Spec on that is like .003-.005 if I remember right. I have a few shims for one. That one is a PITA..
how accurate is that HF tool? try a different measuring device?
I just ordered more parts. It's come up in conversation several times that lowering the microns of filtration is a very good idea for a diesel truck especially comen rails. Unfortunately the diesel places want a small Fortune for the filter and water separator set ups so I did a bunch of research and bought it in pieces online and it will be here Sunday so I can put it in before the cab goes back on. I figure I can always upgrade the filters so I went with wix for now but next service I'm going 1 micron. Doing it the way I did I got the dual mount the fittings and the filters for $140
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