K&N E-3402 High-Flow Round Washable Cotton Air Filter 7in OD 5.5in ID 2in H

Vehicle Fitment

• Universal Fit - Round air filter box applications requiring a 7.00 in. OD x 5.50 in. ID x 2.00 in. H round filter element

Fitment Notes

• This is a universal filter - verify your airbox dimensions before purchasing
• Designed for drop-in use in factory or aftermarket round airbox housings matching the listed dimensions
• Not a direct OEM replacement for a specific vehicle - confirm fitment by measuring your existing filter

Features

• Multi-layer oiled cotton gauze media delivers up to 50% more airflow than standard paper filters
• Washable and reusable - engineered to last the lifetime of your vehicle
• Pre-oiled and ready to install straight out of the box
• Compatible with OEM vehicle electronics and MAF sensors
• Designed to increase horsepower and throttle response
• Requires cleaning only every 50,000 miles under normal driving conditions
• Will not void vehicle warranty
• Backed by K&N's 10-Year/Million Mile Limited Warranty

Specifications

• Shape: Round
• Outside Diameter: 7.00 in. (178 mm)
• Inside Diameter: 5.50 in. (140 mm)
• Height: 2.00 in. (51 mm)
• Filter Material: Multi-layer oiled cotton gauze
• Filter Color: Red
• Top Style: Open
• Emissions Legal: All 50 U.S. states

Included Components

• 1x K&N E-3402 Round Air Filter Element

Product Description

The K&N E-3402 is a high-flow round replacement air filter built for performance applications requiring a compact 7.00 in. OD x 5.50 in. ID x 2.00 in. H round element. Constructed with multiple layers of oiled cotton gauze media, it flows significantly more air than a standard disposable paper filter, translating to improved throttle response and measurable horsepower gains. Its low-profile round design makes it a direct drop-in for compatible factory or custom airboxes that match these dimensions.

Unlike disposable filters that require frequent replacement, the E-3402 is washable and reusable - only needing service approximately every 50,000 miles under normal conditions. It arrives pre-oiled, works seamlessly with OEM MAF sensors and vehicle electronics, and is fully emissions legal in all 50 U.S. states. Covered by K&N's 10-Year/Million Mile Limited Warranty, this filter is a smart long-term investment for custom builds, hot rods, or any application requiring a high-performance round filter of these dimensions.