This axle is compatible with the following 4 X 4 Models with a male inboard spline:
2004 4X4 Polaris 330 ATP
2005 4X4 Polaris 330 ATP
2004 4X4 Polaris 500 ATP
2003 4X4 Polaris 330 Magnum
2004 4X4 Polaris 330 Magnum
2004 4X4 Polaris 400 Sportsman
2004 4X4 Polaris 500 Sportsman
2004 4X4 Polaris 500 Sportsman HO
2005 4X4 Polaris 500 ATP
2003 4X4 Polaris 600 Sportsman
2004 4X4 Polaris 600 Sportsman
2002 4X4 Polaris 700 Sportsman manufactured after 05/01/02
2003 4X4 Polaris 700 Sportsman
2004 4X4 Polaris 700 Sportsman