Thought I had posted this information, but apparently I did not. This filter has a 15,000  miles recommended replacement cycle. The ISB-02 Series engine uses 3 fuel filters and many Freightliner or Cummings service centers are not aware of the inline filter located in the frame rail, just behind the rear axle in most cases on the drivers side. I know of one coach where it was found  on the passengers side though ! Many shops change 2 filters and the coach still has no power. Many shops want