K&N Engineering YA-4504 High-Flow Air Filter for Yamaha YFZ450

The K&N High-Flow Air Filter for SxS / ATV, UTV is engineered to increase airflow for improved horsepower, acceleration, and throttle response while protecting your engine. Built with premium oiled cotton gauze, this washable and reusable air filter offers a precision OEM-style fit and rugged construction for long-lasting performance on the trail, in the dunes, or on the job. The K&N High-Flow Air Filter for SxS / ATV, UTV is engineered to increase airflow for improved horsepower, acceleration, and throttle response while protecting your engine. Associated products: YA-4504PK Air Filter Wrap, 99-5000 Filter Care Service Kit Aerosol

• Designed to provide increased horsepower and acceleration specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides
• BUILT FOR DURABILITY: High dust holding capacity and rugged construction designed to perform in demanding driving conditions.
• 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 YA-4504 High-Flow Air Filter is designed for select Yamaha YFZ450 sport ATVs, delivering increased airflow to support improved horsepower, acceleration, and throttle response. Its precision OEM-style fit installs directly into the factory air box, making it a practical performance upgrade for trail riding, motocross, dunes, and demanding off-road use.

Built with multiple layers of washable, reusable oiled cotton gauze, this K&N air filter provides excellent filtration while offering high dust-holding capacity and rugged durability. Pleated filter media creates a large filtration area for extended service intervals, and the application-specific sealing bead helps provide a secure fit against the air box. No fuel-management modifications are required to obtain the intended performance benefits. The filter is generally pre-oiled and ready to ride, and it is backed by a one-year limited warranty.

Fitment: Fits 2004-2009 Yamaha YFZ450 models, including the 2006 YFZ450 Bill Balance Edition, 2007 YFZ450 SE, 2007 YFZ450 Bill Balance Edition, and 2008 YFZ450 SE. Associated products include the YA-4504PK Air Filter Wrap and K&N 99-5000 Filter Care Service Kit Aerosol. This product may require a California emissions acknowledgement where applicable. Refer to the vehicle application and installation instructions before purchase.

Product Specifications and Technical Data

• Brand: K&N Engineering
• Part Number: YA-4504
• Product Type: High-flow powersports air filter
• Application: Yamaha YFZ450 sport ATV
• Filter Media: Multiple layers of woven cotton gauze
• Construction: Pleated, washable, and reusable design
• Installation: Direct fit for the OEM air box
• Warranty: One-year limited warranty

What's Included

• One K&N Engineering YA-4504 High-Flow Air Filter

Features:

• Increased Airflow: Designed to support improved horsepower, acceleration, and throttle response on select Yamaha YFZ450 ATVs.
• Durable Off-Road Construction: High dust-holding capacity and rugged materials are built for demanding trail, motocross, dune, and utility riding conditions.
• OEM-Style Fit: Installs directly into the factory air box with an application-specific sealing bead for a precise fit.
• Washable and Reusable Media: Multiple layers of oiled cotton gauze provide excellent filtration and can be serviced for long-term use.

Fitments:
2004 Yamaha YFZ450 Base
2005 Yamaha YFZ450 Base
2006 Yamaha YFZ450 Base
2006 Yamaha YFZ450 Bill Balance Edition Base
2007 Yamaha YFZ450 Base
2007 Yamaha YFZ450 Bill Balance Edition Base
2007 Yamaha YFZ450 SE Base
2008 Yamaha YFZ450 Base
2008 Yamaha YFZ450 SE Base
2009 Yamaha YFZ450 Base
2009 Yamaha YFZ450R Base
2009 Yamaha YFZ450R SE Base
2010 Yamaha YFZ450 Base
2010 Yamaha YFZ450R Base
2010 Yamaha YFZ450R SE Base
2010 Yamaha YFZ450X Base
2010 Yamaha YFZ450X Bill Balance Base
2011 Yamaha YFZ450 Base
2011 Yamaha YFZ450R Base
2011 Yamaha YFZ450R SE Base
2011 Yamaha YFZ450X Base
2011 Yamaha YFZ450X SE Base
2012 Yamaha YFZ450 Base
2012 Yamaha YFZ450R Base
2012 Yamaha YFZ450R SE Base
2013 Yamaha YFZ450 Base
2013 Yamaha YFZ450R Base
2013 Yamaha YFZ450R SE Base
2014 Yamaha YFZ450 Base
2014 Yamaha YFZ450R Base
2014 Yamaha YFZ450R SE Base
2015 Yamaha YFZ450 Base
2015 Yamaha YFZ450R Base
2015 Yamaha YFZ450R SE Base
2016 Yamaha YFZ450 Base
2016 Yamaha YFZ450R Base
2016 Yamaha YFZ450R SE Base
2017 Yamaha YFZ450 Base
2017 Yamaha YFZ450R Base
2017 Yamaha YFZ450R SE Base
2018 Yamaha YFZ450R Base
2018 Yamaha YFZ450R SE Base
2019 Yamaha YFZ450R Base
2020 Yamaha YFZ450R Base
2020 Yamaha YFZ450R SE Base
2021 Yamaha YFZ450R Base
2021 Yamaha YFZ450R SE Base
2022 Yamaha YFZ450R Base
2022 Yamaha YFZ450R SE Base
2023 Yamaha YFZ450R Base
2023 Yamaha YFZ450R SE Base
2024 Yamaha YFZ450R Base
2024 Yamaha YFZ450R SE Base
2025 Yamaha YFZ450R Base
2026 Yamaha YFZ450R Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: powersports
Epa: N/A
Regular Stock: t
Units Per Sku: 1