How hard is it to replace the oil pump? and is it better just to buy a rebuild kit?
WHERE EXACTLY IS THE OIL PUMP? AND HOW DIFFICULT TO REPLACE? on 1994 Dodge Grand Caravan
Replacing the oil pump commonly requires big-time engine disassembly, and it's not an easy job. My understanding is that they are most often changed during rebuilts, and don't normally fail all on their own.