I had one of my secondary filter customers come in yesterday with a no start problem. Some how he got the hair brain idea that the Racor 660R2 filter was his problem. He removed it, threw it away and installed a Car Quest #86231. It just made the no-starts more frequent. I went up to the local Car Quest store to get some specs. They couldn't help at all. Anyone out there know what micron etc. it is? Later! Frank

The part no.s stated don't ring a bell but Racor has several patents on the Duramx OEM fuel filters and all of them, regardless of manufactures name on them are made by Racor. Most other CarQuest filters are made by Wix.