I have replaced this pump on mine, not due to leakage but because it just stopped running. It was a pretty straight-forward replacement, and I think I just purchased the same model. I had to do it twice because I forgot to put the vibration cushion pieces in place the first time, so had to take it back out and re-install. My advice is to have some length of new hose available. In taking mine off one of the hoses (probably original) split, so I had to replace it. Required an extra trip to West Marine and more time.