K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration.
Specifications:
- Product type: Drop-In Air Filter
- Style: Round Tapered Universal Air Filter
- Shape: Round Tapered
- Media: Cotton Gauze
- Washable and reusable: Yes
- Height: 4.5 in (114 mm)
- Outside diameter: 5.125 in (130 mm)
- Flange ID: 3 in (76 mm)
- Base OD: 5.125 in (130 mm)
- Top OD: 5.375 in (137 mm)
- Re-oil amount: 0.82 oz (24 ml)
- Package contents: 1 Air Filter
- Warranty: 1 Year Limited
- Part number: HA-4099
Vehicle Applications:
- 2014 Honda TRX400X 400
- 2013 Honda TRX400X 400
- 2012 Honda TRX400X 400
- 2009 Honda TRX400X 400
- 2008 Honda TRX400EX 397
- 2007 Honda TRX400EX 397
- 2006 Honda TRX400EX 397
- 2005 Honda TRX400EX 397
- 2004 Honda TRX400EX 397
- 2003 Honda TRX400EX 397
- 2002 Honda TRX400EX 397
- 2001 Honda TRX400EX 397
- 2000 Honda TRX400EX 397
- 1999 Honda TRX400EX 397
FAQ
What does the K&N HA-4099 fit?
It fits 1999-2014 Honda TRX400X & TRX400EX. Check your exact year, make, model and engine against the vehicle application list before ordering.
Is the K&N HA-4099 washable and reusable?
Yes. The K&N media is washable and reusable; clean and re-oil it with a K&N Recharger kit instead of replacing it.
What warranty does it carry?
It is backed by the K&N 1 Year Limited Warranty.

