Front Wheel Seal 21" 

Ref. H-D : 43939-89

As per pictures

Brand : Harley-Davidson

Type : New

Mounts on :

The part is compatible with the following motorcycles:

Dyna
Wide Glide : FXDWG (2007, 2010-2011), FXDWGI (2006), FXDWG 105th Anniversary : FXDWG ANV (2008).

Softail
Blackline : FXS (2011-2013), FXS 103 (2012-2013).
Night Train : FXSTB (2006-2009), FXSTBI (2006).
Softail Custom : FXSTC (2007-2010).
Softail Deuce : FXSTD (2006-2007), FXSTDI (2006).
Softail Standard : FXST (2006-2015), FXSTI (2006).
Springer Softail : FXSTS (2006), FXSTSI (2006).

Sportster
1200 Custom : XL1200C (2004, 2006-2010).
Seventy-Two : XL1200V (2012-2016).
883 Custom : XL883C (2004, 2006-2010).