Designed to operate over a much wider heat range than ordinary plugsResists carbon buildup and pre-ignitionHigh alumina ceramics for better heat transfer and electrical insulationSolid copper core and nickel tipped electrode provide a longer plus lifePatented triple gasket sealing process eliminates the possibility of combustion gas leakageSolid copper core for greater sparkLonger insulator nose prevents fouling FITS:POLARISATP 300 HO (04-05)MAGNUM 325 2x4 / HDS (00-02)MAGNUM 325 4x4 / HDS (00-02)TRAIL BOSS 325 (00-02)XPEDITION 325 4x4 (00-02)ATP 330 4x4 (04-05)MAGNUM 330 2x4 (03-06)MAGNUM 330 4x4 (03-06)TRAIL BLAZER 330 (08-13)TRAIL BOSS 330 (03-13)TRAIL BOSS 330 4x4 (2003)XPEDITION 330 (03-09)SPORTSMAN 400 HO (08-14)HAWKEYE 400 (11-13)RANGER 400 (10-13)MAGNUM 2x4/4x4/6x6 (95-97)SPORTSMAN 450 (06-07, 16)ATP 500 (04-05)SPORTSMAN 500 (96-04)SPORTSMAN 500 EFI (06-13)SPORTSMAN 500 HO (01-13)SCRAMBLER 500 4x4 (00-11)XPLORER 500 (1997)SPORTSMAN 550 XP (09-14)