$33.99 USD
MSRP $52.39 35.1% Off
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K&N E-4270 Air Filter

Replacement Filters > Replacement Industrial Air Filter
  • Washable and reusable
  • Designed for industrial and small engine applications
  • High air flow with excellent filtration
  • Ease of maintenance
  • One year limited warranty
The K&N E-4270 is a cone shaped air filter constructed with layers of woven cotton for outstanding filtration and low air restriction to help your engine run more efficiently. This air filter can be washed and reused. The E-4270 is easy to install and is custom designed to fit right into the factory air box of some United engines, as well as other applications.

[More Information on Small Engine & Light Industrial Air Filters]

Product Specifications

Air Filter Large End Diameter3.25 in (83 mm)
Air Filter ShapeTapered Conical
Base Inside Diameter2.25 in (57 mm)
Base Outside Diameter3.25 in (83 mm)
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.28 oz (8 ml)
Height4 in (102 mm)
Inner WireNo
Package Contents1 Air Filter
Package Quantity1
Product Box Height4.25 in (108 mm)
Product Box Length4.63 in (117 mm)
Product Box Width4.63 in (117 mm)
Product StyleTapered Conical Air Filter
Top Material/FinishNone
Top Outside Diameter2.875 in (73 mm)
Top StyleRubber
Weight0.4 lb (0.2 kg)

Customer Feedback

Keeps oil really clean. Only problem that I have is it's not made in the united states.

Timothy Devine
Setauket, New York
Great first experience shopping with you guys. I am also a big fan of yours on facebook. Excellent service and excellent products. One reason I bought the product was also because it's made here in the United States.

Thank you,


La jolla, California
"On a recent trip to the United states, I purchased a FilterCharger® for my MX 5, and on the day of my return I installed it immediately. I can not recall any other product I've ever purchased that made so much a difference to performance for the money. I have looked at your competitors products and have driven cars with them installed. Upon learning more about your FilterCharger®, I thought I would give it a try. Well I'm very impressed."

Christopher Halek
Melbourne, Australia