We offer a variety of diesel powered hot water trailer jetter options. Our HotJet D Series trailer jetters feature your choice 26HP or 29HP Kubota or Kohler engines with 8-10GPM @ up to 4,000 PSI. If you are interested in the maxium power diesel machine, our Big Daddy Hot Water Diesel is a monster! With a59HP Kubota Turbo Engine, it has an output of 18GPM @ 4,000 PSI. Call us at 800-624-8186 with your diesel powered hot water trailer jetter questions. We will engineer & manufacture a machine that is to your specifications.