65.02501-8236 Piston Ring for Doosan Daewoo D2366 DE12

The 65.02501-8236 piston ring set fits Doosan Daewoo D2366 and DE12 series engines. It serves as a reliable OEM replacement solution. In addition, it suits engine overhaul projects for large excavators, heavy-duty trucks, diesel generator sets, and other construction equipment.

RJT PARTS manufactures these piston rings with high-chrome alloy cast iron. Furthermore, we apply chromium plating and nitriding treatments to improve durability. As a result, the rings offer excellent wear resistance and high-temperature performance. They also provide reliable sealing under demanding operating conditions.

These piston rings help reduce engine oil consumption. In addition, they minimize blue smoke emissions. They also help maintain proper cylinder compression and prevent power loss. Therefore, they improve engine efficiency and extend service life.

The rings match OEM dimensions with high accuracy. As a result, technicians can install them directly without modification. Moreover, RJT PARTS keeps stock available for bulk orders. We also provide product warranty and professional customer support.

Parameters

OE Part Number: 65.02501-8236
Compatible Engines: Doosan Daewoo D2366, DE12, DE12T
Compatible Equipment: DH420/DX420 large excavators, heavy trucks, diesel generator sets, mining machinery
Standard Cylinder Bore: 123mm
Piston Ring Configuration: 2 compression rings + 1 coil spring combination oil ring (single cylinder set)
Common Specifications: STD standard size; optional +0.25mm, +0.50mm enlarged maintenance size
Material: High chromium alloy cast iron
Surface Treatment: Nitriding + hard chrome plating
Compatible Cylinders: 6-cylinder engines (complete set)
Packaging: Vacuum-sealed moisture-proof packaging, neutral export packaging supported
Warranty Period: 6–12 months

Core Advantages

• First, we produce each piston ring with precise OEM tolerances. You can install these rings directly without extra grinding or modification. They fit perfectly on all turbocharged D2366 and DE12 engines and save your maintenance time.
• Second, we adopt high-chrome base material plus chrome and nitriding treatment. The surface gains high hardness. It resists high temperature, deformation, wear and carbon buildup. These rings work reliably under continuous heavy loads in mines, steel plants and ports.
• Third, compression rings lock cylinder pressure well and restore engine power. Meanwhile, combined oil rings scrape excess lube oil off cylinder walls efficiently. They fix common faults such as high oil consumption, blue exhaust smoke, hard startup and excessive fuel use.
• Fourth, these piston rings adapt to various working scenarios. They run stably on large excavators, generator sets, heavy trucks and stationary industrial power equipment. You will get low repair rates for long-term use.
• Finally, we keep sufficient stock for standard and oversize specifications all year round. We supply bulk orders for repair shops, equipment leasing firms and international spare parts distributors. We offer OEM packaging, fast delivery and reliable after-sales warranty.

Other Doosan Daewoo Piston Rings

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