FILTERWEARS Pre-Filter K365 For K&N Air Filter YA-4001: Fits 1999-2012 Yamaha YFM250 / YFM400

Direct from manufacturer. Made in the USA.

Filter material: 100% monofilament polyester with water repellent finish standard on all pre-filters. Closed top, round straight pre-filter.

Measurements: 3.94"(diameter), 5.88"(height)

Fits K&N Air Filter: YA-4001

Cross Reference: K&N PreCharger YA-4001PK

Cross Reference: Yamaha 4XE-E4450-00-00, BMC FM34221

Vehicle Applications:

• Fits 2007–2012 Yamaha YFM400 Big Bear IRS 4x4 (w/ K&N YA-4001 air filter)
• Fits 2000–2006 Yamaha YFM400 Big Bear 4x4 (w/ K&N YA-4001 air filter)
• Fits 2000–2004 Yamaha YFM400 Big Bear 2x4 (w/ K&N YA-4001 air filter)
• Fits 2007–2009 Yamaha YFM250 Big Bear (w/ K&N YA-4001 air filter)
• Fits 2005–2006 Yamaha YFM250 Bruin (w/ K&N YA-4001 air filter)
• Fits 1999–2004 Yamaha YFM250 Bear Tracker (w/ K&N YA-4001 air filter)
• Also suitable for universal and custom applications using air filters with the same dimensions.