Kubota Diesel Engine Model D722. Kubota Diesel Engine Model D722, this engine was removed from a Air conditioning unit for a tractor trailer. The air filter had "changed at 3600hrs" written on it but I could not locate an hour meter. We turned the motor over sprayed some starting fluid into the intake, it coughed a little but wouldnt "run" for us. The item "Kubota Diesel Engine Model D722 Motor 3 Cylinder" is in sale since Friday, June 21, 2019.This item is in the category "Business & Industrial\Light Equipment & Tools\Stationary Engines\Engines". The seller is "mparts18" and is located in Hamilton, Ohio. This item can be shipped worldwide.