Chevy and GMC Duramax Diesel Forum banner

fuel filter wix

  1. Wix 33960 Fuel Filter may have defect

    Legally speaking........ It is my opinion that the Wix 33960 has a problem with the inner seal. The 33910 (NAPA 3910)was the forerunner to the 33960 and was manufactured by Raycor for Wix and had a thick compression inner seal so that when the filter was restricted, the seal was maintained and...