K&N High Flow Air Filter - E-3225

K&N E-3225 high-flow air filter for V-twin motorcycles, built with pleated cotton-gauze media to increase airflow while maintaining filtration. Pre-oiled, washable, and designed to drop into the OEM airbox without fuel management changes.

Features

• Pleated cotton-gauze media for increased airflow
• Large filtration area extends service intervals
• Multi-layer woven cotton construction
• Direct OEM airbox fit with application-specific sealing bead
• Washable and reusable — pre-oiled and ready to install
• Fuel management modifications typically not required
• Manufactured in the USA

Specifications

• Brand: K&N
• Manufacturer Part #: E-3225
• UPC: 024844003744
• Length: 6.31 in
• Width: 6.56 in
• Height: 3.5 in
• Weight: 0.68 lbs

Fitment

Fits V-twin motorcycles. Verify your specific bike model and year before ordering to ensure OEM airbox compatibility.

Frequently Asked Questions

Do I need a tuner or ECU flash with this filter?

Fuel management modifications are typically not required. The filter alone should not necessitate remapping.

How often should I clean and re-oil it?

Inspect the filter every oil change. Clean and re-oil when visibly dirty — usually every 10,000–15,000 miles depending on riding conditions.

What's included in the box?

The filter arrives pre-oiled and ready to install. No additional service kit is needed at purchase.

Will this fit my airbox without modifications?

Yes — the application-specific sealing bead ensures a precise OEM airbox fit without drilling or adapting.

Is it really made in the USA?

Yes. K&N has manufactured filters in the USA for over 40 years.