pressure Fuel Pipe / Line |
| Primary Part Number | 6743-71-5510 |
| Alternative Part Number | 6743-71-5520 |
| Compatible Engine Model | Komatsu 6D114 Diesel Engine |
| Application Machinery | Komatsu PC300-7 Excavator |
| Size / Dimensions | OEM Standard Size |
| Weight (Approx.) | 2 kg |
| Warranty | 6 Months |
| Packing | Plastic Bag, Box, Carton |
| Place of Origin | Guangdong, China |
OEM Cross-Reference
This high-pressure pipe is a direct replacement for the following OEM part numbers:
- Komatsu: 6743-71-5510, 6743715510
- Komatsu: 6743-71-5520, 6743715520
Compatibility
This part is engineered for compatibility with the following specific application:
- Engine Model: Komatsu 6D114 Diesel Engine
- Machine Model: Komatsu PC300-7 Hydraulic Excavator
- Typical Industry Use: Construction, Mining, Quarrying, and Heavy Industrial Projects.
Global Supply & Distribution
We are a specialized exporter of heavy machinery engine parts with a robust global logistics network. We efficiently serve B2B clients in key industrial regions:
- Major Markets: North America (USA, Canada), European Union (Germany, UK, Poland), Asia-Pacific (Australia, Japan, Southeast Asia), Middle East (UAE, Saudi Arabia), and South America.
- Fast Delivery: Consolidated shipments to major ports like Los Angeles, Rotterdam, Singapore, and Jebel Ali. Air freight options available for urgent requirements.
- Export Compliance: All shipments are prepared with complete commercial invoices, packing lists, and comply with international trade regulations for smooth customs clearance.
Quality Assurance
- Manufacturing Standard: Produced in ISO-certified facilities using precision tooling to match OEM blueprints.
- Rigorous Testing: Each batch undergoes pressure testing and dimensional checks. A machinery test report is available upon request.
- Pre-Shipment Inspection: Video outgoing-inspection is provided to verify product quality and packing before dispatch.
- Warranty Backed: Supported by a 6-month warranty against manufacturing defects, ensuring confidence in your purchase.
FAQ
Q1: Is this a genuine Komatsu part or an aftermarket replacement?
A1: This is a high-quality aftermarket replacement part manufactured to OEM specifications. It is designed to match the fit, form, and function of the genuine Komatsu part number 6743-71-5510/5520, offering reliable performance at a competitive price point for the B2B market.
Q2: How do I ensure this is the correct pipe for my specific PC300-7 machine?
A2: The correct identification is based on your engine model. This pipe is specifically for machines equipped with the Komatsu 6D114 engine. We recommend cross-referencing the part number stamped on your old pipe or consulting your machine’s service manual. Our technical support can assist with verification.
Q3: What precautions should be taken during installation?
A3: Always relieve fuel system pressure before disassembly. Ensure the new pipe is routed correctly without tension or sharp bends. Tighten fittings to the manufacturer’s specified torque using proper tools to prevent damage and ensure a leak-free seal. It is recommended to replace sealing washers or O-rings as per standard maintenance procedure.
Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.
2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.
3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.
4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.
5. Scientific ERP system, easy and fast to locate the parts that customer needs.
6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.
Exhibition

Packing&Shipping

1. Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).
2. Once we get confirmation of payment, we will ship products in 2 days.
3. Our packaging is standard export wooden box or others as your requirement.
4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ
Q1. What is your company major products?
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
Q2.What is the MOQ?
A: Normally we can supply any quantity if we have in stock.
Q3. What is your payment term ?
A: We accept Western Union, T/T, Paypal.
Q4. What is the packing ?
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
Q5. When can you deliver products after payment ?
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
Q6. What can you do to complete order perfectly ?
A: In the beginning , We will communicate with clients in details to understand what they need .
Before packing , We will check the products and send photos to clients .After confirmation ,
We will packing products well to avoid damage . Once we get tracking number ,
We will send it to customer and keep contact in with clients .