Product Overview

This is a premium-grade fuel injection pipe, part number 3978036, engineered for the Cummins QSB6.7 diesel engine platform. Designed to meet or exceed OEM specifications, this critical component ensures precise fuel delivery for optimal engine performance and efficiency. We supply this part globally to distributors, workshops, and OEMs across major industrial markets, ensuring reliable operation in construction, agriculture, power generation, marine, and material handling applications.

Key Features & Benefits

• OEM-Spec Precision: Manufactured to exact OEM dimensions and tolerances for a perfect fit and seamless integration with your QSB6.7 engine.
• Enhanced Durability: Constructed from high-grade materials to withstand high-pressure fuel systems and resist vibration, corrosion, and thermal stress.
• Optimal Engine Performance: Ensures consistent and accurate fuel delivery to the injectors, maintaining engine power, fuel economy, and emission control.
• Rigorous Quality Control: Each part undergoes thorough inspection and testing, supported by machinery test reports and video outgoing-inspection documentation.
• Global Compliance Ready: Packaged and documented for smooth international shipping and customs clearance.

Technical Specifications

OEM Cross-Reference

This part is a direct replacement for the following OEM number:

• Cummins: 3978036

Note: Always verify the part number from your original component or engine service manual before ordering to ensure compatibility.

Compatibility

This fuel injection pipe is specifically designed for engines using the Cummins QSB6.7 platform. This engine is widely used in:

• Construction Machinery: Excavators, loaders, bulldozers, compactors.
• Industrial Power Units: Generators (Gensets), pumps, compressors.
• Agricultural Equipment: Tractors, combines, irrigation systems.
• Marine Applications: Auxiliary engines and propulsion systems for workboats.
• Material Handling: Forklifts, terminal tractors.

Global Supply & Distribution

We are a trusted supplier for the global aftermarket, specializing in efficient international logistics. Our supply chain is optimized for fast delivery to key industrial regions worldwide.

• Worldwide Shipping: We export to North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands, Poland), Asia-Pacific (Australia, Singapore, Japan), the Middle East (UAE, Saudi Arabia), South America, and Africa.
• Fast Port-to-Door Service: Consolidated shipments to major ports like Los Angeles, Rotterdam, Hamburg, Singapore, and Dubai, with reliable inland forwarding to your facility.
• Export Expertise: All documentation (commercial invoice, packing list, certificate of origin) is provided professionally to ensure hassle-free customs clearance and compliance with international trade regulations.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities using precision tooling and high-quality materials.
• Comprehensive Warranty: Backed by a 6-month warranty from the date of delivery, covering defects in material and workmanship.
• Testing & Documentation: Every batch is subject to pressure and dimensional testing. A machinery test report is available, and our production process includes video outgoing-inspection for added transparency.
• After-Sales Support: Post-warranty technical support is available via online channels to assist with installation or compatibility questions.

FAQ

Q1: How do I confirm this part will fit my specific Cummins QSB6.7 engine?
A1: The primary identifier is the OEM part number. Please locate the part number stamped on your existing fuel injection pipe or refer to your engine’s service parts manual to confirm it is 3978036. The QSB6.7 engine model must also match.

Q2: What is included in the packaging, and are installation instructions provided?
A2: The part is securely packed in a plastic bag inside a box or carton for protection during transit. While basic part-specific installation guidelines can be provided, professional installation following the official Cummins QSB6.7 service manual procedures is strongly recommended to ensure proper torque specifications and leak-free operation.

Q3: Do you provide documentation for customs and quality verification?
A3> Yes. With every order, we provide full commercial export documentation. Upon request, we can also supply the machinery test report for the production batch as evidence of quality control and compliance with technical specifications.

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 .