Product Overview

This high-quality 3500 Series Common Rail Injector Repair Kit Sealing Ring (Part Number: 6404003-3500) is designed for precision replacement and repair of fuel injection systems in diesel engines. Manufactured in Shandong, China, this component is engineered to meet or exceed OEM standards. We provide global shipping to major industrial hubs in North America, Europe, Asia-Pacific, and the Middle East, ensuring fast and reliable delivery for B2B clients worldwide.

Key Features & Benefits

• Premium Stainless Steel Construction: Ensures exceptional durability and corrosion resistance for long-lasting performance in high-pressure fuel systems.
• Precision Engineering: Manufactured to strict tolerances for a perfect seal, preventing fuel leaks and maintaining optimal injector performance.
• Direct OEM Replacement: Designed to replace original part number 6404003-3500, ensuring seamless fitment and function.
• Enhanced Fuel Efficiency: A reliable seal helps maintain proper fuel pressure, contributing to better combustion and reduced fuel consumption.
• Professional Service Support: Backed by a dedicated team ready to assist with technical inquiries and order management.

Technical Specifications

OEM Cross-Reference

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

• 6404003-3500 (Cummins / 3500 Series)

Note: For alternative cross-references, please contact our technical support team with your specific engine model.

Compatibility

• Engine Series: 3500 Series Diesel Engines
• System: Common Rail Fuel Injection System
• Application: Industrial, marine, and heavy-duty diesel engines requiring injector service

Global Supply & Distribution

We offer worldwide shipping solutions tailored to B2B clients. Our logistics network ensures fast delivery to major ports and industrial centers, including:

• North America: Los Angeles, Houston, Chicago, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Shanghai, Singapore, Tokyo, Sydney
• Middle East & Africa: Dubai, Jeddah, Durban

We maintain extensive export experience and comply with all international trade regulations to ensure smooth customs clearance for your orders.

Quality Assurance

• Manufacturing Standards: Produced in ISO-compliant facilities with rigorous quality control processes.
• Testing: Each batch undergoes dimensional and material testing to ensure consistent high quality.
• Warranty: Backed by a 4-month warranty against manufacturing defects.
• Certification: Parts are traceable to ensure authenticity and performance reliability.

FAQ

Q1: Is this sealing ring compatible with all 3500 Series engines?
A1: This part (6404003-3500) is specifically designed for the 3500 Series common rail injector repair kit. It is a sealing ring component used within the injector assembly. We recommend verifying your existing part number or consulting your engine’s service manual to confirm fitment for your specific engine variant.

Q2: What is the recommended installation procedure for this sealing ring?
A2: Installation should be performed by a qualified diesel technician. Ensure the injector mating surfaces are clean and free of debris. Lubricate the sealing ring lightly with clean diesel fuel or assembly lubricant before installation. Do not reuse old sealing rings. Tighten the injector retaining nut to the manufacturer’s specified torque to avoid damage or leaks.

Q3: How should I store unused sealing rings?
A3: Store the sealing rings in a cool, dry place away from direct sunlight and extreme temperatures. Keep them in their original packaging to prevent contamination or deformation. Proper storage ensures the elastomeric properties are maintained for future use.

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 .