Product Details

Product Overview

This high-quality Piston Ring set, encompassing OEM numbers 3683008, 3681078, and 3682398, is specifically engineered for the Cummins QSX15 diesel engine. As a critical component for maintaining compression and oil control, this ring set is manufactured to meet or exceed OEM specifications. We provide global shipping solutions, serving major markets including North America, Europe, Southeast Asia, the Middle East, and Africa, ensuring rapid delivery to industrial hubs and ports worldwide.

Key Features & Benefits

• Superior Durability: Constructed from high-grade ductile iron with advanced wear-resistant coatings for extended service life in demanding applications.
• Optimized Compression: Precision-machined ring profiles ensure a perfect seal, maximizing engine compression and power output.
• Excellent Oil Control: Advanced oil ring design minimizes oil consumption while ensuring proper cylinder wall lubrication.
• Direct Fitment: Manufactured to exact OEM dimensions (3683008, 3681078, 3682398) for a hassle-free installation without modifications.
• Rigorous Testing: Each ring set undergoes strict quality control checks, including tensile strength, hardness, and dimensional verification.

Technical Specifications

OEM Cross-Reference

This piston ring set is a direct replacement for the following genuine Cummins OEM part numbers:

• Primary OEM: 3683008 (Top Ring), 3681078 (Intermediate Ring), 3682398 (Oil Ring)
• Alternative/Service Numbers: AR12534, AR12535, AR12536 (May apply to specific production runs)
• Compatible Series: QSX15-G, QSX15-T, QSX15-600, QSX15-650

Compatibility

This piston ring set is specifically designed for the Cummins QSX15 engine family. Common applications include:

• Mining Trucks: Komatsu HD785, Caterpillar 777 (with Cummins QSX15)
• Construction Equipment: Excavators, Bulldozers, Wheel Loaders (e.g., Komatsu PC1250, PC2000)
• Generator Sets: Cummins QSX15-G series (400-600 kW range)
• Industrial Pumps & Compressors: Stationary and mobile power units

Note: Always verify your engine’s serial number and existing ring dimensions before ordering to ensure perfect fitment.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping via DHL, FedEx, UPS, and sea freight (FOB/CIF) to over 50 countries.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (Australia, Indonesia, Singapore), Middle East (UAE, Saudi Arabia, Qatar), and Africa (South Africa, Nigeria).
• Fast Delivery: Stock items are dispatched within 24-48 hours. Express shipping to major industrial centers like Houston, Dubai, Singapore, and Rotterdam typically arrives in 5-7 business days.
• Export Compliance: All products are sourced and exported in full compliance with international trade regulations.

Quality Assurance

• Manufacturing Standard: Produced in ISO 9001:2015 certified facilities, adhering to strict quality management systems.
• Material Certification: Raw materials are traceable and tested for chemical composition and mechanical properties.
• Testing Procedures: Each batch undergoes 100% dimensional inspection, hardness testing, and a microstructural analysis.
• Warranty: We offer a standard 12-month warranty against manufacturing defects, covering material and workmanship.

FAQ

Q: Are these rings a direct fit for my Cummins QSX15 engine?

A: Yes, these rings (3683008, 3681078, 3682398) are designed as a direct OE replacement for the QSX15 series. However, engine specifications can vary by year and application. We strongly recommend comparing the ring profile and dimensions (thickness, width) with your original rings before installation. If you have your engine serial number, please contact us for precise compatibility confirmation.

Q: What is the recommended installation procedure for these piston rings?

A: Installation should be performed by a qualified mechanic. Key steps include: 1) Clean the piston ring grooves thoroughly. 2) Use a piston ring expander tool to avoid twisting or breaking the rings. 3) Ensure correct ring orientation: the top ring (3683008) is typically marked with a dot or “TOP” facing upward. 4) Stagger the ring end gaps at 120-degree intervals around the piston, and ensure they are not aligned with the wrist pin. 5) Lubricate the rings and cylinder walls with clean engine oil before assembly. Always consult the Cummins QSX15 service manual for specific torque and clearance values.

Q: How can I verify the quality of these piston rings before purchasing in bulk?

A: We welcome quality verification. You can request a free sample set for inspection and fitment testing. We can also provide Material Test Certificates (MTC) and dimensional inspection reports upon request. For bulk orders, we can arrange for a third-party inspection (e.g., SGS, BV) at our facility before shipment to guarantee compliance with your 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 .