New sealed FF266 fuel filter equipped with O‑ring. Compatible with Cummins ISF3.8, ISB6.7, ISG12, and ISL9 series engines. Replaces part numbers 5336504, 7707078, and related equivalents. Box is sealed and unused; packaging may show light shelf wear but the filter inside is new and undamaged. Great replacement option for a wide range of Cummins engines. Clean, new, and ready to ship.
