Description
Listed is a NOS Genuine NAPA 3959 Fuel Filter.
Please check fitment before purchasing.
- Cummins ISB 6.7L, ISC, ISL Engines, CAT C7 (suction side) – has drain + plug-in sensor port – used w/ 3966 (pressure side)
- Sensor Port Thread Size Is 14×2 mm
- 2 Micron








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