Blog
Uday Purohit
Nov 19, 2025
MAN marine diesel services are supported by Neptunus Power Plant Services as an independent service provider, assisting ship owners and operators with MAN engines and propulsion systems through the supply of compatible spare parts and maintenance solutions. Neptunus is not affiliated with Everllence.
At Neptunus, we provide expert MAN marine engine services, including expert repair and overhauling, ensuring optimal performance and longevity through our comprehensive services. With almost 3 decades of service experience and a team of more than 27 highly skilled engineers, we have honed our expertise in overhaul and repair operations, working on various marine vessel projects.
Our service offerings are extensive, encompassing inspection, scheduled maintenance, troubleshooting, inspections, servicing, recovery, retrofitting, and maintenance of MAN engines. We understand the critical importance of MAN engines in the maritime industry, which is why we are dedicated to maintaining efficiency and safety, ensuring smooth operations for our clients.
Our global reach and support provide efficient assistance to our customers, whether on-site or online. As an independent MAN engine repair and overhaul service provider, we aim to enhance the reliability of your engines. Our team of 6+ MAN experts provides on-site support for overhauls, fault diagnosis, commissioning, and alignments, whether offshore or onshore. Alternatively, our dedicated workshop in Mumbai offers MAN engine repair services. We provide a 6-month warranty on all completed repairs to ensure quality and reliability.Send in your Enquiry for a Quote
Send in your Enquiry for a Quote
Neptunus Power delivers specialized MAN engine repair and overhaul services designed to support the performance and reliability of marine propulsion systems. With a strong focus on technical precision and execution quality, our services are aligned with the operational demands of commercial vessels.
Our capabilities also extend to repair services for large diesel engines, enabling comprehensive support across a wide range of engine types and applications.We deliver rapid-response repair services for MAN marine engines to minimize vessel downtime during critical failures. Our team performs on-site inspection, accurate fault diagnosis, and immediate corrective actions. Each marine diesel engine repair service is designed to restore operational reliability as quickly as possible.
We execute both Major Overhaul (MoH) and Top Overhaul (ToH) services for MAN engines in line with planned maintenance schedules. Our scope includes complete disassembly, inspection, component replacement, and precision reassembly. The objective of this marine engine overhaul is to restore engine performance, efficiency, and long-term reliability.
Our troubleshooting services focus on identifying and resolving complex mechanical and operational issues in MAN engines. Using systematic diagnostics and technical expertise, we pinpoint root causes rather than temporary fixes. This ensures reliable engine performance and prevents recurring failures.
We provide detailed inspection services to assess the condition and performance of MAN engines. Our engineers evaluate critical components, identify wear patterns, and recommend necessary corrective actions. This helps operators make informed maintenance decisions and avoid unexpected breakdowns.
Our MAN engine rebuild services involve complete restoration of engines to optimal working condition. We carry out full teardown, refurbishment or replacement of components, and precise reassembly. The result is improved engine life, performance consistency, and operational efficiency.
Send in your Enquiry for a Quote
| MAN L+V48/60CR | MAN L21/31 | MAN L+V32/44CR | MAN 12V28/33D |
| MAN PA6 B OG | MAN 16 V28/33D | MAN V28/33D STC | MAN 20 V28/33D |
| MAN L27/38 | MAN 12 PA6 BOG | MAN 16 PA6 BOG | MAN 18 PA6 BOG |
At Neptunus, our Asset Reliability Management Solutions and maintenance solution is committed to forging lasting strategic partnerships with our clients, not just completing short-term projects. Our approach involves tailoring solutions to their needs, playing a vital role in achieving their overarching goals of operational efficiency in a cost-effective, reliable, and sustainable manner. We tackle maintenance challenges head-on using the most advanced technology available to us.
Today, thanks to our proprietary dual-class (ABS and IRS) approved Condition Trend Monitoring for Engine and our holistic Oil Quality Management solution which includes a Condition Monitoring for Oil, continuous Kidney Loop Oil Filtration System, we’ve been able to assist our clients in:
In addition to our repair expertise, we offer comprehensive MAN engine rebuild services, delivering complete engine restoration through precise inspection, component renewal, and performance optimization to OEM standards.
Beyond MAN engine repair services, Neptunus Power is highly regarded for its exceptional MTU engine repair and overhaul services, along with proven repair solutions for other leading engine brands. Explore the complete list of brands we service below.Fill in Details for a Quote
