Product Overview

This Common Rail Injector Repair Kit Sealing Ring, part number 6406003-3126, is a high-precision replacement component designed specifically for the Caterpillar 3126B diesel engine. Manufactured to meet stringent OEM standards, this kit provides a reliable solution for restoring injector performance and preventing fuel leaks. Ideal for global B2B buyers, we ship to major markets including North America, Europe, Asia-Pacific, the Middle East, and South America, ensuring fast and efficient delivery to ports and industrial hubs worldwide.

Key Features & Benefits

• OEM Standard Quality: Manufactured from premium steel, ensuring durability and resistance to high-pressure diesel fuel systems.
• Precision Fit: Engineered to match the exact dimensions of the 6406003-3126 specification, guaranteeing a perfect seal for the 3126B injector.
• Leak Prevention: The sealing ring effectively prevents fuel bypass, maintaining optimal injection pressure and engine efficiency.
• Cost-Effective Repair: Offers a complete repair solution without the need for a full injector replacement, reducing downtime and maintenance costs.
• Reliable Performance: Tested for consistent performance under extreme operating conditions, ensuring long service life.

Technical Specifications

OEM Cross-Reference

• Primary OEM Number: 6406003-3126
• Alternative Number: 6406003
• Compatible Systems: Designed for Caterpillar Common Rail Injectors on the 3126B engine platform.

This repair kit is a direct replacement for the original injector sealing components. Always verify your existing part number matches 6406003-3126 or 6406003 before ordering.

Compatibility

• Engine Model: Caterpillar 3126B Diesel Engine
• Vehicle Applications: Commonly used in medium-duty trucks, buses, and industrial equipment powered by the Cat 3126B engine.
• Year Range: Typically compatible with engines manufactured from the late 1990s through the mid-2000s. Check your engine serial number for confirmation.
• System Type: Common Rail Fuel Injection System.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping to all major global destinations via air, sea, and express courier services (DHL, FedEx, UPS, TNT).
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, France, Netherlands), Asia-Pacific (Australia, Japan, Singapore), Middle East (UAE, Saudi Arabia), and South America (Brazil, Chile).
• Fast Delivery: Stock is held in Shandong, China, ensuring quick dispatch to major ports like Qingdao, Shanghai, and Shenzhen.
• Export Experience: Over 10 years of experience in international trade, ensuring compliant documentation and customs clearance support.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities, adhering to strict quality control processes.
• Testing: Each batch is tested for dimensional accuracy and material integrity to ensure a leak-free seal under high pressure.
• Warranty: We provide a 4-month warranty against manufacturing defects. Our professional service team is available for post-sale support.

FAQ

Q: Is this sealing ring compatible with the standard Cat 3126 (non-B) engine?

A: This part (6406003-3126) is specifically designed for the Cat 3126B engine. While the standard 3126 uses a different injector design, we recommend cross-referencing your injector part number to confirm fitment. The 3126B features a HEUI common rail system which requires this specific seal profile.

Q: What is included in the repair kit?

A: This listing is for the sealing ring (6406003-3126) itself, which is the critical component for preventing fuel leaks in the injector bore. It is a single-piece steel ring. For a full injector overhaul, you may need additional components like O-rings and washers, which are sold separately.

Q: How do I install this sealing ring correctly?

A: Installation requires careful handling. The sealing ring should be lubricated with clean diesel or assembly oil before being placed into the injector bore. Use a seal installer tool to press it evenly into place. Avoid using excessive force or sharp tools that could damage the ring’s sealing surface. Torque the injector retaining bolt to the manufacturer’s specification to ensure a proper seal.

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 .