Our products

Engines for shipping & industry

Leading engine manufacturers as Lister-Petter, Raywin and HD Hyundai infracore trust the know-how, reliability and characteristic down-to-earth approach of De Maas BV.


De Maas deliver and maintaining generators of the high quality brand Mecc Alte for many years. It is a reliable and high technically brand with an excellent reputation.

Engine Parts

A reliable parts supply is absolutely necessary in this demanding industry. We assure this by delivering the most parts directly from stock.


We offer state of the art generator sets. Lister-Petter, Raywin or HD Hyundai infracore diesel engine powered; whether or not in combination with a Mecc Alte generator and Emssion certified IMO Tier 3 and /or Stage V emission.

Order Engine Parts on-line?

In addition to the brands HD Hyundai infracore, Lister Petter, Raywin and Mecc Alte, we also supply parts for other brands. Do you need specific parts? Our parts department can help you to select the correct parts.

Turnkey projects

We not only supply engines and generator sets of our famous brands; our technicians can advise the best choice of the available range. We can create installations in according to customer-needs.. We also , assemble and do the on-site commission.

Technical expertise


We have almost 100 years of experience in the industry. As a customer you do have the optimum benefit.


Our technicians are pleased to give you objective advice for the best solution of engines and / or generator sets.


Our products are extreme tested in our ultramodern test facilities in Zwijndrecht the Netherlands.