shop now!

Shop By Vehicle:

NGK 3981

NGK Iridium IX Spark Plug
Brand: NGK
Stock # 3981
Oxygen Sensor - 1 Year Warranty
Weight: 0.13 Lb. ( 0.06 Kg.)
Dimensions: 3.3 x 0.9 x 0.8 '' ( 8.4 x 2.4 x 2.1 cm)
UPC: 00087295139813
Condition: New
In Stock
$17.39
$9.59
2017 Yamaha YZ125 2016 Yamaha YZ125 2015 Yamaha YZ125 2014 Yamaha YZ125 2013 Cobra CX65 2013 Yamaha YZ125 2012 Cobra CX65 2012 Husqvarna CR125 2012 Husqvarna WR125 2012 TM MX125 2012 TM MX250 2012 TM MX300 2012 Yamaha YZ125 2011 Husqvarna WR125 2011 TM MX125 2011 TM MX144 2011 TM MX250 2011 TM MX300 2011 Yamaha YZ125 2010 Husqvarna CR125 2010 Husqvarna SM 125 2010 Husqvarna WR125 2010 Husqvarna WRE 125 2010 Polini X1R 2010 Polini X3P Air 2010 Polini X3R 2010 Polini X5P Air 2010 Polini X5P Liquid 2010 Polini XP65R 2010 TM MX125 2010 Yamaha YZ125 2009 Husqvarna CR125 2009 Husqvarna WR125 2009 Polini X1R 2009 Polini X3P Air 2009 Polini X3R 2009 Polini X5P Air 2009 Polini X5P Liquid 2009 TM EN125 2009 TM EN144 2009 TM MX125 2009 TM MX144 2009 TM MX85 (17/14) 2009 TM MX85 (19/16) 2009 TM SMM125 2009 TM SMR125 2009 Yamaha YZ125 2008 KTM 85 XC 2008 Polini X1R 2008 Polini X3P Air 2008 Polini X3R 2008 Polini X5P Air 2008 Polini X5P Liquid 2008 Yamaha YZ125 2007 Honda CR125R 2007 KTM 105 SX 2007 KTM 85 SX (17/14) 2007 KTM 85 SX (19/16) 2007 Piaggio Typhoon 2007 Polini X1R 2007 Polini X3P Air 2007 Polini X3R 2007 Polini X5P Air 2007 Polini X5P Liquid 2007 Yamaha YZ125 2006 Honda CR125R 2006 Husqvarna CR125 2006 Husqvarna WR125 2006 LEM LX4 2006 Polini X1R 2006 Polini X3P Air 2006 Polini X3R 2006 Polini X5P Air 2006 Yamaha YZ125 2005 Aprilia RS 50 2005 Aprilia Tuono 50 2005 Honda CR125R 2005 Husqvarna CR125 2005 Husqvarna WR125 2005 LEM LX4 2005 Yamaha YZ125 2004 Aprilia RS 50 2004 Aprilia Tuono 50 2004 Gas Gas SM 50 2004 Honda CR125R 2004 Honda NSR50 2004 Husqvarna CR125 2004 Husqvarna WR125 2004 KTM 200 SX 2004 LEM LX4 2004 Yamaha YZ125 2003 Aprilia RS 50 2003 Honda CR125R 2003 Husqvarna CR125 2003 Husqvarna WR125 2003 KTM 200 SX 2003 LEM LX4 2003 Suzuki RM60 2003 TM 125E 2003 TM 250E 2003 TM 300E 2003 TM MX125 2003 TM MX250 2003 TM MX300 2003 Yamaha YZ125 2002 Aprilia RS 50 2002 Honda CR125R 2002 Husqvarna CR125 2002 Husqvarna WR125 2002 Kawasaki KX125 2002 LEM LX4 2002 TM 125E 2002 TM 250E 2002 TM 300E 2002 TM MX125 2002 TM MX250 2002 TM MX300 2002 Yamaha YZ125 2001 Gas Gas EC Rookie 50 2001 Honda CR125R 2001 Husqvarna CR125 2001 Husqvarna WR125 2001 Kawasaki KX125 2001 Kawasaki KX60 2001 LEM LX4 2001 TM 125E 2001 TM 250E 2001 TM 300E 2001 TM MX125 2001 TM MX250 2001 TM MX300 2001 Vespa ET2 2001 Yamaha YZ125 2000 Honda CR125R 2000 Husqvarna CR125 2000 Husqvarna WR125 2000 Kawasaki KX125 2000 Kawasaki KX60 2000 LEM LX4 2000 TM 125E 2000 TM 250E 2000 TM 300E 2000 TM 80E 2000 TM MX125 2000 TM MX250 2000 TM MX300 2000 TM MX80 2000 Yamaha YZ125 1999 Cobra KING 1999 Honda CR125R 1999 Husqvarna CR125 1999 Husqvarna WR125 1999 Kawasaki KX125 1999 Kawasaki KX60 1999 LEM LX4 1999 TM 125E 1999 TM 250E 1999 TM 300E 1999 TM 80E 1999 TM MX125 1999 TM MX250 1999 TM MX300 1999 TM MX80 1999 Yamaha YZ125 1998 Arctic Cat Thundercat MC 1998 Cobra KING 1998 Husqvarna CR125 1998 Husqvarna WR125 1998 Kawasaki KX125 1998 Kawasaki KX60 1998 KTM 125 Sting 1998 Suzuki RMX250 1998 TM 125E 1998 TM 250E 1998 TM 300E 1998 TM 80E 1998 TM MX125 1998 TM MX250 1998 TM MX300 1998 TM MX80 1998 Yamaha YZ125 1997 Arctic Cat Powder Extreme 1997 Arctic Cat Puma 1997 Arctic Cat Puma 2-Up 1997 Arctic Cat Puma Deluxe 1997 Husqvarna WXC 250 1997 Husqvarna WXE 250 1997 Kawasaki KX125 1997 Kawasaki KX60 1997 KTM 125 Sting 1997 Suzuki RMX250 1997 TM 125E 1997 TM 250E 1997 TM 300E 1997 TM 80E 1997 TM MX125 1997 TM MX250 1997 TM MX80 1997 Yamaha YZ125 1996 Arctic Cat Jag Deluxe 1996 Arctic Cat Puma 1996 Arctic Cat Puma 2-Up 1996 Arctic Cat Puma Deluxe 1996 Husqvarna WXC 250 1996 Husqvarna WXE 250 1996 Kawasaki KDX200 1996 Kawasaki KX125 1996 Kawasaki KX60 1996 Suzuki RMX250 1996 TM 125E 1996 TM 250E 1996 TM 300E 1996 TM 80E 1996 TM MX125 1996 TM MX250 1996 TM MX80 1996 Yamaha YZ125 1995 Arctic Cat Puma 1995 Arctic Cat Puma 2-Up 1995 Arctic Cat Puma Deluxe 1995 Husqvarna WXE 250 1995 Kawasaki KDX200 1995 Kawasaki KX125 1995 Kawasaki KX60 1995 KTM 250 EXC 1995 KTM 250 SX 1995 KTM 300 EXC 1995 Suzuki RM125 1995 Suzuki RMX250 1995 TM 125E 1995 TM 250E 1995 TM 80E 1995 TM MX125 1995 TM MX250 1995 TM MX80 1995 Yamaha YZ125 1994 Arctic Cat Puma 1994 Arctic Cat Puma 2-Up 1994 Arctic Cat Puma Deluxe 1994 Husqvarna WXE 250 1994 Kawasaki KDX200 1994 Kawasaki KDX250 1994 Kawasaki KX125 1994 Kawasaki KX60 1994 KTM 250 EXC 1994 KTM 250 SX 1994 KTM 300 EXC 1994 KTM 300 MXC 1994 KTM 550 MXC 1994 Suzuki RM125 1994 Suzuki RMX250 1994 Yamaha YZ125 1993 Arctic Cat Lynx Mountain Cat 1993 Husqvarna WXC 250 1993 Kawasaki KDX200 1993 Kawasaki KDX250 1993 Kawasaki KX60 1993 KTM 125 EXC 1993 KTM 250 EXC 1993 KTM 250 SX 1993 KTM 300 EXC 1993 KTM 300 MXC 1993 KTM 550 MXC 1993 Suzuki RM125 1993 Suzuki RMX250 1993 Yamaha YZ125 1992 Arctic Cat Lynx Mountain Cat 1992 Arctic Cat Pantera 1992 Husqvarna WXC 250 1992 Kawasaki KDX200 1992 Kawasaki KDX250 1992 Kawasaki KX60 1992 KTM 250 EXC 1992 KTM 250 SX 1992 KTM 300 DXC 1992 KTM 300 EXC 1992 KTM 300 SX 1992 KTM 500 SX 1992 Suzuki LT250R QuadRacer 1992 Suzuki RM125 1992 Yamaha WR200 1992 Yamaha YZ125 1991 Arctic Cat Cheetah Touring 1991 Arctic Cat Pantera 1991 Husqvarna WME 250 1991 Husqvarna WXE 250 1991 Husqvarna WXE 260 1991 Kawasaki KDX200 1991 Kawasaki KDX250 1991 Kawasaki KX250 1991 Kawasaki KX60 1991 Kawasaki KX80 1991 Kawasaki KX80 Big Wheel 1991 KTM 250 EXC 1991 KTM 300 DXC 1991 KTM 300 EXC 1991 Suzuki LT250R QuadRacer 1991 Suzuki RM125 1991 Yamaha YZ125 1990 Arctic Cat Cheetah Touring 1990 Arctic Cat Cougar 1990 Arctic Cat Cougar Mountain Cat 1990 Arctic Cat Jag AFS 1990 Arctic Cat Jag AFS Deluxe 1990 Arctic Cat Jag AFS Long Track 1990 Arctic Cat Pantera 1990 Arctic Cat Panther 1990 Arctic Cat Panther Mountain Cat 1990 Arctic Cat Super Jag 1990 Arctic Cat Wildcat 650 1990 Arctic Cat Wildcat Mountain Cat 1990 Husqvarna WXE 250 1990 Kawasaki KDX200 1990 Kawasaki KX250 1990 Kawasaki KX60 1990 Kawasaki KX80 1990 Kawasaki KX80 Big Wheel 1990 KTM 250 EXC 1990 KTM 300 DXC 1990 KTM 300 EXC 1990 KTM 300 MXC 1990 KTM 350 EXC 1990 Suzuki LT250R QuadRacer 1990 Suzuki RM125 1990 Yamaha YZ125 1989 Arctic Cat Cheetah Touring 1989 Arctic Cat Cougar 1989 Arctic Cat Cougar Mountain Cat 1989 Arctic Cat Jag AFS 1989 Arctic Cat Pantera 1989 Arctic Cat Panther 1989 Arctic Cat Super Jag 1989 Kawasaki KDX200 1989 Kawasaki KX250 1989 Kawasaki KX60 1989 Kawasaki KX80 1989 Kawasaki KX80 Big Wheel 1989 KTM 350 EXC 1989 Suzuki LT250R QuadRacer 1989 Suzuki RM125 1989 Yamaha YZ125 1988 Arctic Cat Cheetah 500 F/C 1988 Arctic Cat Cheetah Touring 1988 Arctic Cat Cougar 1988 Arctic Cat El Tigre 5000 1988 Arctic Cat Jag 440 1988 Arctic Cat Pantera 1988 Arctic Cat Panther 1988 Arctic Cat Super Jag 1988 Honda CR250R 1988 Honda TRX250R 1988 Kawasaki KDX200 1988 Kawasaki KX60 1988 Kawasaki KX80 1988 Kawasaki KX80 Big Wheel 1988 KTM 250 MXC 1988 KTM 350 MXC 1988 Suzuki LT250R QuadRacer 1988 Suzuki RM125 1988 Yamaha YZ125 1987 Arctic Cat Cheetah 500 F/C 1987 Arctic Cat Cougar 1987 Arctic Cat El Tigre 5000 1987 Arctic Cat Jag 440 1987 Arctic Cat Pantera 1987 Arctic Cat Panther 1987 Arctic Cat Super Jag 1987 Honda CR250R 1987 Honda TRX250R 1987 Kawasaki KDX200 1987 Kawasaki KX250 1987 Kawasaki KX60 1987 Kawasaki KX80 1987 Kawasaki KX80 Big Wheel 1987 KTM 250 MXC 1987 KTM 350 MXC 1987 Suzuki LT250R QuadRacer 1987 Suzuki RM125 1987 Yamaha YZ125 1987 Yamaha YZ250 1986 Arctic Cat Cheetah 500 F/C 1986 Arctic Cat Cougar 1986 Arctic Cat Jag 1986 Arctic Cat Pantera 1986 Arctic Cat Panther 1986 Honda ATC250R 1986 Husqvarna XC125 1986 Kawasaki KDX200 1986 Kawasaki KX250 1986 Kawasaki KX60 1986 Kawasaki KX80 1986 KTM 250 MXC 1986 KTM 350 MXC 1986 KTM 500 MXC 1986 Suzuki LT250R QuadRacer 1986 Suzuki RM125 1986 Yamaha YZ125 1986 Yamaha YZ250 1985 Arctic Cat Cougar 1985 Arctic Cat Cougar SE 1985 Arctic Cat Pantera 1985 Arctic Cat Panther 1985 Honda ATC250R 1985 Honda CR80R 1985 Husqvarna XC125 1985 Kawasaki KDX200 1985 Kawasaki KX60 1985 Kawasaki KX80 1985 Kawasaki ZX750 GPZ 1985 Kawasaki ZX750E Turbo 1985 KTM 250 MXC 1985 KTM 350 MXC 1985 KTM 500 MXC 1985 Suzuki LT250R QuadRacer 1985 Suzuki RM125 1985 Suzuki RM80 1985 Yamaha IT200 1985 Yamaha YZ125 1985 Yamaha YZ250 1984 Arctic Cat Panther 1984 Honda ATC250R 1984 Honda CR60R 1984 Honda CR80R 1984 Honda FL250 Odyssey 1984 Husqvarna XC125 1984 Kawasaki KDX200 1984 Kawasaki KDX250 1984 Kawasaki KDX80 1984 Kawasaki KX500 1984 Kawasaki KX60 1984 Kawasaki KX80 1984 Kawasaki ZX750 GPZ 1984 Kawasaki ZX750E Turbo 1984 KTM 250 MXC 1984 Suzuki RM125 1984 Suzuki RM80 1984 Yamaha IT200 1984 Yamaha YZ125 1984 Yamaha YZ250 1983 Honda CR60R 1983 Honda CR80R 1983 Honda FL250 Odyssey 1983 Husqvarna XC125 1983 Kawasaki KDX200 1983 Kawasaki KX500 1983 Kawasaki KX60 1983 Kawasaki KX80 1983 Kawasaki ZX750 GPZ 1983 Suzuki RM125 1983 Yamaha IT175 1983 Yamaha IT250 1983 Yamaha YZ125 1983 Yamaha YZ60 1983 Yamaha YZ80 1982 Honda CR80R 1982 Honda FL250 Odyssey 1982 Husqvarna XC125 1982 John Deere Liquifire 440 1982 John Deere Sportfire 1982 John Deere Trailfire 440 1982 Kawasaki KDX175 1982 Kawasaki KE125 1982 Kawasaki KX125 1982 Kawasaki KX250 1982 Kawasaki KX80 1982 Suzuki RM125 1982 Suzuki RM465 1982 Suzuki RM80 1982 Yamaha IT175 1982 Yamaha IT250 1982 Yamaha YZ100 1982 Yamaha YZ125 1982 Yamaha YZ250 1982 Yamaha YZ60 1982 Yamaha YZ80 1981 Arctic Cat El Tigre 5000 F/C 1981 Arctic Cat Jag 4000 1981 Arctic Cat Pantera 1981 Arctic Cat Pantera ES (Electric Start) 1981 Arctic Cat Panther 1981 Arctic Cat Panther West 1981 Arctic Cat Trail Cat 400 1981 Honda CR250R 1981 Honda CR80R 1981 John Deere Liquifire 440 1981 John Deere Sportfire 1981 John Deere Trailfire 440 1981 Kawasaki KDX175 1981 Kawasaki KX125 1981 Kawasaki KX250 1981 Kawasaki KX420 1981 Kawasaki KX80 1981 Suzuki PE400 1981 Suzuki RM100 1981 Suzuki RM250 1981 Suzuki RS250 1981 Yamaha DT175 1981 Yamaha EX440 1981 Yamaha IT125 1981 Yamaha IT175 1981 Yamaha IT250 1981 Yamaha YZ250 1981 Yamaha YZ60 1980 Arctic Cat Pantera 1980 Arctic Cat Pantera ES (Electric Start) 1980 Arctic Cat Panther 1980 Arctic Cat Trail Cat 400 1980 Can-Am 400 MX-6 1980 Honda CR250R 1980 Honda CR80R 1980 Kawasaki KDX175 1980 Kawasaki KX125 1980 Kawasaki KX250 1980 Kawasaki KX420 1980 Kawasaki KX80 1980 Suzuki PE250 1980 Suzuki PE400 1980 Suzuki RM100 1980 Suzuki RM125 1980 Suzuki RM250 1980 Yamaha DT175 1980 Yamaha EX440 1980 Yamaha IT125 1980 Yamaha IT175 1980 Yamaha IT250 1980 Yamaha SRX440 1980 Yamaha YZ250 1980 Yamaha YZ50 1979 Arctic Cat Pantera 1979 Arctic Cat Panther 1979 Bultaco Pursang 250 1979 Honda CR250R 1979 Kawasaki KX125 1979 Kawasaki KX250 1979 Suzuki RM100 1979 Suzuki RM125 1979 Suzuki RM250 1979 Yamaha EX440 1979 Yamaha IT175 1979 Yamaha IT250 1979 Yamaha SRX440 1979 Yamaha YZ250 1978 Arctic Cat Pantera 5000 F/A 1978 Arctic Cat Pantera 5000 F/C 1978 Arctic Cat Panther 4000 1978 Bultaco Pursang 250 1978 Honda CR250R 1978 Kawasaki KX125 1978 Kawasaki KX250 1978 Suzuki PE175 1978 Suzuki RM100 1978 Suzuki RM125 1978 Suzuki RM250 1978 Yamaha EX340 1978 Yamaha EX440 1978 Yamaha IT250 1978 Yamaha SR433 1978 Yamaha SRX440 1978 Yamaha YZ250 1977 Arctic Cat El Tigre 5000 1977 Arctic Cat Panther 4000 1977 Arctic Cat Z 250 1977 Bultaco Pursang 250 1977 Can-Am 175 MX-3 1977 Harley Davidson SS125 1977 Harley Davidson SS175 1977 Harley Davidson SS250 1977 Harley Davidson SXT125 1977 Suzuki GT250 1977 Suzuki RM100 1977 Suzuki RM125 1977 Suzuki RM250 1977 Suzuki RM370 1977 Yamaha EX340 1977 Yamaha EX440 1977 Yamaha IT250 1977 Yamaha SRX440 1977 Yamaha YZ250 1976 Harley Davidson SS125 1976 Harley Davidson SS175 1976 Harley Davidson SS250 1976 Harley Davidson SXT125 1976 Honda CR250M 1976 Kawasaki KX125 1976 Kawasaki KX250 1976 Kawasaki KX400 1976 Sno-Jet SST 440 1976 Sno-Jet SST F/A 340 1976 Sno-Jet SST F/A 440 1976 Suzuki GT250 1976 Suzuki RM100 1976 Suzuki RM125 1976 Suzuki RM250 1976 Suzuki RM370 1976 Yamaha DT400 1976 Yamaha EX340 1976 Yamaha EX440 1976 Yamaha MX125 1976 Yamaha SRX440 1976 Yamaha TY175 1976 Yamaha YZ125 1976 Yamaha YZ250 1975 Harley Davidson SS250 1975 Harley Davidson SX175 1975 Honda CR250M 1975 Kawasaki KX125 1975 Kawasaki KX250 1975 Kawasaki KX400 1975 Sno-Jet SST 440 1975 Sno-Jet SST F/A 340 1975 Sno-Jet SST F/A 440 1975 Suzuki RM125 1975 Yamaha DT400 1975 Yamaha GPX338 1975 Yamaha GPX433 1975 Yamaha MX125 1975 Yamaha MX400 1975 Yamaha SR643 1975 Yamaha YZ125 1975 Yamaha YZ250 1974 Arctic Cat El Tigre 295 1974 Harley Davidson SX175 1974 Honda CR250M 1974 Kawasaki KX125 1974 Kawasaki KX250 1974 Sno-Jet SST 340 1974 Sno-Jet SST 440 1974 Yamaha DT360 1974 Yamaha GP292 1974 Yamaha GPX338 1974 Yamaha GPX433 1974 Yamaha MX125 1974 Yamaha YZ125 1974 Yamaha YZ250 1973 Arctic Cat Panther 440 1973 Arctic Cat Puma 440 1973 Honda CR250M 1973 Sno-Jet SST 340 1973 Sno-Jet SST 440 1973 Sno-Jet Star-Jet 338 1973 Sno-Jet Star-Jet 433 1973 Yamaha EW643 1973 Yamaha GP292 1973 Yamaha RT2 1973 Yamaha RT3 1973 Yamaha SR433 1973 Yamaha SR643 1972 Sno-Jet SST 292 1972 Sno-Jet SST 338 1972 Sno-Jet SST 433 1972 Sno-Jet Star-Jet +2 338 1972 Sno-Jet Star-Jet 292 Hirth 1972 Sno-Jet Super-Jet 433 1972 Yamaha AT2M 1972 Yamaha EW643 1972 Yamaha RT2 1971 Sno-Jet S/S Jet 292 1971 Sno-Jet S/S Jet 338 1971 Sno-Jet Star-Jet 292 Hirth 1971 Sno-Jet Star-Jet 338 1971 Yamaha AT1 1971 Yamaha AT1M 1971 Yamaha RT1 1971 Yamaha SS433 1970 Sno-Jet Star-Jet 292 Hirth 1970 Sno-Jet Super-Jet 338 1970 Yamaha AT1 1970 Yamaha AT1M 1970 Yamaha RT1 1969 Yamaha AT1 1969 Yamaha SS338

NGK Iridium IX Spark Plug

NGK Iridium IX spark plugs are designed specifically for the performance enthusiast. Iridium IX spark plugs offer extreme ignitibility, improved throttle response and superior anti-fouling. The fine-wire iridium center electrode ensures high durability and a consistently stable spark. A special taper-cut ground electrode shape allows more area for faster flame expansion. Iridium alloy has an extremely high melting point, perfect for today's high-performance engines. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.

  • INV: NGK Iridium IX Spark Plug
  • DEF: Spark Plug
  • SHO: NGK Iridium IX Plug
  • ABR: Spark Plug
  • ASM: ATV - 1988-82 HON, M/C - 2006-82 APRILIA, 1987-77 CAN AM, 2005-01 GAS GAS, 2007-73 HON, 2006-90 HUSQ, 1998-74 KAW, 2004-80 KTM, 1998-75 SUZ, 2006-72 YAM, PWC - 1999-93 ARC CAT, 2006-95 KAW, 2004-98 POL, SNOW - 1997-73 ARC CAT, 1981-76 YAM
Remanufactured PartN
Emission Code 1
Pallet Layer Maximum9
Country of Origin (Primary)JP
Part Number – Old3245
Harmonized Tariff Code (HTS)8511100000
National Popularity DescriptionLast 5% of Product Group Sales Value
Maximum Cases per Pallet Layer12
Part Number – Old5827
MSDS Required FlagN
1159Nickel Core
5501
1156Standard
555Flat
11325000
55113/16"
548Iridium
5539
547Copper Core
5490.032
1155Taper Cut
55714.00
55255.00
5560.75