I've used them (Echlin remans) with ZERO problems. Just make sure it is physically identical (shape and connector plug direction)to the OEM one and all will be good.
Pop it in and check all readings (idle MAF, WOT MAF) make sur eit's reading right. If not, take it back and swap it for another. I've never had to do this with the Echlins though.
Life time warranty as well!