# NGK Iridium Premium Spark Plug Box of 4 (BR9EIX) 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. - RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs - Trivalent metal plating for superior anti-corrosion and anti-seizing properties - Outstanding acceleration, high fuel efficiency and durability - Fine iridium tip ensures durable and consistent spark This Part Fits: Year Make Model Submodel 2002-2005 Aprilia RS 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 ## Details - **Price:** 74.61 CAD - **Vendor:** NGK - **Type:** Spark Plugs ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 74.61 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - out of package - Photo - out of package --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/ngk-iridium-premium-spark-plug-box-of-4-br9eix) > Updated: 2026-06-27