Service and Support
For GPP and our parent, Mack Boring & Parts Company, service after the sale has been a guiding principle for 90
years. Qualified service staff is continuously factory trained on the latest engines and service procedures. With
certified factory trained technicians at each of our service centers, we're capable of performing repairs to all of our
products and many others as well.
GPP generators are built with premium Mitsubishi and Isuzu diesel engines as well as high quality, brand name
alternators, controls, and components. Mitsubishi or Isuzu engine dealers worldwide, or independent diesel generator
service companies, will find GPP generators easy to service.
At our GPP training facilities, we keep our Mitsubishi and Isuzu engine dealers up to date in the latest operating
technology, service, and maintenance techniques. In addition, our state-of-the-art parts distribution center offers
same day and next day shipping anywhere in the world.
Responsive Customer Service
We support our dealers and customers with professional sales, service, on-time shipping, and helpful technical support.
We’ll help you match the right generator to your needs so that you save money while maximizing reliability and
performance. For unique needs, we’ll prepare a proposal describing the technical specifications and performance profile
of a custom built unit for your application. Before and after the sale, you can count on GPP to provide
reliable and knowledgeable support.
Contact Us
Service Phone: 908-206-3355
Service Fax: 908-964-5032
Email: service@mackboring.com
Parts Phone: 908-964-0706
Parts Fax: 908-687-6725
Parts Email: parts@mackboring.com
