Product Overview

This high-precision cylinder liner (part number 3904167) is engineered for the Cummins QSB6.7 diesel engine, a cornerstone of global industrial power. Designed to meet or exceed OEM specifications, this critical component is essential for engine overhauls and rebuilds across diverse sectors. We supply directly from our manufacturing base in Guangdong, China, to B2B clients worldwide, ensuring reliable performance for construction, agriculture, marine, power generation, and material handling applications.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM dimensions and tolerances for a perfect fit and optimal engine performance.
• Superior Durability: Crafted from high-grade cast iron alloys to withstand extreme pressures and temperatures, ensuring long service life and reduced downtime.
• Enhanced Heat Dissipation: Optimized design promotes efficient cooling, protecting the piston and rings from excessive wear.
• Direct Replacement: A direct-fit part that eliminates compatibility concerns, simplifying the repair process for technicians.
• Cost-Effective Solution: Provides OEM-level quality and performance at a competitive price, offering excellent value for fleet managers and repair shops.

Technical Specifications

OEM Cross-Reference

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

• Cummins: 3904167

Please verify your engine’s serial number and existing part for absolute compatibility before ordering.

Compatibility

This cylinder liner is specifically designed for the Cummins QSB6.7 diesel engine platform. This engine is widely used in a vast range of equipment, including:

• Construction: Excavators, loaders, bulldozers, compactors.
• Agriculture: Tractors, combines, irrigation pumps.
• Power Generation: Standby and prime power generator sets (Gensets).
• Marine: Auxiliary engines and propulsion for workboats.
• Material Handling: Forklifts, port equipment, and heavy-duty trucks.

Global Supply & Distribution

We are a professional exporter of heavy-duty engine components with extensive experience in international logistics and trade compliance. Our supply chain is optimized for fast, reliable delivery to key industrial regions worldwide.

• Major Markets Served: North America, European Union, Asia-Pacific, Middle East, Africa, and South America.
• Efficient Logistics: We ship via air and sea freight to all major global ports and logistics hubs, including Rotterdam, Los Angeles, Singapore, Dubai, and Hamburg.
• B2B Focus: We specialize in supplying wholesalers, distributors, large repair workshops, and equipment fleet operators.
• Export Documentation: Full commercial invoice, packing list, certificate of origin, and other required documents are provided for smooth customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities using advanced CNC machining and honing processes.
• Warranty: Backed by a 6-month warranty against manufacturing defects from the date of purchase.
• Rigorous Testing: Each batch undergoes dimensional checks, hardness testing, and surface finish analysis. A machinery test report is available upon request.
• Outgoing Inspection: Video outgoing-inspection is provided to ensure the product meets specified quality standards before shipment.

FAQ

Q: How do I confirm this cylinder liner will fit my specific Cummins QSB6.7 engine?
A: The most reliable method is to cross-reference the part number stamped on your existing cylinder liner. This part replaces OEM number 3904167. We also recommend consulting your engine’s service manual or contacting us with your engine serial number for verification.

Q: What precautions should be taken during installation?
A: Proper installation is critical. Ensure the engine block bore is thoroughly cleaned and inspected for damage. The liner should be installed using the correct tools and techniques—typically a press fit—and the protrusion must be measured precisely according to the engine manufacturer’s specifications to prevent head gasket failure.

Q: Do you provide technical support or documentation with the part?
A> While we supply the component, detailed installation procedures are found in the official Cummins service manual. We can provide general dimensional specifications and the machinery test report for the part. For complex rebuilds, we recommend the service be performed by a certified technician.

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 .