Fleetguard FF5971NN Spin-On Fuel Filter, Pack of 6

Cummins Inc.
3 1/2 in.-7H
Product Type:
Micron Rating:
4 Micron
Pack of 6
8.00 LBS
WARNING: This product may contain a chemical known to the State of California to cause cancer & reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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The Fleetguard FF5971NN spin-on fuel filter ensures things run smoothly by protecting fuel system against harmful contaminants, such as: water, fungus and bacteria, precipitates, particulates, and wax with its NanoNet filtration media. Modern fuel injection systems require fuel to be free of both particulate and water contamination. Changing fuel filters prevents clogs while maintaining fuel injectors, which require fuel to be clear of particulate and water contamination. This allows fuel a clear passage to the engine for more power and better fuel mileage. The heavy duty diesel engine fuel filter replacement is quick and easy to install. Sold in packs of 6.


  • Changing fuel filters avoids symptoms of a clogged fuel injector
  • Maintains maximum efficiency of the engine
  • Filters both particulate and water contamination
  • NanoNet filter media for 4 micron rating exceeding 99.6% filtration efficiency
  • NanoNet media is a consistent size that retains particles during engine vibration


  • Filter type: Fuel
  • Thread form: Metric
  • Spin-on filter
  • NanoNet media
  • Thread class: 7H
  • Largest OD: 4.74 in.
  • Thread diameter: 3.54 in. (102 mm)
  • Thread pitch: 2.00 in.
  • Gasket OD: 4.74 in.
  • Overall height: 11.71 in.
  • 4 Micron rating
  • Filters: particulates and water
  • Pack of 6
  • 1 year / 100,000 mile Warranty


  • Cummins L9, ISL9, B6.7 & ISB6.7 engines
  • Freightliner X15 engines
  • International X15 engines
  • Kenworth X15 engines
  • Paccar ISX engines
  • Peterbilt X15 engines
  • Spartan Motors ISX and X15 engines
  • Volvo X15 engines
  • Western Star X15 engines

FF5971NN Cross Reference

  • Cummins 5575143


Specifications (PDF Download)

FF5971NN Brochure (PDF Download)