[Preacher]

A couple of weeks ago i started my car and while cleaning the windscreen my engine cut out, just sounded like someone had turned the ignition off, i tried to restart but no luck, the engine just turned over but would not start, the garage managed to run it by putting clean fuel directly in the engine, so they say it needs a new petrol pump (they have checked the filter after reading forums and tell me it's not that issue) plus my car only has one fuel pump, my question is where can i get tested used pump from? i can see loads online but not sure if they are right for my car

Many thanks