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Let me know how they work out, because they sell them at an awesome price.
I just ran out of the case of 6 I bought a while back, and I need to stock up again. I've been hesitant on the WIX because of the issues they had a while back.
The WIX 33518/NAPA Gold 3518 used to be identical to the FL4596, but they changed design to a square cut lid seal and a weak grommet-like lower seal which tends to split. The fuel filter also has a pin in the top which opens a valve inside the filter housing standpipe. Sometimes these filters have a shorter pin than necessary which results in the valve not opening completely and this can cause lack of power concerns.