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K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098 by K&N Engineering - front view
K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098 by K&N Engineering - angle view
K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098 by K&N Engineering - detail view
K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098 by K&N Engineering - installed view
K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098 by K&N Engineering - close-up
K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098 by K&N Engineering - alternate view
K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098 by K&N Engineering - side view

K&N Engineering Part # KNNHA-4098

K&N 98-00 Honda CB400 VTEC 400 Replacement Air Filter - HA-4098

$64.99 USD

Before you order

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Ships from Buffalo, NYOur U.S. warehouse
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K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle.
Installation Instructions

  • ENGINEERED POWER: Increases performance by delivering high airflow that can help improve horsepower, acceleration, and engine response without typically requiring fuel-management modifications.
  • PREMIUM ENGINE PROTECTION: Layers of premium cotton gauze treated with a specially designed tacking agent work to trap dirt & contaminants.
  • WASHABLE & REUSABLE: K&N pre-oiled washable filters offer a longer service life, helping reduce replacement costs while supporting extended maintenance intervals.

  • Inside Diameter: 2.375 in (60 mm)
  • Inside Length: 2.375 in (60 mm)
  • Base Outside Width: 2.938 in (75 mm)
  • Outside Width: 2.938 in (75 mm)
  • Top Outside Width: 2.938 in (75 mm)
  • Base Outside Length: 3.75 in (95 mm)
  • Outside Diameter: 3.75 in (95 mm)
  • Outside Length: 3.75 in (95 mm)
  • Top Outside Length: 3.75 in (95 mm)
  • Height: 5.688 in (144 mm)
  • Air Filter Material: Cotton Gauze
  • Frame Design: Flexible
  • Air Filter Shape: Oval
  • Top Style: Rubber
  • Filter Re-Oiling Amount: 0.49 oz (14 ml)
  • Inside Width: 1.5 in (38 mm)

Free U.S. standard shipping on qualifying orders $199+. Special order and made-to-order items can't be cancelled or refunded once ordered.

Shipping policy · Refund policy

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Free U.S. standard shipping on qualifying orders $199+

Ships from our Buffalo, NY warehouse

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