The DP S55 starter was the first gear-reduction Class 8 starter introduced to the N.A. truck market in 1998. Setting the industry standard for over 15 years, Peterbilt, Kenworth, International, Freightliner, Volvo, and Mack have made the Mitsubishi Electric DP S55 HD Starter their standard starter of choice with confidence. Make sure to spec the DP S55 when spec’ing your new trucks – one less thing to worry about! The DP S55 is available in the aftermarket through our Diamond Gard™ All-Makes program, which provides coverage of nearly every truck/engine combination since 1998. Upgrade now to Mitsubishi Electric with confidence! We won’t let you down!