I quit buying oil filters on Amazon after the great Honda filter debacle..they were pretty good counterfeits, you would not have known unless you cut them open...some folks basically drove their Hondas with no oil filter ..for a long time if they bought a case. On a related note, my son got some counterfeit water line filters for his refrigerator on Amazon...i noticed they were very lightweight so i cut one open with a hack saw..basically nothing but a tube inside...lots of money to be made there since those things go for ~$50. So, I don't buy them on Amazon either.