The Outerwears ATV Pre-Filter is designed for use with the K&N YA-4350 air filter and helps provide an additional layer of protection against dirt, dust, sand, and other trail debris. Its blue outer layer is engineered to help reduce the amount of contaminants reaching the primary air filter while supporting consistent airflow for off-road riding conditions.
Designed as a protective cover for compatible ATV air filters, this Outerwears pre-filter helps extend service intervals by capturing larger particles before they reach the filter element. It is a practical replacement or upgrade for riders who operate in dusty, muddy, or sandy environments and want added protection for the engine intake system. The cover is made for a precise fit over the K&N YA-4350 filter and is intended for straightforward installation and removal during routine maintenance.
Fitment includes select Yamaha Grizzly and Wolverine models. It fits 2002–2008 Yamaha YFM660FG Grizzly 4WD with IRS and 1995–1997 Yamaha YFM350FX Wolverine 4WD with SRA. Verify the existing air filter application before installation to ensure compatibility. This product is manufactured by Outerwears and is identified by manufacturer part number 20-1009-02 and vendor part number 25-5878B.
Features:
- Brand: Outerwears
- Product Type: ATV air filter pre-filter
- Color: Blue
- Compatibility: Designed for K&N YA-4350 air filters
- Protection: Helps shield the primary air filter from dirt, dust, sand, and trail debris
- Fitment: 2002–2008 Yamaha YFM660FG Grizzly 4WD with IRS
- Fitment: 1995–1997 Yamaha YFM350FX Wolverine 4WD with SRA
- Manufacturer Part Number: 20-1009-02
- Vendor Part Number: 25-5878B
Fitment:
1987 Yamaha YFM350X Warrior
1988 Yamaha YFM350X Warrior
1989 Yamaha YFM350X Warrior
1990 Yamaha YFM350X Warrior
1991 Yamaha YFM350X Warrior
1992 Yamaha YFM350X Warrior
1993 Yamaha YFM350X Warrior
1994 Yamaha YFM350X Warrior
1995 Yamaha YFM350FX Wolverine 4WD [SRA]
1995 Yamaha YFM350X Warrior
1996 Yamaha YFM350FX Wolverine 4WD [SRA]
1996 Yamaha YFM350X Warrior
1997 Yamaha YFM350FX Wolverine 4WD [SRA]
1997 Yamaha YFM350X Warrior
1998 Yamaha YFM350FX Wolverine 4WD [SRA]
1998 Yamaha YFM350X Warrior
1998 Yamaha YFM600FG Grizzly 4WD [SRA]
1999 Yamaha YFM350FX Wolverine 4WD [SRA]
1999 Yamaha YFM350X Warrior
1999 Yamaha YFM600FG Grizzly 4WD [SRA]
2000 Yamaha YFM350FX Wolverine 4WD [SRA]
2000 Yamaha YFM350X Warrior
2000 Yamaha YFM600FG Grizzly 4WD [SRA]
2001 Yamaha YFM350FX Wolverine 4WD [SRA]
2001 Yamaha YFM350X Warrior
2001 Yamaha YFM600FG Grizzly 4WD [SRA]
2002 Yamaha YFM350FX Wolverine 4WD [SRA]
2002 Yamaha YFM350X Warrior
2002 Yamaha YFM660FG Grizzly 4WD [IRS]
2003 Yamaha YFM350FX Wolverine 4WD [SRA]
2003 Yamaha YFM350X Warrior
2003 Yamaha YFM660FG Grizzly 4WD [IRS]
2004 Yamaha YFM350FX Wolverine 4WD [SRA]
2004 Yamaha YFM350R Raptor
2004 Yamaha YFM350X Warrior
2004 Yamaha YFM660FG Grizzly 4WD [IRS]
2005 Yamaha YFM350FX Wolverine 4WD [SRA]
2005 Yamaha YFM350R Raptor
2005 Yamaha YFM660FG Grizzly 4WD [IRS]
2006 Yamaha YFM350R Raptor
2006 Yamaha YFM660FG Grizzly 4WD [IRS]
2007 Yamaha YFM350R Raptor
2007 Yamaha YFM660FG Grizzly 4WD [IRS]
2008 Yamaha YFM660FG Grizzly 4WD [IRS]