Niigata (OEM) Authorized Engine Repair and Overhaul Services

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As an authorized service provider for Niigata for more than 15 years, we offer Niigata engine repair services to keep Niigata engines running efficiently. Niigata Engines are trusted by maritime professionals worldwide for efficient vessel operation and ensuring safety at sea. To maintain this reliability, timely repair, overhaul, and inspections prevent unexpected breakdowns, ensuring uninterrupted operations and adherence to schedules.

Our team of skilled engineers is dedicated to providing comprehensive support for the whole process of overhauls, fault diagnosis, commissioning, and alignments, whether it’s offshore or onshore. Alternatively, we offer repair services at our state-of-the-art workshop in Mumbai. We take pride in our work and back it up with a robust 6-month warranty on all completed engine repairs.

Affiliated with Niigata Engines, a renowned entity under IHI Power Systems in Japan, our credibility and expertise are underscored. With an exclusive 15+ year partnership as the Niigata distributor, we cater to a diverse clientele. We have a strong presence in key locations, including India, the Middle East, Europe, and Africa. Additionally, we have a robust presence in major Indian dry-docking regions like Mumbai, Cochin, Goa, Kolkata, Chennai, Visakhapatnam, and Haldia, ensuring that our services are readily available to vessel owners and managers.

Get the Best Quote for Your Niigata Engine Repair Requirements

Challenges in Niigata Engine Repair and Overhaul

  • Specialized tooling: Certain repairs on Niigata engines might require specific tools or diagnostic equipment created for these engines. Lack of access to these tools can extend overhaul times or force service centers to invest in additional equipment.
  • Varying engine models: Niigata offers a range of engine models. Technicians may require additional training or experience for specific models, especially when dealing with less common variants.
  • Potential obsolescence: As with any machinery, older Niigata engine models might have parts that are no longer in production. Repairs for these engines may involve custom fabrication or sourcing used parts, increasing complexity.
  • Technical complexity: Niigata engines are technologically advanced machines. Troubleshooting problems and performing repairs can be complex and require specialized diagnostic tools.

Why Choose Us for Niigata Engine Repair and Overhaul Services?

Service Provider

As an OEM-authorized repair service Read more


With 15+ years of OEM experience Read more

Shortest Turnaround Time

Our top priority is delivering swift Read more

Remote and On-Site Support

In addition to our on-site Niigata diesel Read more

Genuine and Optimized Spare Parts List

We maintain a comprehensive Read more

Utilization of Advanced Technology

We use the most current tools and Read more

Get a Quick Quote for Your Niigata Engine Repair Requirements

Niigata Engine Repair and Overhaul Service Expertise with Engine Models

8L28HLX 6MG28BX 6L28HX 6L25HX 16V32CLX
6PA5L 6MG28AHX 6L28BXE 6L25CX 16PA5V
6NSE-G 6MG25BX 6L28BX 6L22HLX 12V32CX
6NSD-M 6MG16X-A 6L28AHX 6L13A 12V32CLX
6MG31EZ 6L34HX 6L26HLX 16V34HLX

Niigata Z-Peller Repair and Overhaul Service Expertise with Engine Models

ZP-31B ZP-31 ZP-31CL ZP-41
ZP-41A ZP-51CPCL ZP-2A-1 ZP-41CL
ZP-21CL ZP-21/2A ZP-21/3A ZP-21

Beyond Repair and Overhaul for Your Niigata Engine

At Neptunus, we believe in promoting long-term strategic alliances with our customers, prioritizing customized asset reliability management program over short-term assignments. By understanding their requirements, we identify our roles in achieving their larger goals of operational efficiency in a cost-effective, reliable, and sustainable manner. We overcome maintenance hurdles with the latest technology at our disposal.

Today, with our proprietary, dual-class (ABS and IRS) approved marine engine monitoring system system and our in-house comprehensive Oil quality management featuring real-time oil condition monitoring , continuous kidney loop filtration system , we have helped our customers to:

  • Save between ~$20,000 and $60,000+ in overhaul costs for Niigata engines (approximately over 30% of overhaul costs).
  • Prevent unplanned downtime.
  • Improve fuel combustion efficiency.
  • Reduce your Scope 1 and Scope 3 emissions to achieve your decarbonization and ESG goals.
  • Comply with the IMO’s EEXI Regulation.
  • Plan maintenance requirements better, especially for assets in inconvenient locations.

If you aim to achieve similar objectives for your company, schedule a “discovery call” with our experts to explore how we can assist you.


In addition to our Niigata engine services, we are an authorized service provider for emd engine overhaul services and an independent service provider for CAT engine repair services , offering a comprehensive suite of solutions for the marine and oil & gas industry. Our repair services for machines cover a broad range, including marine engine repair , propulsion system repairs, and genset repair. With our expert team, we guarantee top-notch service and reliability for all your machinery needs, from engines to propulsion systems and beyond.

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