Last time I looked on car-parts there were not a huge number out there. I got the best setup I could find but it was a good bit more than $50. This is the one that started leaking before too long. It tested fine so I am not blaming the place I got it from but it kind of sucks to spend the money to thermal coat it, the time to wrap and swap it, only to have it begin leaking. Which is why I keep thinking that maybe swapping cores is the best choice.