The Cummins QSB 6.7: Powering the Swift Trawler 34 and Dozens More
The Cummins QSB 6.7 is one of the most widely installed marine diesels of the last fifteen years. It shows up in trawlers, express cruisers, sportfishers, and pilot house boats…

The Cummins QSB 6.7 is one of the most widely installed marine diesels of the last fifteen years. It shows up in trawlers, express cruisers, sportfishers, and pilot house boats…