K&N YA-3504 High-Flow Air Filter for 04-14 Yamaha ATV (Bruin/Grizzly/Wolverine)

Vehicle Fitment

• 2004-2006 Yamaha YFM350 Bruin 2x4 / 4x4
• 2004-2006 Yamaha YFM400 Kodiak 2x4 / 4x4
• 2006-2009 Yamaha YFM350X Wolverine 2x4
• 2006-2010 Yamaha YFM450FX Wolverine 4x4
• 2007-2014 Yamaha YFM350 Grizzly 4x4 (auto / IRS / EPS variants)
• 2007-2014 Yamaha YFM450 Grizzly 4x4 (various trims, including EPS / hunter / outdoorsman editions)

Fitment Notes

• Filter is designed for OEM airbox drop-in - will not fit non-stock or heavily modified airboxes without verification.
• If ATV has aftermarket modifications (airbox, intake snorkel, engine mods), verify airbox dimensions before ordering.
• Fitment information is based on standard engine and trim configurations listed by K&N and catalog vendors.

Features

• High-flow cotton gauze media for improved airflow and performance
• Washable and reusable construction - long service life
• Pre-oiled and ready to install out of the box
• Application-specific sealing bead ensures secure OEM airbox fitment
• Pleated media with large surface area for extended service intervals under off-road conditions
• Durable frame and construction for rugged ATV use
• Maintains engine protection while improving throttle response
• Reduces frequency of disposable filter replacement - cost effective over time

Specifications

• Filter Shape: Round/straight (cylindrical-style air filter for ATV applications)
• Media: Multi-layer cotton gauze (pleated)
• Washable / Reusable: Yes
• Outside Diameter: 3.875 in (≈ 98 mm)
• Inside Diameter (inlet): 2.5 in (≈ 64 mm)
• Height: 5.875 in (≈ 149 mm)
• Filter re-oil amount (service): ~0.79 oz (≈ 23 ml)
• Package Contents: 1x air filter

Included Components

• 1x K&N YA-3504 Air Filter (pre-oiled, ready to install)
• 1x Instruction / maintenance sheet

Product Description

The K&N YA-3504 is a premium, high-flow replacement air filter engineered specifically for a wide range of Yamaha ATVs including Bruin, Kodiak, Grizzly, and Wolverine series. Its pleated cotton-gauze media significantly improves airflow into the engine compared to stock paper filters, which can result in improved throttle response and overall performance - especially during off-road, dusty, or demanding riding conditions.

Designed for direct drop-in fitment into the OEM airbox with an application-specific sealing bead, the YA-3504 requires no modification. The filter arrives pre-oiled and ready to install. For maintenance, simply clean, dry, and re-oil according to K&N's instructions - no frequent replacements needed. This filter is ideal for ATV owners seeking durable, reusable filtration that supports both performance and long-term reliability.