Having cooling system problems? It may be your radiator cap. Replace it with this stock replacement 13 psi cap. Replaces Polaris part #1240044 and 1240508. Fits the following models and more: Fits all Polaris models listed: 2011-15 Polaris Hawkeye (All) 2000-02 Polaris Magnum 500 2008-11 Polaris RZR 800 2011 Polaris RZR 900 2001-04 Polaris Sportsman 400 2008-14 Polaris Sportsman 400 HO 2006-07 Polaris Sportsman 450 2016-20 Polaris Sportsman 450 HO 2000-13 Polaris Sportsman 500 2014-20 Polaris Sportsman 570 2017-23 Polaris Sportsman 570 6x6 2003-05 Polaris Sportsman 600 2002-07 Polaris Sportsman 700 2005-14 Polaris Sportsman 800 2015 Polaris Sportsman ETX 2001 Polaris Worker 500 2000-02 Polaris Xpedition 425 2024 Polaris RZR 1000 2020-24 Polaris RZR Pro-XP 2023-24 Polaris RZR Pro-R 2014-15 Polaris ACE 325 2004-05 Polaris ATP 500 2000-01 Polaris Diesel