K&N Engineering AC-4004 Off-Road Replacement Air Filter for Arctic Cat 4x4 and UTVs

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. K&N Replacement Air Filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. K&N air filters are washable and reusable and provide high air-flow with excellent filtration.

• Designed to provide increased horsepower and acceleration specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides
• Fits directly into OEM air box with application specific sealing bead ensuring a precise fit
• Pleated media provides a large filtration area offering long service intervals
• No fuel management modifications are required to obtain increased performance
• Multiple layers of woven cotton gauze media offers excellent filtration
• Washable & reusable, most are pre-oiled and ready to ride
• One Year Limited Warranty

The K&N Engineering AC-4004 replacement air filter is designed specifically for off-road vehicles such as ATVs, UTVs, and side-by-sides, including various Arctic Cat models from 2005 to 2006. This high-performance filter features pleated media that provides a large filtration surface, ensuring long service intervals and reliable protection against dust, dirt, and debris encountered during off-road adventures. Its application-specific sealing bead guarantees a precise fit into the OEM air box, maintaining optimal airflow and engine performance without requiring modifications to fuel management systems. This filter is pre-oiled and ready to install, simplifying maintenance and reducing downtime for off-road enthusiasts. The washable and reusable design offers an eco-friendly solution that maintains high airflow and filtration efficiency over multiple uses, making it a cost-effective choice for demanding riding conditions. Whether tackling dusty trails or high-altitude terrains, this filter helps ensure clean carburetion, increased horsepower, and improved acceleration, enhancing your vehicle’s overall off-road performance.

Constructed by K&N Engineering, a trusted name in performance filters, the AC-4004 is engineered to withstand harsh riding environments while providing consistent filtration and airflow. Its durable construction and proven filtration media help protect your engine from harmful particulates, extending the lifespan of vital engine components. This filter complies with relevant standards and does not require any fuel management adjustments to deliver noticeable performance improvements. Suitable for a range of Arctic Cat models, including 400 and 500 series, it offers an excellent upgrade for riders seeking reliable, maintenance-friendly filtration that enhances off-road capabilities.

Features:

• Designed for increased horsepower and acceleration for off-road vehicles, including ATVs, UTVs, and side-by-sides

• Fits directly into OEM air box with application-specific sealing bead for precise fit

• Pleated media provides a large filtration area, ensuring long service intervals

• No fuel management modifications needed for performance gains

• Multiple layers of woven cotton gauze media offer excellent filtration and airflow

• Washable and reusable, pre-oiled and ready to install

• Durable construction protects engine in dusty and dirty environments

• Backed by a one-year limited warranty