2004 Honda TRX400EX 397 Air Filter

2004 Honda TRX400EX 397 Air Filter
  • Designed to increase horsepower & torque for the 2004 Honda TRX400EX with the 397 engine.
  • Washable & Reusable
  • This K&N TRX400EX air filter lasts the lifetime of your vehicle.
  • Million Mile Limited Warranty with use on Street Vehicles
K&N engine air filters for the 2004 Honda TRX400EX are designed to add power and performance by providing up to 50% more air flow to your Honda’s engine.

Your 2004 Honda TRX400EX deserves a K&N! Select the Product Info button below to see everything the air filter fits.

VehicleProduct  
2004 Honda TRX400EX 397 - All Models
ATV
Fits great. Work's like all my other K&N air filters. Great. Arrived fast.
Vincent, Colorado
Replacement Air Filter
K&N HA-4099
  • Designed to Increase Power and Acceleration
  • Washable and Reusable
List Price: $79.59
Your Price: USD $58.99
In stock
2004 Honda TRX400EX 397 - All Models
ATV
Powerlid Airbox Cover
K&N HA-4099-T
  • Replaces Air box Lid
  • Washable and Reusable
List Price: $160.99
Your Price: USD $103.99
In stock