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4 Posts
I also replaced a bad o-ring on my power steering reservoir cap. The new ring looked dimensionally exactly like the old one I removed. The new one at 1-5/16" ID and 3/32" thickness made the cap fit nice and tight while the old o-ring had the cap just kind of sit there lightly and would spit little drops of ATF fluid to odd places when starting the van like some mystery leak. Now that I know the size, I can order a Viton (FKM/Flourocarbon) or Nitrile (Buna-N/NBR) replacement.