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Main Engines and Generators Marine Spare Parts

OPNCO supplies genuine and OEM spare parts for a wide range of main propulsion engines and marine generator engines used aboard commercial vessels, offshore units, and specialized ships. We support shipowners, fleet managers, and technical superintendents with fast delivery of critical spare parts globally.

Japanese Main Engines

We offer spare parts for Japanese main engines known for their high reliability and efficiency, including brands such as Yanmar, Daihatsu Diesel, Mitsubishi Heavy Industries, Niigata Power Systems, and Hanshin Diesel Works. Supported models include:

  •     Yanmar 6N18AL, 6EY18AL, 6LAAL
  •     Daihatsu DK20, DK28, DS32
  •     Mitsubishi UEC45LA, UEC60LSII,  UEC50LS
  •     Niigata 6L28HX, 8L28HX, 6MG31HX
  •     Hanshin LH28G, LH36LA

Korean Main Engines

We supply parts for Korean-built engines, especially those produced under license from MAN B&W and Wärtsilä by leading manufacturers such as Hyundai Heavy Industries, STX Engine, and Doosan Engine. Supported models include:

  • Hyundai Himsen H17/28, H25/33
  • STX MAN B&W L23/30H, L21/31
  • Doosan MAN B&W 6S60MC, 6S70ME

Chinese Main Engines

OPNCO supplies spare parts for Chinese-manufactured engines widely used in domestic and international fleets, including brands such as Hudong Heavy Machinery, CSSC Marine Power, and Shanghai Diesel Engine Co. (SDEC). Supported models include:

  • Hudong MAN B&W 6S60MC, 5S70MC
  • SDEC 8NVD48A-2U, 16PC2-6V
  • Guangzhou Diesel 6320ZCd

European Main Engines

We provide complete spare parts for European main engines known for their engineering excellence, covering manufacturers such as MAN Energy Solutions, Wärtsilä, Sulzer, and Deutz. Supported models include:

  • MAN B&W 6S50MC-C, 7L27/38, 5G50ME-C
  • Wärtsilä 32DF, RT-flex50, RTA58T
  • Sulzer RTA62U, ZA40S
  • Deutz TBD620V12

Scope of Spare Parts Supply for Main Engines

  • Cylinder Liners, Pistons, Piston Rings
  • Connecting Rods, Bearings, Crankshafts
  • Fuel Injection Pumps, Nozzles, Valves
  • Turbochargers and Exhaust Valves
  • Camshafts, Governors, Hydraulic Power Units
  • Engine Control Units and Automation Systems

Why Choose OPNCO for Main Engine Spare Parts?

 
  • Genuine and OEM parts with full certification
  • Coverage for Japanese, Korean, Chinese, and European-built engines
  • Support for both current and obsolete engine models
  • Fast quotation and worldwide shipping services