NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2005 | Aprilia | RS 50 | Base |
| 2004-2005 | Aprilia | Tuono 50 | Base |
| 1986-1988 | Arctic Cat | Cheetah 500 F/C | Base |
| 1988-1991 | Arctic Cat | Cheetah Touring | Base |
| 1985-1990 | Arctic Cat | Cougar | Base |
| 1989-1990 | Arctic Cat | Cougar Mountain Cat | Base |
| 1985 | Arctic Cat | Cougar SE | Base |
| 1974 | Arctic Cat | El Tigre 295 | Base |
| 1977,1987-1988 | Arctic Cat | El Tigre 5000 | Base |
| 1981 | Arctic Cat | El Tigre 5000 F/C | Base |
| 1986 | Arctic Cat | Jag | Base |
| 1981 | Arctic Cat | Jag 4000 | Base |
| 1987-1988 | Arctic Cat | Jag 440 | Base |
| 1989-1990 | Arctic Cat | Jag AFS | Base |
| 1992-1993 | Arctic Cat | Lynx Mountain Cat | Base |
| 1979-1981,1985-1991 | Arctic Cat | Pantera | Base |
| 1978 | Arctic Cat | Pantera 5000 F/A | Base |
| 1978 | Arctic Cat | Pantera 5000 F/C | Base |
| 1980-1981 | Arctic Cat | Pantera ES (Electric Start) | Base |
| 1979-1981,1984-1990 | Arctic Cat | Panther | Base |
| 1977-1978 | Arctic Cat | Panther 4000 | Base |
| 1973 | Arctic Cat | Panther 440 | Base |
| 1990 | Arctic Cat | Panther Mountain Cat | Base |
| 1981 | Arctic Cat | Panther West | Base |
| 1997 | Arctic Cat | Powder Extreme | Base |
| 1994-1997 | Arctic Cat | Puma | Base |
| 1994-1997 | Arctic Cat | Puma 2-Up | Base |
| 1973 | Arctic Cat | Puma 440 | Base |
| 1994-1997 | Arctic Cat | Puma Deluxe | Base |
| 1987-1990 | Arctic Cat | Super Jag | Base |
| 1980-1981 | Arctic Cat | Trail Cat 400 | Base |
| 1990 | Arctic Cat | Wildcat 650 | Base |
| 1990 | Arctic Cat | Wildcat Mountain Cat | Base |
| 1977 | Arctic Cat | Z 250 | Base |
| 1977-1979 | Bultaco | Pursang 250 | Base |
| 1977 | Can-Am | 175 MX-3 | Base |
| 1980 | Can-Am | 400 MX-6 | Base |
| 2012-2018 | Cobra | CX65 | Base |
| 1998-1999 | Cobra | KING | Base |
| 2010 | Gas Gas | EC 125 | Base |
| 2001 | Gas Gas | EC Rookie 50 | Base |
| 2004 | Gas Gas | SM 50 | Base |
| 1976-1977 | Harley-Davidson | SS125 | Base |
| 1976-1977 | Harley-Davidson | SS175 | Base |
| 1975-1977 | Harley-Davidson | SS250 | Base |
| 1974-1975 | Harley-Davidson | SX175 | Base |
| 1976-1977 | Harley-Davidson | SXT125 | Base |
| 1984-1986 | Honda | ATC250R | Base |
| 1999-2007 | Honda | CR125R | Base |
| 1973-1976 | Honda | CR250M | Base |
| 1978-1981,1987-1988 | Honda | CR250R | Base |
| 1983-1984 | Honda | CR60R | Base |
| 1980-1985 | Honda | CR80R | Base |
| 1982-1984 | Honda | FL250 Odyssey | Base |
| 2004 | Honda | NSR50 | Base |
| 1987-1988 | Honda | TRX250R | Base |
| 1998-2006,2009-2010,2012 | Husqvarna | CR125 | Base |
| 2010 | Husqvarna | SM 125 | Base |
| 1991 | Husqvarna | WME 250 | Base |
| 1998-2006,2009-2012 | Husqvarna | WR125 | Base |
| 2010 | Husqvarna | WRE 125 | Base |
| 1992-1993,1996-1997 | Husqvarna | WXC 250 | Base |
| 1990-1991,1994-1997 | Husqvarna | WXE 250 | Base |
| 1991 | Husqvarna | WXE 260 | Base |
| 1982-1986 | Husqvarna | XC125 | Base |
| 1981-1982 | John Deere | Liquifire 440 | Base |
| 1981-1982 | John Deere | Sportfire | Base |
| 1981-1982 | John Deere | Trailfire 440 | Base |
| 1980-1982 | Kawasaki | KDX175 | Base |
| 1983-1996 | Kawasaki | KDX200 | Base |
| 1984,1991-1994 | Kawasaki | KDX250 | Base |
| 1984 | Kawasaki | KDX80 | Base |
| 1982 | Kawasaki | KE125 | Base |
| 1974-1976,1978-1982,1994-2002 | Kawasaki | KX125 | Base |
| 1974-1976,1978-1982,1986-1987,1989-1991 | Kawasaki | KX250 | Base |
| 1975-1976 | Kawasaki | KX400 | Base |
| 1980-1981 | Kawasaki | KX420 | Base |
| 1983-1984 | Kawasaki | KX500 | Base |
| 1983-2001 | Kawasaki | KX60 | Base |
| 1980-1991 | Kawasaki | KX80 | Base |
| 1987-1991 | Kawasaki | KX80 Big Wheel | Base |
| 1983-1985 | Kawasaki | ZX750 GPZ | Base |
| 1984-1985 | Kawasaki | ZX750E Turbo | Base |
| 2007 | KTM | 105 SX | Base |
| 1993 | KTM | 125 EXC | Base |
| 1997-1998 | KTM | 125 Sting | Base |
| 2003-2004 | KTM | 200 SX | Base |
| 1990-1995 | KTM | 250 EXC | Base |
| 1984-1988 | KTM | 250 MXC | Base |
| 1992-1995 | KTM | 250 SX | Base |
| 1990-1992 | KTM | 300 DXC | Base |
| 1990-1995 | KTM | 300 EXC | Base |
| 1990,1993-1994 | KTM | 300 MXC | Base |
| 1992 | KTM | 300 SX | Base |
| 1989-1990 | KTM | 350 EXC | Base |
| 1985-1988 | KTM | 350 MXC | Base |
| 1985-1986 | KTM | 500 MXC | Base |
| 1992 | KTM | 500 SX | Base |
| 1993-1994 | KTM | 550 MXC | Base |
| 2007 | KTM | 85 SX (17/14) | Base |
| 2007 | KTM | 85 SX (19/16) | Base |
| 2008 | KTM | 85 XC | Base |
| 1999-2006 | LEM | LX4 | Base |
| 2007 | Piaggio | Typhoon | Base |
| 2006-2010 | Polini | X1R | Base |
| 2006-2010 | Polini | X3P Air | Base |
| 2006-2010 | Polini | X3R | Base |
| 2006-2010 | Polini | X5P Air | Base |
| 2007-2010 | Polini | X5P Liquid | Base |
| 2010 | Polini | XP65R | Base |
| 1971 | Sno-Jet | S/S Jet 292 | Base |
| 1971 | Sno-Jet | S/S Jet 338 | Base |
| 1971 | Sno-Jet | S/S Jet 433 | Base |
| 1972 | Sno-Jet | SST 292 | Base |
| 1972 | Sno-Jet | SST 338 | Base |
| 1973-1974 | Sno-Jet | SST 340 | Base |
| 1972 | Sno-Jet | SST 433 | Base |
| 1973-1976 | Sno-Jet | SST 440 | Base |
| 1975-1976 | Sno-Jet | SST F/A 340 | Base |
| 1975-1976 | Sno-Jet | SST F/A 440 | Base |
| 1972 | Sno-Jet | Star-Jet +2 338 | Base |
| 1970-1972 | Sno-Jet | Star-Jet 292 Hirth | Base |
| 1971,1973 | Sno-Jet | Star-Jet 338 | Base |
| 1973 | Sno-Jet | Star-Jet 433 | Base |
| 1970 | Sno-Jet | Super-Jet 338 | Base |
| 1972 | Sno-Jet | Super-Jet 433 | Base |
| 1976-1977 | Suzuki | GT250 | Base |
| 1985-1992 | Suzuki | LT250R QuadRacer | Base |
| 1978 | Suzuki | PE175 | Base |
| 1980 | Suzuki | PE250 | Base |
| 1980-1981 | Suzuki | PE400 | Base |
| 1976-1981 | Suzuki | RM100 | Base |
| 1975-1980,1982-1995 | Suzuki | RM125 | Base |
| 1976-1981 | Suzuki | RM250 | Base |
| 1976-1977 | Suzuki | RM370 | Base |
| 1982 | Suzuki | RM465 | Base |
| 2003 | Suzuki | RM60 | Base |
| 1982,1984-1985 | Suzuki | RM80 | Base |
| 1993-1998 | Suzuki | RMX250 | Base |
| 1981 | Suzuki | RS250 | Base |
| 1995-2003 | TM | 125E | Base |
| 1995-2003 | TM | 250E | Base |
| 1996-2003 | TM | 300E | Base |
| 1995-2000 | TM | 80E | Base |
| 2009 | TM | EN125 | Base |
| 2009 | TM | EN144 | Base |
| 1995-2003,2009-2012 | TM | MX125 | Base |
| 2009,2011 | TM | MX144 | Base |
| 1995-2003,2011-2012 | TM | MX250 | Base |
| 1998-2003,2011-2012 | TM | MX300 | Base |
| 1995-2000 | TM | MX80 | Base |
| 2009 | TM | MX85 (17/14) | Base |
| 2009 | TM | MX85 (19/16) | Base |
| 2009 | TM | SMM125 | Base |
| 2009 | TM | SMR125 | Base |
| 2001 | Vespa | ET2 | Base |
| 1969-1971 | Yamaha | AT1 | Base |
| 1970-1971 | Yamaha | AT1M | Base |
| 1972 | Yamaha | AT2M | Base |
| 1980-1981 | Yamaha | DT175 | Base |
| 1974 | Yamaha | DT360 | Base |
| 1975-1976 | Yamaha | DT400 | Base |
| 1972-1973 | Yamaha | EW643 | Base |
| 1976-1978 | Yamaha | EX340 | Base |
| 1976-1981 | Yamaha | EX440 | Base |
| 1973-1974 | Yamaha | GP292 | Base |
| 1974-1975 | Yamaha | GPX338 | Base |
| 1974-1975 | Yamaha | GPX433 | Base |
| 1980-1981 | Yamaha | IT125 | Base |
| 1979-1983 | Yamaha | IT175 | Base |
| 1984-1985 | Yamaha | IT200 | Base |
| 1977-1983 | Yamaha | IT250 | Base |
| 1974-1976 | Yamaha | MX125 | Base |
| 1975 | Yamaha | MX400 | Base |
| 1970-1971 | Yamaha | RT1 | Base |
| 1972-1973 | Yamaha | RT2 | Base |
| 1973 | Yamaha | RT3 | Base |
| 1973,1978 | Yamaha | SR433 | Base |
| 1973,1975 | Yamaha | SR643 | Base |
| 1976-1980 | Yamaha | SRX440 | Base |
| 1969 | Yamaha | SS338 | Base |
| 1971 | Yamaha | SS433 | Base |
| 1976 | Yamaha | TY175 | Base |
| 1992 | Yamaha | WR200 | Base |
| 1982 | Yamaha | YZ100 | Base |
| 1974-1976,1982-2017 | Yamaha | YZ125 | Base |
| 1974-1982,1984-1987 | Yamaha | YZ250 | Base |
| 1980 | Yamaha | YZ50 | Base |
| 1981-1983 | Yamaha | YZ60 | Base |
| 1982-1983 | Yamaha | YZ80 | Base |