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The K&N E-4665 replacement air filter is constructed with an oil-free synthetic media.The E-4665 provides superior filtration protecting your equipment's engine. This K&N air filter can be cleaned and used again, lasting the life of your equipment.


  • Washable and reusable
  • Ease of maintenance
  • Superior filtration protects the engine
  • Easy to install
  • Oil-free synthetic media


Height: 2.25in (57mm)

Inside Diameter: 5.5in (140mm)

Outside Diameter: 7in (178mm)


Compatiable with:

37 EFI 

40 EFI 

Mud Buddy 5000 

K&N 4665 Air Filter

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