Your right should have gone with oem. Those that I bought were bwd brand at oriellys, $200 instead of $250 at BMW. Not that much of a savings but on that note they have a lifetime warranty. So off I go back to oriellys a d they give me 2 new ones. No charge. Put em in and the cars running like a champ. Another sidebar moritz wanted $348 to replace intake side and $288 for exhaust side. It took me maybe 20 minutes to replace them both! F#*¥ers!