The 5.9L and 6.7L Dodge Cummins Diesel engines are the best by Roadmaster. Using the latest Pistons, Rings and engine components available. Importantly, the latest generation of OE Cummins Rings are Ceramic coated. Roadmaster uses ceramic rings too. Roadmaster engines make long life and high performance. Because there are no shortcuts here, Roadmaster will provide the best remanufactured engines to you. Don’t hesitate to call Roadmaster Engine for details or order support. 800-447-9899. Prices start $4950 exchange.