Over 70 years of experience in diesel engine parts reconditioning

 Re-usage of marine spares = savings for your company


MSS Motor Ship Service marine spares reconditioning technology is based on over 70-years-long experience being handed over through the generations. Our pride is well established know-how and highly qualified service engineers with practical knowledge within not only regeneration of diesel engine spare parts but also engine overhauls.

Times change and so do some elements of our technology – apart from traditional welding machines, the plasma cladding, CNC machining and up-to-date material is used. 

What will never change is the main goal: to exceed expectations of our customers and provide them with high quality, reliable products at a reasonably low price and short service time. 

Reconditioning of used marine diesel spares is the way to obtain spare parts like new on the competitive prices and time schedule with the additional environmental benefit. Our Clients may be also provided with the replacement spare part on the exchange basis what decreases the final prize of regeneration and delivery time. The parts may be stored in our two warehouses in Poland (Gdańsk/ Zielona Góra) and send on the vessel’s demand within a short time, also via air freight as it is located near the aiport.   

Our workshop is certified with DNV GL class, on the Owner’s request the regenerated spare parts may be also additionally certified with PRS class certificate.  


The scope of regeneration for 2T engine parts includes cylinder covers, jackets, piston crowns, piston skirts, exhaust valve spindles, housing, seats and cylinder liners, such as MAN B&W, Mitsui, Sulzer, Wartsila, Mitsubishi. 

We have spare parts of two-stroke engine on stock, including MAN B&W, Mitsubishi and Sulzer which may be send immediately, please check “spares from stock” and do not hesitate to contact us if there is no spare part you are interested in on the list.    


The scope of regeneration for 4T engines:


Main range of our propulsion services:

  • CPP and blades reconditioning from bronze Cu3  under class, straightening and welding casted tips for broken blades, cone surface regeneration and adjusting for propeller shaft,
  • bronze and stainless steel hub full reconditioning including radial/axial bearing fitting


For your convenience we are keeping in stock ready-to-go fully overhauled and new spare parts from Wartsila/Sulzer, MAN, MAK, Deutz, Mitsubishi, Yanmar,  Pielstick and others. All of them are prepared for long storage and carefully packed for shipment

  • MAN 
  • MAN 46 MC piston crown


  • MAN B&W 50 MC piston skirt
  • MAN B&W 50 MC piston crown
  • MAN B&W 50 MC cylinder cover


The list is being currently updated so do not hesitate to contact us directly if there is no spares you are interested in. 


Apart from the spare parts recondition, our company provides the service of  mounting and dismounting of parts on the vessel.                We are proud of  our highly experienced engineers ready for worlwide operations.    

In case you need overhauls of CPP, reduction gears, thrusters and/or marine engines, please contact our sister company: LJ Mechanics: or just let us know about your needs or problem – we would be happy to help you. 


Our company located in Poland has now two branches: Gdańsk and Zielona Góra and each of them has different scope of regeneration: 
Gdańsk branch: connecting rods, piston skirt 4T, valve spindle and valve seats 2T/4T, exhaust cages 4T, cylinder heads 4T, cylinder liners 4T, line boring laser measurements for all type 4T.
Zielona Góra branch: piston crown 2T/4T, piston skirt 2T, cylinder covers 2T, cylinder liners 2T/4T.

MSS Motor Ship Service sp. z o. o. sp. k.
ul. Naftowa 1,
65-705 Zielona Góra

phone: +48 609 101 550
phone: +48 663 391 807


MSS Motor Ship Service sp. z o. o. sp. k.
ul. Spacerowa 23,
83-010 Straszyn

phone: +48 885 242 234
phone: +48 663 391 807


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