If you don't get an answer here post over on boatdiesel.com. A lot of good/professional mechanics with a wealth of experience. Price doesn't sound crazy but not sure what is driving the need for an injection pump. May need to ask you mechanic to be more specific.
The following 1 user Likes jclark003's post:1 user Likes jclark003's post robin.joshua (01-30-2021)