I've had no problem with any of them. These filters are control-main filters and only filter the solenoids and valve body. The highest pressure they see is 125 psi; anything over that gets dumped to sump by the control- main regulator valve. The magnet does not block the holes on the 8 hole filters. The only problem you can have with these filters is if they plug up and your solenoids get no fluid feed. I sell only the oem Allison filters to keep from arguing with people. I sell them for 10.00.