Scott.....that's the pictures!!!
That is exactly what my pump looks like and when i had a local diesel repair shop take mine apart that is exactly what my broken gear looks like. Mine broke on fourth cylinder only. Metal tag on back has Doowon logo with three different numbers and in small letters at bottom says licence Zexel. My repair shop could not get parts or calibration specs. Called an authorized Zexel repair shop and they will not touch it. Said Zexel gave Doowon licence for pump but Zexel does not support it in parts or service.
2006 DK45S
500 hours when broke
new style stop selonoid
not fixed yet
purchased new in june 2006
jammed rack in full stop, fourth cylinder broken teeth on gear when taken apart by repair shop