The All Balls Countershaft Seal Kit, manufacturer part number 25-4020 and vendor part number 22-54020, provides the replacement sealing components needed to service the countershaft area on compatible Yamaha motorcycles. This kit is designed for a reliable fit and helps restore proper sealing where the countershaft exits the engine.
Each kit includes a replacement outer seal along with the required O-rings, snap rings, and lock washers when applicable. Supplying the related retaining and sealing components together helps simplify installation and supports a complete repair without relying on worn original hardware.
Fitment includes the 2001–2010 Yamaha YZ250F. Verify the motorcycle year and model before installation to confirm compatibility. The All Balls 25-4020 Countershaft Seal Kit is a practical service replacement for maintenance, rebuild, and leak-repair applications.
Features:
- Complete service kit: Includes the replacement outer seal along with required O-rings, snap rings, or lock washers
- Application: Designed for the countershaft area on compatible Yamaha YZ250F motorcycles
- Fitment: Fits 2001–2010 Yamaha YZ250F models
- Brand: All Balls
- Manufacturer part number: 25-4020
- Vendor part number: 22-54020
Fitment:
2001 Yamaha WR250F
2001 Yamaha YZ250F
2002 Yamaha WR250F
2002 Yamaha YZ250F
2003 Yamaha WR250F
2003 Yamaha YZ250F
2004 Yamaha WR250F
2004 Yamaha YZ250F
2005 Yamaha WR250F
2005 Yamaha YZ250F
2006 Yamaha WR250F
2006 Yamaha YZ250F
2007 Yamaha WR250F
2007 Yamaha YZ250F
2008 Yamaha WR250F
2008 Yamaha YZ250F
2009 Yamaha WR250F
2009 Yamaha YZ250F
2010 Yamaha WR250F
2010 Yamaha YZ250F
2011 Yamaha WR250F
2011 Yamaha YZ250F
2012 Yamaha WR250F
2012 Yamaha YZ250F
2013 Yamaha WR250F
2013 Yamaha YZ250F
2014 Yamaha WR250F