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 air filters for 2004 Honda TRX400EX models offer an optimal blend of high air flow, filtration efficiency, durability and dust capacity. K&N Honda filters are designed to add performance.

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
It improved the performance of my quad.
Joshua Larios, Los Angeles, California
Replacement Air Filter
K&N HA-4099
  • Designed to Increase Power and Acceleration
  • Washable and Reusable
HA-4099 2004 Honda TRX400EX 397 Replacement Air Filter
List Price: $84.69
Your Price: USD $62.99
In stock
2004 Honda TRX400EX 397 - All Models
ATV
Powerlid Airbox Cover
K&N HA-4099-T
  • Replaces Air box Lid
  • Washable and Reusable
HA-4099-T 2004 Honda TRX400EX 397 Powerlid Airbox Cover
List Price: $171.39
Your Price: USD $110.99
In stock