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 |
|---|---|---|---|
| 1975 | Buick | Apollo | Base |
| 1975 | Buick | Apollo | SR |
| 1975 | Chevrolet | Bel Air | Base |
| 1978 | Chevrolet | C10 | Big Ten |
| 1975,1977-1978 | Chevrolet | C10 | Cheyenne |
| 1975,1977-1978 | Chevrolet | C10 | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | C10 | Scottsdale |
| 1975,1977-1978 | Chevrolet | C10 | Silverado |
| 1975,1977-1978 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | C10 Suburban | Scottsdale |
| 1975,1977-1978 | Chevrolet | C10 Suburban | Silverado |
| 1975,1977-1978 | Chevrolet | C20 | Cheyenne |
| 1975,1977-1978 | Chevrolet | C20 | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | C20 | Scottsdale |
| 1975,1977-1978 | Chevrolet | C20 | Silverado |
| 1975,1977-1978 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | C20 Suburban | Scottsdale |
| 1975,1977 | Chevrolet | C20 Suburban | Silverado |
| 1975,1977-1978 | Chevrolet | C30 | Cheyenne |
| 1975,1977-1978 | Chevrolet | C30 | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | C30 | Scottsdale |
| 1975,1977-1978 | Chevrolet | C30 | Silverado |
| 1975 | Chevrolet | Camaro | Base |
| 1975 | Chevrolet | Camaro | LT |
| 1975 | Chevrolet | Camaro | RS |
| 1975 | Chevrolet | Caprice | Classic |
| 1975 | Chevrolet | Caprice | Classic Sport |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1975 | Chevrolet | Corvette | Stingray |
| 1975,1978 | Chevrolet | El Camino | Base |
| 1975 | Chevrolet | El Camino | Classic |
| 1978 | Chevrolet | El Camino | Conquista |
| 1975,1978 | Chevrolet | El Camino | SS |
| 1975-1978 | Chevrolet | G10 | Beauville |
| 1975-1978 | Chevrolet | G10 | Chevy Van |
| 1975-1978 | Chevrolet | G10 | Sportvan |
| 1974 | Chevrolet | G10 Van | Base |
| 1974 | Chevrolet | G10 Van | Sportvan |
| 1975-1978 | Chevrolet | G20 | Beauville |
| 1975-1978 | Chevrolet | G20 | Chevy Van |
| 1978 | Chevrolet | G20 | Nomad |
| 1975-1978 | Chevrolet | G20 | Sportvan |
| 1974 | Chevrolet | G20 Van | Base |
| 1974 | Chevrolet | G20 Van | Sportvan |
| 1975-1978 | Chevrolet | G30 | Beauville |
| 1975-1978 | Chevrolet | G30 | Chevy Van |
| 1975-1978 | Chevrolet | G30 | Hi-Cube |
| 1975-1978 | Chevrolet | G30 | Sportvan |
| 1974 | Chevrolet | G30 Van | Base |
| 1974 | Chevrolet | G30 Van | Sportvan |
| 1975 | Chevrolet | Impala | Base |
| 1975 | Chevrolet | Impala | Custom |
| 1975 | Chevrolet | Impala | Sport |
| 1975,1977-1978 | Chevrolet | K10 | Cheyenne |
| 1975,1977-1978 | Chevrolet | K10 | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | K10 | Scottsdale |
| 1975,1977-1978 | Chevrolet | K10 | Silverado |
| 1975,1977-1978 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | K10 Suburban | Scottsdale |
| 1975,1977 | Chevrolet | K10 Suburban | Silverado |
| 1975,1977-1978 | Chevrolet | K20 | Cheyenne |
| 1975,1977-1978 | Chevrolet | K20 | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | K20 | Scottsdale |
| 1975,1977-1978 | Chevrolet | K20 | Silverado |
| 1975,1977-1978 | Chevrolet | K20 Suburban | Custom Deluxe |
| 1975,1977-1978 | Chevrolet | K20 Suburban | Scottsdale |
| 1975,1977 | Chevrolet | K20 Suburban | Silverado |
| 1977-1978 | Chevrolet | K30 | Cheyenne |
| 1977-1978 | Chevrolet | K30 | Custom Deluxe |
| 1977-1978 | Chevrolet | K30 | Scottsdale |
| 1977-1978 | Chevrolet | K30 | Silverado |
| 1975,1977-1978 | Chevrolet | K5 Blazer | Cheyenne |
| 1975,1977-1978 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1978 | Chevrolet | K5 Blazer | Silverado |
| 1975 | Chevrolet | Laguna | Base |
| 1975 | Chevrolet | Laguna | S3 |
| 1975 | Chevrolet | Malibu | Base |
| 1975 | Chevrolet | Malibu | Classic |
| 1975 | Chevrolet | Malibu | Classic Estate |
| 1975 | Chevrolet | Monte Carlo | S |
| 1975 | Chevrolet | Monza | 2+2 |
| 1975 | Chevrolet | Monza | S |
| 1975 | Chevrolet | Nova | Base |
| 1975 | Chevrolet | Nova | Custom |
| 1975 | Chevrolet | Nova | LN |
| 1975 | Chevrolet | Nova | Police |
| 1975,1977 | Chevrolet | P10 | Base |
| 1975,1977 | Chevrolet | P10 | Step-Van |
| 1975,1977-1978 | Chevrolet | P20 | Base |
| 1975,1977-1978 | Chevrolet | P20 | Step-Van |
| 1975,1977-1978 | Chevrolet | P30 | Base |
| 1975,1977-1978 | Chevrolet | P30 | Step-Van |
| 1975,1977-1978 | GMC | C15 | Base |
| 1977-1978 | GMC | C15 | Heavy Half |
| 1975,1977-1978 | GMC | C15 | High Sierra |
| 1977 | GMC | C15 | Indy Hauler |
| 1975,1977-1978 | GMC | C15 | Sierra Classic |
| 1975,1977-1978 | GMC | C15 | Sierra Grande |
| 1978 | GMC | C15 | Street Coupe |
| 1975,1977-1978 | GMC | C15 Suburban | Base |
| 1975,1977-1978 | GMC | C15 Suburban | High Sierra |
| 1975,1977-1978 | GMC | C15 Suburban | Sierra Classic |
| 1975,1977-1978 | GMC | C15 Suburban | Sierra Grande |
| 1975,1977-1978 | GMC | C25 | Base |
| 1975,1977-1978 | GMC | C25 | High Sierra |
| 1975,1977-1978 | GMC | C25 | Sierra Classic |
| 1975,1977-1978 | GMC | C25 | Sierra Grande |
| 1975,1977-1978 | GMC | C25 Suburban | Base |
| 1975,1977-1978 | GMC | C25 Suburban | High Sierra |
| 1975,1977-1978 | GMC | C25 Suburban | Sierra Classic |
| 1975,1977-1978 | GMC | C25 Suburban | Sierra Grande |
| 1975,1977-1978 | GMC | C35 | Base |
| 1975,1977-1978 | GMC | C35 | High Sierra |
| 1975,1977-1978 | GMC | C35 | Sierra Classic |
| 1975,1977-1978 | GMC | C35 | Sierra Grande |
| 1978 | GMC | Caballero | Base |
| 1978 | GMC | Caballero | Diablo |
| 1978 | GMC | Caballero | Laredo |
| 1975,1977-1978 | GMC | G15 | Rally |
| 1975,1977-1978 | GMC | G15 | Rally STX |
| 1975,1977-1978 | GMC | G15 | Vandura |
| 1974 | GMC | G15/G1500 Van | Rally |
| 1974 | GMC | G15/G1500 Van | Vandura |
| 1975,1977-1978 | GMC | G25 | Rally |
| 1975,1977-1978 | GMC | G25 | Rally STX |
| 1975,1977-1978 | GMC | G25 | Vandura |
| 1974 | GMC | G25/G2500 Van | Rally |
| 1974 | GMC | G25/G2500 Van | Vandura |
| 1975,1977-1978 | GMC | G35 | Magnavan |
| 1977-1978 | GMC | G35 | Rally |
| 1977-1978 | GMC | G35 | Rally Camper Special |
| 1977-1978 | GMC | G35 | Rally STX |
| 1977-1978 | GMC | G35 | Vandura |
| 1977-1978 | GMC | G35 | Vandura Special |
| 1974 | GMC | G35/G3500 Van | Base |
| 1974 | GMC | G35/G3500 Van | Rally |
| 1974 | GMC | G35/G3500 Van | Vandura |
| 1975,1977-1978 | GMC | Jimmy | Base |
| 1975,1977-1978 | GMC | Jimmy | High Sierra |
| 1975,1977-1978 | GMC | Jimmy | Sierra Classic |
| 1975,1977-1978 | GMC | Jimmy | Sierra Grande |
| 1978 | GMC | Jimmy | Street Coupe |
| 1975,1977-1978 | GMC | K15 | Base |
| 1975,1977-1978 | GMC | K15 | High Sierra |
| 1977 | GMC | K15 | Indy Hauler |
| 1975,1977-1978 | GMC | K15 | Sierra Classic |
| 1975,1977-1978 | GMC | K15 | Sierra Grande |
| 1975,1977 | GMC | K15 Suburban | Base |
| 1975,1977 | GMC | K15 Suburban | High Sierra |
| 1975,1977 | GMC | K15 Suburban | Sierra Classic |
| 1975,1977 | GMC | K15 Suburban | Sierra Grande |
| 1975,1977-1978 | GMC | K25 | Base |
| 1975,1977-1978 | GMC | K25 | High Sierra |
| 1975,1977-1978 | GMC | K25 | Sierra Classic |
| 1975,1977-1978 | GMC | K25 | Sierra Grande |
| 1975,1977-1978 | GMC | K25 Suburban | Base |
| 1975,1977-1978 | GMC | K25 Suburban | High Sierra |
| 1975,1977-1978 | GMC | K25 Suburban | Sierra Classic |
| 1975,1977-1978 | GMC | K25 Suburban | Sierra Grande |
| 1977-1978 | GMC | K35 | Base |
| 1977-1978 | GMC | K35 | High Sierra |
| 1977-1978 | GMC | K35 | Sierra Classic |
| 1977-1978 | GMC | K35 | Sierra Grande |
| 1975 | GMC | P15 | Base |
| 1975 | GMC | P15 | Value Van |
| 1975,1977-1978 | GMC | P25 | Base |
| 1975,1977-1978 | GMC | P25 | Value Van |
| 1975,1977-1978 | GMC | P35 | Base |
| 1975,1977-1978 | GMC | P35 | Value Van |
| 1975-1977 | GMC | Sprint | Base |
| 1975-1977 | GMC | Sprint | Classic |
| 1975 | GMC | Sprint | High Sierra |
| 1976 | GMC | Sprint | Sierra Madre Del Sur |
| 1975-1976 | GMC | Sprint | SP |
| 1975 | Oldsmobile | Cutlass | Base |
| 1975 | Oldsmobile | Cutlass | S |
| 1975 | Oldsmobile | Cutlass Supreme | Base |
| 1975 | Oldsmobile | Omega | Base |
| 1975 | Oldsmobile | Omega | Salon |
| 1975 | Pontiac | Firebird | Base |
| 1975 | Pontiac | Firebird | Esprit |
| 1975 | Pontiac | Grand LeMans | Base |
| 1975 | Pontiac | LeMans | Base |
| 1975 | Pontiac | LeMans | Sport |
| 1975 | Pontiac | Ventura | Base |
| 1975 | Pontiac | Ventura | Custom |
| 1975 | Pontiac | Ventura | S |
| 1975 | Pontiac | Ventura | SJ |