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K&N 25-4250

Oval Straight Airforce Pre-Cleaner Inside length: 4.5 in (114 mm)

K&N 25-4250


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K&N 25-4250 Oval Straight Airforce Pre-Cleaner Inside length: 4.5 in (114 mm) $12.99
Oval Straight Airforce Pre-Cleaner
  • Inside length: 4.5 in (114 mm)
  • Inside width: 3.25 in (83 mm)
  • Height: 1.5 in (38 mm)

  • K&N 25-4250 Details

    Oval Straight

  • Foam Filter Wrap
  • Extend The Service Interval
  • Used In Very Dusty Conditions
  • Made w/Large Open Cell Foam
  • Stop 90 percent Of The Dirt
  • Add A 2 percent Restriction
  • Can Be Cleaned
  • Custom Made To Fit

  • Specifications:

    Height (in.)
    Diameter (in.)
    3.25 /4.5
    Oval Tapered
    Overall Length (in.)
    Filter Material
    Wrap Type
    Airforce Pre-Cleaner
    Air Filter Bottom Measurement (in.)
    4.500 L x 3.250 W
    Air Filter Style
    Air Filter Top Measurement (in.)
    4.500 L x 3.250 W
    Sold individually
    Manufacturer's Part Number:

    K&N Airforce Pre-Cleaners are foam filter wraps designed to extend the service interval of K&N Filterchargers that are being used in very dusty conditions. Made from large, open-cell foam, Airforce Pre-Cleaners will stop 90% of the dirt yet restrict the filter's airflow by only 2%. Red and yellow Pre-Cleaners are made for use with K&N Filter Oil, and they must be cleaned with K&N Cleaner or soap and water. Gray colored pre-cleaners are made with smaller foam cells that do not use oil. They are designed to be cleaned with K&N Air Filter Cleaner or soap & water.

  • Blocks 90 percent of the dirt before it gets to your filter
  • Only restricts your airflow by 2 percent
  • Red and Yellow Pre-Cleaners use K&N filter oil and the Gray Pre-Cleaners do not

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