- Dust cover that is applied over a pre-oiled air filter
- For very dusty conditions
Yamaha -- YZ 125 -- (2020, 2021, 2022, 2024, 2023, 2008, 1998, 1997, 1989, 2004, 1994, 1996, 1995, 2007, 2003, 2012, 2000, 2010, 1992, 2011, 2018, 2001, 2006, 1990, 2002, 2015, 2016, 2009, 1991, 1993, 2014, 2019, 1999, 2005, 2013, 2017); Yamaha -- YZ 250 -- (2020, 2021, 2022, 2023, 1999, 2010, 2000, 1992, 1997, 2017, 2013, 2019, 2007, 2001, 2009, 1995, 2004, 2015, 2018, 2006, 2003, 1990, 2016, 2002, 2011, 2005, 1993, 1994, 2014, 1991, 1989, 2012, 2008, 1998, 1996); Yamaha -- YZ 125 X -- (2021, 2020, 2022, 2023, 2024); Yamaha -- YZ 250 X -- (2017, 2019, 2018, 2020, 2016, 2021, 2022, 2023); Yamaha -- YZ 426 F -- (2000, 2002, 2001); Yamaha -- YZ 450 F -- (2008, 2005, 2006, 2003, 2004, 2007, 2009); Yamaha -- YZ 250 F -- (2005, 2008, 2007, 2003, 2012, 2001, 2004, 2011, 2002, 2010, 2006, 2009, 2013); Yamaha -- WR 250 -- (1990, 1999, 1994, 1992, 1989, 2000, 1995, 1996, 1993, 1998, 2002, 1991, 2001, 1997); Yamaha -- WR 500 Z -- (1993, 1992); Yamaha -- WR 400 F -- (2000, 1999, 1998); Yamaha -- YZ 400 F -- (1999, 2000, 1998)