Straight from the Kawasaki website. They have a great lookup tool and able to see what year/model bikes use the same parts. Additional years may work but for some reason or another they are a different part number.
To do this yourself go to
www.kawasaki.com and place your arrow over "owner info" then click "parts diagrams". Search for your motorcycle then click "parts diagrams" again. Allow the pop-up. Now go and find the part that you want to know about and click the part number of it. Another window will appear now just click the question mark above the part and the following list will appear. This look-up tool can be used for many things and comes in real handy.
43080-0037
KLX450A8F (KLX450R) (2008)
KLX450A9F (KLX450R) (2009)
KLX450ACF (KLX450R (Australian)) (2012)
KLX450ADF (KLX450R (Australian)) (2013)
KX250T6F (KX250F) (2006)
KX250T7F (KX250F) (2007)
KX250T8F (KX250F) (2008)
KX250W9F (KX250F) (2009)
KX250W9FA (KX250F Monster Energy) (2009)
KX250XAFB (KX250F) (2010)
KX250YBF (KX250F) (2011)
KX250YCF (KX250F) (2012)
KX250ZDF (KX250F) (2013)
KX450D6F (KX450F (European)) (2006)
KX450D6F (KX450F) (2006)
KX450D7F (KX450F) (2007)
KX450D8F (KX450F) (2008)
KX450E9F (KX450F) (2009)
KX450E9FA (KX450F Monster Energy) (2009)
KX450EAF (KX450F) (2010)
KX450EBF (KX450F) (2011)
KX450FCF (KX450F) (2012)
KX450FDF (KX450F) (2013)