Having cooling system problems? It may be your radiator cap. Replace it with this stock replacement 13 psi cap. Same as Polaris part #1240044 and 1240508. Fits the following Polaris models: ACE 2014–2015 Sportsman ACE 325 HAWKEYE 2011–2013 Hawkeye 400 HO MAGNUM 1995–1998 Magnum 425 2003 Magnum 500 RZR 2008–2011 RZR 800 2010–2011 RZR 4 800 2009–2011 RZR S 800 2011 RZR XP 900 SPORTSMAN 2004–2014 Sportsman 400 2006–2007 Sportsman 450 2014–2024 Sportsman 570 2015–2021 Sportsman X2 570 2000–2013 Sportsman 500 2006–2009 Sportsman X2 500 2003–2005 Sportsman 600 2002–2007 Sportsman 700 2005–2014 Sportsman 800 2015 Sportsman ETX TOURING / WORKER / XPEDITION 2015–2021 Sportsman Touring 570 1999, 2001 Worker 500 2000 Xpedition 325 2000–2002 Xpedition 425 Note: This cap does not fit Polaris Ranger models. Please confirm PSI rating and fitment before purchase.