It happens all the time, I recently had a crack in a seal around the fuel pump, but it was all one piece so I needed a new fuel pump. It's also a 12 year old ca

It happens all the time, I recently had a crack in a seal around the fuel pump, but it was all one piece so I needed a new fuel pump. It's also a 12 year old car, has had only 1 other minor problem, and the pump was a cheap fix, so I don't feel I got ripped off on that particular repair. Manufacturers could do a much better job on this kind of thing, but not everything can be completely modular, and even if that was practical from a design perspective, the labor involved could often outweigh the cost of replacing the thing.