Product Details

Product Overview

This high-quality piston ring set is specifically engineered for Doosan De12, De12T, De12Ti, and D2366 diesel engines. As a critical component for maintaining compression and oil control, this ring set (OEM 65.02503-8236) is manufactured to meet or exceed OEM specifications. We supply this part globally, serving major markets including North America, Europe, Southeast Asia, the Middle East, and South America, ensuring fast and reliable shipping to industrial hubs and ports worldwide.

Key Features & Benefits

• Superior Durability: Constructed from high-grade alloy cast iron with advanced surface treatments to resist wear and scuffing.
• Optimal Engine Performance: Precision-ground profiles ensure excellent cylinder sealing, maximizing compression and reducing blow-by.
• Enhanced Oil Control: Advanced oil ring design minimizes oil consumption while maintaining proper cylinder wall lubrication.
• Direct Fitment: Manufactured to exact OEM dimensions (65.02503-8236) for a seamless, drop-in replacement without modification.
• Extended Service Life: Rigorous quality control ensures consistent hardness and tension, providing long-lasting performance in heavy-duty applications.

Technical Specifications

OEM Cross-Reference

This piston ring set directly replaces the following OEM part numbers:

• Doosan: 65.02503-8236
• Alternative Reference: D2366 Piston Ring Set

Note: Always verify your engine model and existing part number to ensure compatibility.

Compatibility

This piston ring set is compatible with the following Doosan engine platforms:

• Engine Models: De12, De12T, De12Ti, D2366
• Typical Applications: Doosan heavy construction equipment (excavators, loaders), industrial generators, and marine engines utilizing the DE12 series.

Global Supply & Distribution

• Worldwide Shipping: We offer reliable shipping via sea, air, and express couriers (DHL, FedEx, UPS) to any destination.
• Major Markets: Serving North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (China, Korea, Australia), Middle East (UAE, Saudi Arabia), and Africa.
• Fast Delivery: Stock held in strategic warehouses for rapid dispatch to major ports (Rotterdam, Shanghai, Houston, Dubai) and industrial centers.
• Export Compliance: Experienced in international trade documentation and customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities under strict quality control processes.
• Testing: Each batch undergoes dimensional inspection, material hardness testing, and surface finish analysis.
• Warranty: Backed by a standard manufacturer warranty against defects in material and workmanship.

FAQ

Q: Will this piston ring set fit my Doosan D2366 engine?
A: Yes, this set is specifically designed for the D2366 engine platform. However, we always recommend verifying your engine serial number and existing ring part number (65.02503-8236) to confirm exact compatibility, as there may be variations in ring profiles across different production years.

Q: What is the recommended installation procedure for these rings?
A: Proper installation is critical for performance. Ensure the cylinder bore is within specification and has a proper cross-hatch finish. Install rings using a ring expander to avoid distortion. Stagger the ring gaps 120 degrees apart (or per the engine manual) and ensure the oil ring expander ends do not overlap. Always refer to the official Doosan service manual for your specific engine model.

Q: Do you provide a ring gap specification for this set?
A: While we manufacture to standard tolerances, the specific ring gap must be checked and adjusted during installation based on your cylinder bore wear. Typical top ring gap for a standard bore is between 0.30mm – 0.50mm, but you must measure the bore diameter and consult the engine manual for the correct specification. We recommend installing the ring in the cylinder and measuring the end gap with a feeler gauge.

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 .