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Part number: E-3900
Universal product
Product Details
K&N E-3900 Custom Air Filter
Products specifications
Air Cleaner Top Style Open
Air Filter Shape Rectangular
Air Filter Style Rectangular
Filter Color Red
Filter Material Cotton gauze
Filter Re-Oiling Amount 0.37 oz (11 ml)
Flanges None
Height 1.688 in (43 mm)
Height (in) 1.687 in.
Inner Wire No
inside Length 5.875 in (149 mm)
Inside Width 3.375 in (86 mm)
Length (in) 6.625 in.
Outside Length 6.625 in (168 mm)
Outside Width 4.25 in (108 mm)
Package Contents 1 Air Filter
Package Quantity 1
Product Style Rectangular Air Filter
Quantity Sold individually.
Size 6-5/8in x 4-1/4in x 1-11/16inHin
Top Material/Finish None
Width (in) 4.250 in.
Flange Angle 0 degrees
Flange Inside Diameter 0 in (0 mm)
Flange Length 0 in (0 mm)
Weight 0.5 lb (0.2 kg)

K&N's lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N's replacement air filter is custom-designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. Simply remove the disposable air filter and replace it with a K&N air filter; no cutting or fitting is required. The filters are washable and reusable and are backed by K&N's million mile limited warranty.

  • Filters are washable and reusable and are backed by K&N's million-mile limited warranty
  • Fits into existing factory air box, no cutting or fitting is required
  • Designed to increase horsepower and acceleration
  • High air flow with excellent filtration
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Great n easy
Very happy with my purchase and product from Autoplicity! Highly recommend.
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Order arrived 1 day sooner than expected with correct components.  Did get multiple duplicate e-mails confirming order but when I e-mailed customer service to make sure my order was correct and charged appropriately they replied within a few hours. Overall I was pleased with price and service.
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Return Policy
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