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 |
|---|---|---|---|
| 1973-1974 | Buick | Apollo | Base |
| 1970,1972-1974 | Chevrolet | Bel Air | Base |
| 1970,1972 | Chevrolet | Biscayne | Base |
| 1970-1974 | Chevrolet | Blazer | Base |
| 1972 | Chevrolet | Brookwood | Base |
| 1978-1980 | Chevrolet | C10 | Big Ten |
| 1975-1980 | Chevrolet | C10 | Cheyenne |
| 1982-1983,1985-1986 | Chevrolet | C10 | Custom |
| 1975-1980 | Chevrolet | C10 | Custom Deluxe |
| 1975-1980,1982-1983,1985-1986 | Chevrolet | C10 | Scottsdale |
| 1975-1980,1982-1983,1985-1986 | Chevrolet | C10 | Silverado |
| 1970-1974 | Chevrolet | C10 Pickup | Base |
| 1970-1974 | Chevrolet | C10 Suburban | Base |
| 1981,1985-1986 | Chevrolet | C10 Suburban | Custom |
| 1975-1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C10 Suburban | Deluxe |
| 1975-1980,1985-1986 | Chevrolet | C10 Suburban | Scottsdale |
| 1975-1980,1985-1986 | Chevrolet | C10 Suburban | Silverado |
| 1975-1981 | Chevrolet | C20 | Cheyenne |
| 1981-1986 | Chevrolet | C20 | Custom |
| 1975-1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1975-1986 | Chevrolet | C20 | Scottsdale |
| 1975-1986 | Chevrolet | C20 | Silverado |
| 1970-1974 | Chevrolet | C20 Pickup | Base |
| 1970-1974 | Chevrolet | C20 Suburban | Base |
| 1981-1986 | Chevrolet | C20 Suburban | Custom |
| 1975-1980 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C20 Suburban | Deluxe |
| 1975-1980,1982,1984-1986 | Chevrolet | C20 Suburban | Scottsdale |
| 1975-1977,1979-1980,1982-1986 | Chevrolet | C20 Suburban | Silverado |
| 1975-1981 | Chevrolet | C30 | Cheyenne |
| 1981-1986 | Chevrolet | C30 | Custom |
| 1975-1980 | Chevrolet | C30 | Custom Deluxe |
| 1981 | Chevrolet | C30 | Deluxe |
| 1975-1986 | Chevrolet | C30 | Scottsdale |
| 1975-1986 | Chevrolet | C30 | Silverado |
| 1970-1974 | Chevrolet | C30 Pickup | Base |
| 1970,1972-1974 | Chevrolet | Camaro | Base |
| 1973-1974 | Chevrolet | Camaro | LT |
| 1970,1972-1973 | Chevrolet | Camaro | RS |
| 1970,1972 | Chevrolet | Camaro | SS |
| 1972-1974 | Chevrolet | Camaro | Z28 |
| 1970,1972 | Chevrolet | Caprice | Base |
| 1973-1974 | Chevrolet | Caprice | Classic |
| 1973-1974 | Chevrolet | Caprice | Estate |
| 1970-1972 | Chevrolet | Chevelle | Base |
| 1970-1972 | Chevrolet | Chevelle | Concours |
| 1970-1972 | Chevrolet | Chevelle | Concours Estate |
| 1973 | Chevrolet | Chevelle | Deluxe |
| 1970-1972 | Chevrolet | Chevelle | Greenbrier |
| 1970-1972 | Chevrolet | Chevelle | Malibu |
| 1970-1972 | Chevrolet | Chevelle | Nomad |
| 1970-1972 | Chevrolet | Chevelle | SS |
| 1970,1972-1974 | Chevrolet | Corvette | Base |
| 1970-1974,1976-1979 | Chevrolet | El Camino | Base |
| 1976-1977 | Chevrolet | El Camino | Classic |
| 1977-1978 | Chevrolet | El Camino | Conquista |
| 1969-1974 | Chevrolet | El Camino | Custom |
| 1979 | Chevrolet | El Camino | Royal Knight |
| 1970-1974,1976-1979 | Chevrolet | El Camino | SS |
| 1975-1980 | Chevrolet | G10 | Beauville |
| 1975-1980 | Chevrolet | G10 | Chevy Van |
| 1975-1983 | Chevrolet | G10 | Sportvan |
| 1970,1972-1974 | Chevrolet | G10 Van | Base |
| 1970,1972-1974 | Chevrolet | G10 Van | Sportvan |
| 1975-1982,1984-1986 | Chevrolet | G20 | Beauville |
| 1984 | Chevrolet | G20 | Bonaventure |
| 1975-1982,1984-1986 | Chevrolet | G20 | Chevy Van |
| 1978-1981 | Chevrolet | G20 | Nomad |
| 1975-1986 | Chevrolet | G20 | Sportvan |
| 1970-1974 | Chevrolet | G20 Van | Base |
| 1970-1974 | Chevrolet | G20 Van | Sportvan |
| 1975-1988 | Chevrolet | G30 | Beauville |
| 1983-1984 | Chevrolet | G30 | Bonaventure |
| 1975-1988 | Chevrolet | G30 | Chevy Van |
| 1975-1988 | Chevrolet | G30 | Hi-Cube |
| 1975-1986 | Chevrolet | G30 | Sportvan |
| 1971-1974 | Chevrolet | G30 Van | Base |
| 1972-1974 | Chevrolet | G30 Van | Sportvan |
| 1970,1972-1974 | Chevrolet | Impala | Base |
| 1975-1981 | Chevrolet | K10 | Cheyenne |
| 1981-1986 | Chevrolet | K10 | Custom |
| 1975-1980 | Chevrolet | K10 | Custom Deluxe |
| 1981 | Chevrolet | K10 | Deluxe |
| 1975-1986 | Chevrolet | K10 | Scottsdale |
| 1975-1986 | Chevrolet | K10 | Silverado |
| 1970-1974 | Chevrolet | K10 Pickup | Base |
| 1970-1974 | Chevrolet | K10 Suburban | Base |
| 1981-1983,1985-1986 | Chevrolet | K10 Suburban | Custom |
| 1975-1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1975-1980,1982,1985-1986 | Chevrolet | K10 Suburban | Scottsdale |
| 1975-1977,1979-1980,1982-1983,1985-1986 | Chevrolet | K10 Suburban | Silverado |
| 1975-1981 | Chevrolet | K20 | Cheyenne |
| 1981-1986 | Chevrolet | K20 | Custom |
| 1975-1980 | Chevrolet | K20 | Custom Deluxe |
| 1981 | Chevrolet | K20 | Deluxe |
| 1975-1986 | Chevrolet | K20 | Scottsdale |
| 1975-1983,1985-1986 | Chevrolet | K20 | Silverado |
| 1970-1974 | Chevrolet | K20 Pickup | Base |
| 1970-1974 | Chevrolet | K20 Suburban | Base |
| 1981-1986 | Chevrolet | K20 Suburban | Custom |
| 1975-1980 | Chevrolet | K20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K20 Suburban | Deluxe |
| 1975-1980,1982,1984-1986 | Chevrolet | K20 Suburban | Scottsdale |
| 1975-1977,1979-1980,1982-1983,1985-1986 | Chevrolet | K20 Suburban | Silverado |
| 1977-1981 | Chevrolet | K30 | Cheyenne |
| 1981-1986 | Chevrolet | K30 | Custom |
| 1977-1980 | Chevrolet | K30 | Custom Deluxe |
| 1981 | Chevrolet | K30 | Deluxe |
| 1977-1986 | Chevrolet | K30 | Scottsdale |
| 1977-1986 | Chevrolet | K30 | Silverado |
| 1970-1974 | Chevrolet | K30 Pickup | Base |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1975-1980 | Chevrolet | K5 Blazer | Cheyenne |
| 1981 | Chevrolet | K5 Blazer | Custom |
| 1975,1977-1980 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1978,1980-1981 | Chevrolet | K5 Blazer | Silverado |
| 1972 | Chevrolet | Kingswood | Base |
| 1972 | Chevrolet | Kingswood | Estate |
| 1973-1975 | Chevrolet | Laguna | Base |
| 1973 | Chevrolet | Laguna | Estate |
| 1975 | Chevrolet | Laguna | S3 |
| 1974 | Chevrolet | Laguna | Type S-3 |
| 1973-1974 | Chevrolet | Malibu | Base |
| 1974 | Chevrolet | Malibu | Classic |
| 1973-1974 | Chevrolet | Malibu | Estate |
| 1970-1974 | Chevrolet | Monte Carlo | Base |
| 1973-1974 | Chevrolet | Monte Carlo | Landau |
| 1973 | Chevrolet | Monte Carlo | S |
| 1970,1972-1974 | Chevrolet | Nova | Base |
| 1973-1974 | Chevrolet | Nova | Custom |
| 1975-1980 | Chevrolet | P10 | Base |
| 1975-1980 | Chevrolet | P10 | Step-Van |
| 1970,1972-1974 | Chevrolet | P10 Van | Base |
| 1975-1989 | Chevrolet | P20 | Base |
| 1975-1985,1987-1989 | Chevrolet | P20 | Step-Van |
| 1970-1974 | Chevrolet | P20 Van | Base |
| 1975-1989 | Chevrolet | P30 | Base |
| 1975-1985,1987-1989 | Chevrolet | P30 | Step-Van |
| 1970-1974 | Chevrolet | P30 Van | Base |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987-1988 | Chevrolet | R20 | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 | Scottsdale |
| 1987-1988 | Chevrolet | R20 | Silverado |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987-1988 | Chevrolet | R30 | Custom Deluxe |
| 1987-1988 | Chevrolet | R30 | Scottsdale |
| 1987-1988 | Chevrolet | R30 | Silverado |
| 1989 | Chevrolet | R3500 | Cheyenne |
| 1989 | Chevrolet | R3500 | Scottsdale |
| 1989 | Chevrolet | R3500 | Silverado |
| 1970,1972 | Chevrolet | Townsman | Base |
| 1987 | Chevrolet | V20 | Custom Deluxe |
| 1987 | Chevrolet | V20 | Scottsdale |
| 1987 | Chevrolet | V20 | Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987-1988 | Chevrolet | V30 | Custom Deluxe |
| 1987-1988 | Chevrolet | V30 | Scottsdale |
| 1987-1988 | Chevrolet | V30 | Silverado |
| 1989 | Chevrolet | V3500 | Cheyenne |
| 1989 | Chevrolet | V3500 | Scottsdale |
| 1989 | Chevrolet | V3500 | Silverado |
| 1975-1978 | GMC | C15 | Base |
| 1977-1978 | GMC | C15 | Heavy Half |
| 1975-1978 | GMC | C15 | High Sierra |
| 1977 | GMC | C15 | Indy Hauler |
| 1975-1978 | GMC | C15 | Sierra Classic |
| 1975-1978 | GMC | C15 | Sierra Grande |
| 1978 | GMC | C15 | Street Coupe |
| 1975-1978 | GMC | C15 Suburban | Base |
| 1975-1978 | GMC | C15 Suburban | High Sierra |
| 1975-1978 | GMC | C15 Suburban | Sierra Classic |
| 1975-1978 | GMC | C15 Suburban | Sierra Grande |
| 1970-1974 | GMC | C15/C1500 Pickup | Base |
| 1970-1974 | GMC | C15/C1500 Suburban | Base |
| 1979-1983,1985-1986 | GMC | C1500 | Base |
| 1979-1980 | GMC | C1500 | Heavy Half |
| 1979-1983,1985-1986 | GMC | C1500 | High Sierra |
| 1979-1983,1985-1986 | GMC | C1500 | Sierra Classic |
| 1979-1982 | GMC | C1500 | Sierra Grande |
| 1979-1982 | GMC | C1500 | Street Coupe |
| 1979-1983,1985-1986 | GMC | C1500 Suburban | Base |
| 1979-1983,1985-1986 | GMC | C1500 Suburban | High Sierra |
| 1979-1983,1985-1986 | GMC | C1500 Suburban | Sierra Classic |
| 1979-1982 | GMC | C1500 Suburban | Sierra Grande |
| 1975-1978 | GMC | C25 | Base |
| 1975-1978 | GMC | C25 | High Sierra |
| 1975-1978 | GMC | C25 | Sierra Classic |
| 1975-1978 | GMC | C25 | Sierra Grande |
| 1975-1978 | GMC | C25 Suburban | Base |
| 1975-1978 | GMC | C25 Suburban | High Sierra |
| 1975-1978 | GMC | C25 Suburban | Sierra Classic |
| 1975-1978 | GMC | C25 Suburban | Sierra Grande |
| 1970-1974 | GMC | C25/C2500 Pickup | Base |
| 1970-1974 | GMC | C25/C2500 Suburban | Base |
| 1979-1986 | GMC | C2500 | Base |
| 1979-1986 | GMC | C2500 | High Sierra |