Neptunus Power Plant Services is an independent service provider supporting ship owners and operators of Yanmar generators with high-quality spare parts and customized maintenance solutions. Please note, Neptunus is not affiliated with Yanmar Group, Japan.

With over three decades of experience, we specialize in comprehensive Yanmar generator services, including diagnostics, preventive maintenance, emergency repairs, and complete overhauls — all performed in line with OEM best practices. We supply a full range of genuine and high-quality Yanmar generator parts, carefully selected to maintain your generator’s original performance while optimizing maintenance costs and operational uptime.

Our engineers deliver expert on-site support for overhauls, fault diagnosis, commissioning, and alignments, whether offshore, onshore, or at our state-of-the-art workshop in Navi Mumbai. We also offer riding squad services to ensure uninterrupted vessel operations during transit. To guarantee customer satisfaction, we provide a 6-month warranty on all completed engine repairs.

Operating from Navi Mumbai, we serve customers across India, South Asia, the Middle East, Europe, and Africa, delivering fast response times and dependable service. By combining spare parts supply with repair and overhaul expertise, Neptunus helps customers achieve cost-effective lifecycle management and sustained generator reliability.