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Part number: E-2321
Universal product
Product Details
K&N E-2321 Custom Air Filter
Products specifications
Air Cleaner Top Style Open
Air Filter Outside Diameter 5.375 in.
Air Filter Shape Round
Air Filter Style Round
Diameter (in) 5.375 in.
Filter Color Red
Filter Material Cotton gauze
Filter Re-Oiling Amount 0.43 oz (13 ml)
Flanges None
Height 2.25 in (57 mm)
Height (in) 2.250 in.
Inner Wire No
inside Diameter 3.5 in (89 mm)
Outside Diameter 5.375 in (137 mm)
Package Contents 1 Air Filter
Package Quantity 1
Product Style Round Air Filter
Quantity Sold individually.
Size 5-3/8inOD x 3-1/2inID x 2-1/4inHin
Top Material/Finish None
Weight 0.7 lb (0.3 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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