Description

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.

Specifications

Compatibility

  • 1984-1992 Buick Century Custom L4.2474cc
  • 1984 Buick Century Estate L4.2474cc
  • 1985-1989 Buick Century Estate Wagon L4.2474cc
  • 1984-1992 Buick Century Limited L4.2474cc
  • 1984 Buick Century Olympia Limited L4.2474cc
  • 1991-1992 Buick Century Special L4.2474cc
  • 1990-1991 Buick Skylark Base L4.2474cc
  • 1983-1991 Buick Skylark Custom L4.2474cc
  • 1990-1991 Buick Skylark Gran Sport L4.2474cc
  • 1983-1989 Buick Skylark Limited L4.2474cc
  • 1990-1991 Buick Skylark Luxury Edition L4.2474cc
  • 1986-1987 Buick Somerset Custom L4.2474cc
  • 1986-1987 Buick Somerset Limited L4.2474cc
  • 1986 Buick Somerset T-Type L4.2474cc
  • 1985 Buick Somerset Regal Base L4.2474cc
  • 1985 Buick Somerset Regal Limited L4.2474cc
  • 1985-1990 Chevrolet Astro Base L4.2474cc
  • 1985 Chevrolet Astro CL L4.2474cc
  • 1985 Chevrolet Astro CS L4.2474cc
  • 1984-1986 Chevrolet Camaro Sport L4.2474cc
  • 1984-1990 Chevrolet Celebrity Base L4.2474cc
  • 1989 Chevrolet Celebrity CL L4.2474cc
  • 1985 Chevrolet Celebrity Classic L4.2474cc
  • 1985-1987 Chevrolet Celebrity Estate L4.2474cc
  • 1984-1990 Chevrolet Celebrity Eurosport L4.2474cc
  • 1984-1985 Chevrolet Citation II Base L4.2474cc
  • 1984-1985 Chevrolet Citation II X-11 L4.2474cc
  • 1987-1993 Chevrolet LLV Base L4.2474cc
  • 1990-1992 Chevrolet Lumina Base L4.2474cc
  • 1978 Chevrolet Monza 2+2 L4.2474cc
  • 1978 Chevrolet Monza 2+2 Sport L4.2474cc
  • 1978 Chevrolet Monza 2+2 Spyder L4.2474cc
  • 1978 Chevrolet Monza Base L4.2474cc
  • 1978 Chevrolet Monza S L4.2474cc
  • 1978 Chevrolet Monza Sport L4.2474cc
  • 1985-1993 Chevrolet S10 Base L4.2474cc
  • 1985-1990 Chevrolet S10 Durango L4.2474cc
  • 1992-1993 Chevrolet S10 EL L4.2474cc
  • 1985-1989 Chevrolet S10 Sport L4.2474cc
  • 1985-1992 Chevrolet S10 Tahoe L4.2474cc
  • 1985-1988 Chevrolet S10 Blazer Base L4.2474cc
  • 1987-1988 Chevrolet S10 Blazer High Country L4.2474cc
  • 1985-1988 Chevrolet S10 Blazer Sport L4.2474cc
  • 1985-1988 Chevrolet S10 Blazer Tahoe L4.2474cc
  • 1975 Chevrolet Vega Base L4.2294cc
  • 1975 Chevrolet Vega Estate Wagon L4.2294cc
  • 1975 Chevrolet Vega LX L4.2294cc
  • 1975 Chevrolet Vega Panel Express L4.2294cc
  • 1985-1990 GMC S15 Base L4.2474cc
  • 1987 GMC S15 EL L4.2474cc
  • 1986-1988 GMC S15 Gypsy L4.2474cc
  • 1985-1990 GMC S15 High Sierra L4.2474cc
  • 1985-1990 GMC S15 Sierra Classic L4.2474cc
  • 1985-1988 GMC S15 Jimmy Base L4.2474cc
  • 1985-1988 GMC S15 Jimmy Gypsy L4.2474cc
  • 1985 GMC S15 Jimmy High Sierra L4.2474cc
  • 1985-1988 GMC S15 Jimmy Sierra Classic L4.2474cc
  • 1988 GMC S15 Jimmy Timberline L4.2474cc
  • 1985-1990 GMC Safari Base L4.2474cc
  • 1985 GMC Safari SL L4.2474cc
  • 1985 GMC Safari SLE L4.2474cc
  • 1985 GMC Safari SLX L4.2474cc
  • 1991-1993 GMC Sonoma Base L4.2474cc
  • 1991-1993 GMC Sonoma SLE L4.2474cc
  • 1993 GMC Sonoma SLS L4.2474cc
  • 1985 Oldsmobile Calais 500 L4.2474cc
  • 1985-1987 Oldsmobile Calais Base L4.2474cc
  • 1986 Oldsmobile Calais ES L4.2474cc
  • 1986-1987 Oldsmobile Calais GT L4.2474cc
  • 1985-1987 Oldsmobile Calais Supreme L4.2474cc
  • 1988-1991 Oldsmobile Cutlass Calais Base L4.2474cc
  • 1988-1991 Oldsmobile Cutlass Calais GT L4.2474cc
  • 1989-1991 Oldsmobile Cutlass Calais S L4.2474cc
  • 1988-1989 Oldsmobile Cutlass Calais SL L4.2474cc
  • 1988-1992 Oldsmobile Cutlass Ciera Base L4.2474cc
  • 1984-1988 Oldsmobile Cutlass Ciera Brougham L4.2474cc
  • 1984-1985 Oldsmobile Cutlass Ciera Cruiser LS L4.2474cc
  • 1985-1986 Oldsmobile Cutlass Ciera ES L4.2474cc
  • 1986-1987 Oldsmobile Cutlass Ciera GT L4.2474cc
  • 1985-1986 Oldsmobile Cutlass Ciera Holiday L4.2474cc
  • 1984-1988 Oldsmobile Cutlass Ciera LS L4.2474cc
  • 1986-1988 Oldsmobile Cutlass Ciera S L4.2474cc
  • 1990-1991 Oldsmobile Cutlass Ciera S L4.2474cc
  • 1986-1990 Oldsmobile Cutlass Ciera SL L4.2474cc
  • 1989-1990 Oldsmobile Cutlass Cruiser Base L4.2474cc
  • 1987 Oldsmobile Cutlass Cruiser Brougham L4.2474cc
  • 1988 Oldsmobile Cutlass Cruiser Brougham LS L4.2474cc
  • 1987-1988 Oldsmobile Cutlass Cruiser LS L4.2474cc
  • 1988-1989 Oldsmobile Cutlass Cruiser SL L4.2474cc
  • 1984 Oldsmobile Omega Base L4.2474cc
  • 1984 Oldsmobile Omega Brougham L4.2474cc
  • 1984 Oldsmobile Omega ES L4.2474cc
  • 1978 Oldsmobile Starfire Base L4.2474cc
  • 1978 Oldsmobile Starfire Firenza L4.2474cc
  • 1978 Oldsmobile Starfire GT L4.2474cc
  • 1978 Oldsmobile Starfire SX L4.2474cc
  • 1984-1989 Pontiac 6000 Base L4.2474cc
  • 1984-1991 Pontiac 6000 LE L4.2474cc
  • 1975 Pontiac Astre Base L4.2294cc
  • 1975 Pontiac Astre Custom L4.2294cc
  • 1975 Pontiac Astre GT L4.2294cc
  • 1975 Pontiac Astre GT Safari L4.2294cc
  • 1975 Pontiac Astre S L4.2294cc
  • 1975 Pontiac Astre S Safari L4.2294cc
  • 1975 Pontiac Astre Safari L4.2294cc
  • 1975 Pontiac Astre SJ L4.2294cc
  • 1975 Pontiac Astre SJ Safari L4.2294cc
  • 1984-1985 Pontiac Fiero Base L4.2474cc
  • 1984-1987 Pontiac Fiero SE L4.2474cc
  • 1984-1988 Pontiac Fiero Sport L4.2474cc
  • 1986-1988 Pontiac Fiero Value Leader L4.2474cc
  • 1984-1986 Pontiac Firebird Base L4.2474cc
  • 1984 Pontiac Firebird S/E L4.2474cc
  • 1985-1988 Pontiac Grand Am Base L4.2474cc
  • 1985-1991 Pontiac Grand Am LE L4.2474cc
  • 1987 Pontiac Grand Am SE L4.2474cc
  • 1991 Pontiac Grand Am Value Leader L4.2474cc
  • 1978 Pontiac Phoenix Base L4.2474cc
  • 1984 Pontiac Phoenix Base L4.2474cc
  • 1984 Pontiac Phoenix LE L4.2474cc
  • 1978 Pontiac Phoenix LJ L4.2474cc
  • 1978 Pontiac Phoenix SJ L4.2474cc
  • 1978 Pontiac Sunbird Base L4.2474cc
  • 1978 Pontiac Sunbird Safari L4.2474cc

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.

  • 1984-1992 Buick Century Custom L4.2474cc
  • 1984 Buick Century Estate L4.2474cc
  • 1985-1989 Buick Century Estate Wagon L4.2474cc
  • 1984-1992 Buick Century Limited L4.2474cc
  • 1984 Buick Century Olympia Limited L4.2474cc
  • 1991-1992 Buick Century Special L4.2474cc
  • 1990-1991 Buick Skylark Base L4.2474cc
  • 1983-1991 Buick Skylark Custom L4.2474cc
  • 1990-1991 Buick Skylark Gran Sport L4.2474cc
  • 1983-1989 Buick Skylark Limited L4.2474cc
  • 1990-1991 Buick Skylark Luxury Edition L4.2474cc
  • 1986-1987 Buick Somerset Custom L4.2474cc
  • 1986-1987 Buick Somerset Limited L4.2474cc
  • 1986 Buick Somerset T-Type L4.2474cc
  • 1985 Buick Somerset Regal Base L4.2474cc
  • 1985 Buick Somerset Regal Limited L4.2474cc
  • 1985-1990 Chevrolet Astro Base L4.2474cc
  • 1985 Chevrolet Astro CL L4.2474cc
  • 1985 Chevrolet Astro CS L4.2474cc
  • 1984-1986 Chevrolet Camaro Sport L4.2474cc
  • 1984-1990 Chevrolet Celebrity Base L4.2474cc
  • 1989 Chevrolet Celebrity CL L4.2474cc
  • 1985 Chevrolet Celebrity Classic L4.2474cc
  • 1985-1987 Chevrolet Celebrity Estate L4.2474cc
  • 1984-1990 Chevrolet Celebrity Eurosport L4.2474cc
  • 1984-1985 Chevrolet Citation II Base L4.2474cc
  • 1984-1985 Chevrolet Citation II X-11 L4.2474cc
  • 1987-1993 Chevrolet LLV Base L4.2474cc
  • 1990-1992 Chevrolet Lumina Base L4.2474cc
  • 1978 Chevrolet Monza 2+2 L4.2474cc
  • 1978 Chevrolet Monza 2+2 Sport L4.2474cc
  • 1978 Chevrolet Monza 2+2 Spyder L4.2474cc
  • 1978 Chevrolet Monza Base L4.2474cc
  • 1978 Chevrolet Monza S L4.2474cc
  • 1978 Chevrolet Monza Sport L4.2474cc
  • 1985-1993 Chevrolet S10 Base L4.2474cc
  • 1985-1990 Chevrolet S10 Durango L4.2474cc
  • 1992-1993 Chevrolet S10 EL L4.2474cc
  • 1985-1989 Chevrolet S10 Sport L4.2474cc
  • 1985-1992 Chevrolet S10 Tahoe L4.2474cc
  • 1985-1988 Chevrolet S10 Blazer Base L4.2474cc
  • 1987-1988 Chevrolet S10 Blazer High Country L4.2474cc
  • 1985-1988 Chevrolet S10 Blazer Sport L4.2474cc
  • 1985-1988 Chevrolet S10 Blazer Tahoe L4.2474cc
  • 1975 Chevrolet Vega Base L4.2294cc
  • 1975 Chevrolet Vega Estate Wagon L4.2294cc
  • 1975 Chevrolet Vega LX L4.2294cc
  • 1975 Chevrolet Vega Panel Express L4.2294cc
  • 1985-1990 GMC S15 Base L4.2474cc
  • 1987 GMC S15 EL L4.2474cc
  • 1986-1988 GMC S15 Gypsy L4.2474cc
  • 1985-1990 GMC S15 High Sierra L4.2474cc
  • 1985-1990 GMC S15 Sierra Classic L4.2474cc
  • 1985-1988 GMC S15 Jimmy Base L4.2474cc
  • 1985-1988 GMC S15 Jimmy Gypsy L4.2474cc
  • 1985 GMC S15 Jimmy High Sierra L4.2474cc
  • 1985-1988 GMC S15 Jimmy Sierra Classic L4.2474cc
  • 1988 GMC S15 Jimmy Timberline L4.2474cc
  • 1985-1990 GMC Safari Base L4.2474cc
  • 1985 GMC Safari SL L4.2474cc
  • 1985 GMC Safari SLE L4.2474cc
  • 1985 GMC Safari SLX L4.2474cc
  • 1991-1993 GMC Sonoma Base L4.2474cc
  • 1991-1993 GMC Sonoma SLE L4.2474cc
  • 1993 GMC Sonoma SLS L4.2474cc
  • 1985 Oldsmobile Calais 500 L4.2474cc
  • 1985-1987 Oldsmobile Calais Base L4.2474cc
  • 1986 Oldsmobile Calais ES L4.2474cc
  • 1986-1987 Oldsmobile Calais GT L4.2474cc
  • 1985-1987 Oldsmobile Calais Supreme L4.2474cc
  • 1988-1991 Oldsmobile Cutlass Calais Base L4.2474cc
  • 1988-1991 Oldsmobile Cutlass Calais GT L4.2474cc
  • 1989-1991 Oldsmobile Cutlass Calais S L4.2474cc
  • 1988-1989 Oldsmobile Cutlass Calais SL L4.2474cc
  • 1988-1992 Oldsmobile Cutlass Ciera Base L4.2474cc
  • 1984-1988 Oldsmobile Cutlass Ciera Brougham L4.2474cc
  • 1984-1985 Oldsmobile Cutlass Ciera Cruiser LS L4.2474cc
  • 1985-1986 Oldsmobile Cutlass Ciera ES L4.2474cc
  • 1986-1987 Oldsmobile Cutlass Ciera GT L4.2474cc
  • 1985-1986 Oldsmobile Cutlass Ciera Holiday L4.2474cc
  • 1984-1988 Oldsmobile Cutlass Ciera LS L4.2474cc
  • 1986-1988 Oldsmobile Cutlass Ciera S L4.2474cc
  • 1990-1991 Oldsmobile Cutlass Ciera S L4.2474cc
  • 1986-1990 Oldsmobile Cutlass Ciera SL L4.2474cc
  • 1989-1990 Oldsmobile Cutlass Cruiser Base L4.2474cc
  • 1987 Oldsmobile Cutlass Cruiser Brougham L4.2474cc
  • 1988 Oldsmobile Cutlass Cruiser Brougham LS L4.2474cc
  • 1987-1988 Oldsmobile Cutlass Cruiser LS L4.2474cc
  • 1988-1989 Oldsmobile Cutlass Cruiser SL L4.2474cc
  • 1984 Oldsmobile Omega Base L4.2474cc
  • 1984 Oldsmobile Omega Brougham L4.2474cc
  • 1984 Oldsmobile Omega ES L4.2474cc
  • 1978 Oldsmobile Starfire Base L4.2474cc
  • 1978 Oldsmobile Starfire Firenza L4.2474cc
  • 1978 Oldsmobile Starfire GT L4.2474cc
  • 1978 Oldsmobile Starfire SX L4.2474cc
  • 1984-1989 Pontiac 6000 Base L4.2474cc
  • 1984-1991 Pontiac 6000 LE L4.2474cc
  • 1975 Pontiac Astre Base L4.2294cc
  • 1975 Pontiac Astre Custom L4.2294cc
  • 1975 Pontiac Astre GT L4.2294cc
  • 1975 Pontiac Astre GT Safari L4.2294cc
  • 1975 Pontiac Astre S L4.2294cc
  • 1975 Pontiac Astre S Safari L4.2294cc
  • 1975 Pontiac Astre Safari L4.2294cc
  • 1975 Pontiac Astre SJ L4.2294cc
  • 1975 Pontiac Astre SJ Safari L4.2294cc
  • 1984-1985 Pontiac Fiero Base L4.2474cc
  • 1984-1987 Pontiac Fiero SE L4.2474cc
  • 1984-1988 Pontiac Fiero Sport L4.2474cc
  • 1986-1988 Pontiac Fiero Value Leader L4.2474cc
  • 1984-1986 Pontiac Firebird Base L4.2474cc
  • 1984 Pontiac Firebird S/E L4.2474cc
  • 1985-1988 Pontiac Grand Am Base L4.2474cc
  • 1985-1991 Pontiac Grand Am LE L4.2474cc
  • 1987 Pontiac Grand Am SE L4.2474cc
  • 1991 Pontiac Grand Am Value Leader L4.2474cc
  • 1978 Pontiac Phoenix Base L4.2474cc
  • 1984 Pontiac Phoenix Base L4.2474cc
  • 1984 Pontiac Phoenix LE L4.2474cc
  • 1978 Pontiac Phoenix LJ L4.2474cc
  • 1978 Pontiac Phoenix SJ L4.2474cc
  • 1978 Pontiac Sunbird Base L4.2474cc
  • 1978 Pontiac Sunbird Safari L4.2474cc

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