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 |
|---|---|---|---|
| 1991 | Alfa Romeo | 164 | Base |
| 1991-1993 | Alfa Romeo | 164 | L |
| 1969-1971 | Alfa Romeo | Berlina | Base |
| 1967-1968 | Alfa Romeo | Duetto 1600 | Spider |
| 1964-1967 | Alfa Romeo | Giulia | Spider |
| 1967-1968 | Alfa Romeo | Giulia Sprint | Base |
| 1969-1974 | Alfa Romeo | GT Veloce | Base |
| 1964 | Alfa Romeo | GTC | Base |
| 1967-1968 | Alfa Romeo | GTV | Base |
| 1987-1989 | Alfa Romeo | Milano | Verde |
| 1969-1971,1991-1994 | Alfa Romeo | Spider | Base |
| 1985-1990 | Alfa Romeo | Spider | Graduate |
| 1986-1990 | Alfa Romeo | Spider | Quadrifoglio |
| 1970-1994 | Alfa Romeo | Spider | Veloce |
| 1972-1973 | Audi | 100 Series | Base |
| 1972-1973 | Audi | 100 Series | GL |
| 1972-1977 | Audi | 100 Series | LS |
| 1985 | Audi | 5000 | CS Turbo |
| 1984-1985 | Audi | 5000 | S Turbo |
| 1983-1985 | Audi | Quattro | Base |
| 1976-1984 | BMW | R100RS | Base |
| 1978-1985 | BMW | R100RT | Base |
| 1976-1980 | BMW | R100S | Base |
| 1978-1980 | BMW | R100T | Base |
| 1978-1985 | BMW | R45 | Base |
| 1969-1973 | BMW | R50/5 | Base |
| 1969-1974 | BMW | R60/5 | Base |
| 1973-1976 | BMW | R60/6 | Base |
| 1976-1979 | BMW | R60/7 | Base |
| 1978-1987 | BMW | R65 | Base |
| 1981-1985 | BMW | R65LS | Base |
| 1989 | Chrysler | Conquest | TSi |
| 2005-2006 | Cobra | CM50 | Base |
| 2019 | Cobra | CX50 FWE | Base |
| 2019 | Cobra | CX50 P3 | Base |
| 2019 | Cobra | CX50-JR | Base |
| 2019 | Cobra | CX50-SR | Base |
| 2007-2009 | Cobra | CX65 | Base |
| 2007-2009 | Cobra | ECX50 | Base |
| 2006-2009 | Cobra | ECX70 | Base |
| 2005-2006 | Cobra | KING | Base |
| 2006 | Cobra | P3 | Base |
| 1984-1986 | Dodge | Colt | DL |
| 1985-1988 | Dodge | Colt | Premier |
| 1975-1980 | Ferrari | 308 GTB | Base |
| 1983-1984 | Ferrari | 308 GTB | Quattrovalvole |
| 1981-1982 | Ferrari | 308 GTBi | Base |
| 1977-1980 | Ferrari | 308 GTS | Base |
| 1983-1984 | Ferrari | 308 GTS | Quattrovalvole |
| 1981-1982 | Ferrari | 308 GTSi | Base |
| 1968-1970 | Ferrari | 365 GT | Base |
| 1976 | Ferrari | 365 GT4 | 2+2 |
| 1973-1974 | Ferrari | 365 GT4 | Base |
| 1975 | Ferrari | 365 GT4 | BB |
| 1975 | Ferrari | 365 GT4 | BB Competizione |
| 1974 | Ferrari | 365 GT4 BB | Base |
| 1968-1974 | Ferrari | 365 GTB/4 | Daytona |
| 1968-1970 | Ferrari | 365 GTC | Base |
| 1971-1972 | Ferrari | 365 GTC/4 | Base |
| 1968-1970 | Ferrari | 365 GTS | Base |
| 1970-1974 | Ferrari | 365 GTS/4 | Daytona |
| 1975-1979 | Ferrari | Dino 308 GT4 | Base |
| 1967-1971 | Fiat | 850 | Base |
| 1970-1971 | Fiat | 850 | Racer |
| 1967-1973 | Fiat | 850 | Spider |
| 1978-1979 | Honda | Civic | CVCC |
| 1989 | Honda | TRX250R | Base |
| 1982 | Kawasaki | AR80 | Base |
| 1964-1966 | Lamborghini | 350GT | Base |
| 1966-1967 | Lamborghini | 400GT | Base |
| 1974 | Lamborghini | Countach | Base |
| 1975-1976 | Lamborghini | Countach | LP400 |
| 1981-1982 | Lamborghini | Countach | LP400S |
| 1975-1978 | Lamborghini | Espada | S3 |
| 1968-1969 | Lamborghini | Islero | S |
| 1975-1976 | Lamborghini | Jarama | 400GTS |
| 1966-1967 | Lamborghini | Miura | Base |
| 1967-1974 | Lotus | Elan | 2 |
| 1969-1970 | Lotus | Elan | 2S |
| 1972-1974 | Lotus | Elan | 2S 130 |
| 1962-1975 | Lotus | Elan | Base |
| 1968-1971 | Lotus | Elan | S4 |
| 1971-1974 | Lotus | Elan | Sprint |
| 1989 | Lotus | Esprit | Turbo |
| 1989-1991 | Lotus | Esprit | Turbo SE |
| 1967-1975 | Lotus | Europa | Base |
| 1967-1970 | Lotus | Europa | S1 |
| 1969-1972 | Lotus | Europa | S2 |
| 1971-1974 | Lotus | Europa | Special |
| 1971-1974 | Lotus | Europa | Twin |
| 1969-1975 | Lotus | Seven | Base |
| 1989-1990 | Maserati | 228i | Base |
| 1986-1987 | Maserati | 425 | Base |
| 1987 | Maserati | Biturbo | Base |
| 1968-1970 | Maserati | Mistral | Base |
| 1986-1987,1989-1991 | Maserati | Spyder | Base |
| 1954-1959 | Mercedes-Benz | 300SL | Base |
| 1984-1988 | Mitsubishi | Cordia | Turbo |
| 2003-2005 | Mitsubishi | Lancer | Evolution |
| 2005 | Mitsubishi | Lancer | Evolution MR |
| 2005 | Mitsubishi | Lancer | Evolution RS |
| 1985-1988 | Mitsubishi | Mirage | Turbo |
| 1989 | Mitsubishi | Starion | ESi-R |
| 1984-1988 | Mitsubishi | Tredia | Turbo |
| 1971-1972 | Peugeot | 304 | Base |
| 1984-1986 | Plymouth | Colt | DL |
| 1985-1986 | Plymouth | Colt | Premier |
| 1994-1995 | Polaris | SL 650 | Base |
| 1997 | Polaris | SL 700 Deluxe | Base |
| 1994-1995 | Polaris | SL 750 | Base |
| 1995 | Polaris | SLT 750 | Base |
| 1974 | Porsche | 911 | Base |
| 1969 | Porsche | 911 | E |
| 1969,1974-1977 | Porsche | 911 | S |
| 1980-1983 | Porsche | 911 | SC |
| 1969-1971 | Porsche | 911 | T |
| 1977-1982 | Porsche | 924 | Base |
| 1979-1982 | Porsche | 924 | Turbo |
| 1989 | Porsche | 944 | S2 |
| 1978-1995 | Suzuki | DS80 | Base |
| 1980-1981 | Suzuki | TS185 | Base |
| 1980-1981 | Suzuki | TS250 | Base |
| 1980-1982 | Yamaha | SR250 | Base |
| 1981 | Yamaha | SR250T | Base |
| 1978-1979 | Yamaha | SR500 | Base |
| 1980-1982 | Yamaha | TT250 | Base |
| 1976-1981 | Yamaha | TT500 | Base |
| 1980-1983 | Yamaha | XJ650 Maxim | Base |
| 1982 | Yamaha | XJ650R Seca | Base |
| 1982-1983 | Yamaha | XJ750 Maxim | Base |
| 1983 | Yamaha | XJ750M Mid-Max | Base |
| 1981-1983 | Yamaha | XJ750R Seca | Base |
| 1977-1981 | Yamaha | XS400 | Base |
| 1977-1981 | Yamaha | XS650 | Base |
| 1977-1979 | Yamaha | XS750 | Base |
| 1980-1981 | Yamaha | XS850 | Base |
| 1980-1983 | Yamaha | XT250 | Base |
| 1976-1979 | Yamaha | XT500 | Base |
| 1984-1985 | Yamaha | XV1000 Virago | Base |
| 1986-1999 | Yamaha | XV1100 Virago | Base |
| 1983-1984 | Yamaha | XV500 Virago | Base |
| 1987-1988,1990,1993-2000 | Yamaha | XV535 Virago | Base |
| 1984-1987 | Yamaha | XV700 Virago | Base |
| 1981-1983,1988-1997 | Yamaha | XV750 Virago | Base |
| 1982-1983 | Yamaha | XV920 Virago | Base |
| 1983 | Yamaha | XV920M Mid-Virago | Base |
| 1999-2009 | Yamaha | XVS1100 V Star 1100 Custom | Base |
| 2000-2009 | Yamaha | XVS1100A V Star 1100 Classic | Base |
| 2002-2009 | Yamaha | XVS1100AT V Star 1100 Silverado | Base |
| 1982-1983 | Yamaha | YT175 Tri-Moto | Base |