NGK Iridium IX Spark Plug Box of 4 (XR4IX)
Regular price
$48.55
Regular price
-46%
$90.60
Sale price
$48.55
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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:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1954-1958 | Buick | Century | Base |
| 1959-1962 | Buick | Electra | 225 |
| 1959-1965 | Buick | Electra | Base |
| 1965,1967 | Buick | Gran Sport | Base |
| 1959-1963 | Buick | Invicta | Base |
| 1959-1965 | Buick | LeSabre | Base |
| 1965 | Buick | LeSabre | Custom |
| 1958 | Buick | Limited | Base |
| 1963-1965 | Buick | Riviera | Base |
| 1957 | Buick | Roadmaster | 75 |
| 1953-1958 | Buick | Roadmaster | Base |
| 1954,1965-1967 | Buick | Skylark | Base |
| 1951-1958,1962-1963,1965-1967 | Buick | Special | Base |
| 1963,1965-1967 | Buick | Special | Deluxe |
| 1965-1967 | Buick | Sportwagon | Base |
| 1966 | Buick | Sportwagon | Custom |
| 1951-1958 | Buick | Super | Base |
| 1963-1965 | Buick | Wildcat | Base |
| 1965 | Buick | Wildcat | Custom |
| 1965 | Buick | Wildcat | Deluxe |
| 1967 | Cadillac | Calais | Base |
| 1967 | Cadillac | DeVille | Base |
| 1967 | Cadillac | Eldorado | Base |
| 1967 | Cadillac | Fleetwood | 60 Special |
| 1967 | Cadillac | Fleetwood | 75 |
| 1967 | Cadillac | Fleetwood | Brougham |
| 1950-1952 | Cadillac | Series 60 Fleetwood | Base |
| 1950-1951 | Cadillac | Series 61 | Base |
| 1952 | Cadillac | Series 62 | Base |
| 1952 | Cadillac | Series 62 | DeVille |
| 1950-1952 | Cadillac | Series 75 Fleetwood | Base |
| 1950-1968 | Chevrolet | Bel Air | Base |
| 1955-1956 | Chevrolet | Bel Air | Beauville |
| 1955-1957 | Chevrolet | Bel Air | Nomad |
| 1958-1968 | Chevrolet | Biscayne | Base |
| 1960 | Chevrolet | Biscayne | Fleetmaster |
| 1967 | Chevrolet | Camaro | Base |
| 1967 | Chevrolet | Camaro | RS |
| 1966-1968 | Chevrolet | Caprice | Base |
| 1964-1968 | Chevrolet | Chevelle | 300 |
| 1965-1968 | Chevrolet | Chevelle | 300 Deluxe |
| 1967-1968 | Chevrolet | Chevelle | Concours |
| 1967-1968 | Chevrolet | Chevelle | Malibu |
| 1964-1965 | Chevrolet | Chevelle | Malibu Super Sport |
| 1968 | Chevrolet | Chevelle | Nomad |
| 1968 | Chevrolet | Chevelle | Nomad Custom |
| 1967-1968 | Chevrolet | Chevelle | SS 396 |
| 1966 | Chevrolet | Chevelle | Super Sport 396 |
| 1963-1967 | Chevrolet | Chevy II | Base |
| 1963-1968 | Chevrolet | Chevy II | Nova |
| 1967 | Chevrolet | Chevy II | Nova SS |
| 1968 | Chevrolet | El Camino | Custom |
| 1959-1967 | Chevrolet | Impala | Base |
| 1964,1966-1967 | Chevrolet | Impala | SS |
| 1970 | Chevrolet | Nova | Base |
| 1968-1969 | Chrysler | 300 | Base |
| 1975-1978 | Chrysler | Cordoba | Base |
| 1966-1967 | Chrysler | Imperial | Base |
| 1959-1970 | Chrysler | Imperial | Crown |
| 1959-1960,1962-1975 | Chrysler | Imperial | LeBaron |
| 1959-1972 | Chrysler | New Yorker | Base |
| 1972,1975-1978 | Chrysler | New Yorker | Brougham |
| 1959-1960,1962-1963,1966-1971,1973-1978 | Chrysler | Newport | Base |
| 1967-1976 | Chrysler | Newport | Custom |
| 1971-1972 | Chrysler | Newport | Royal |
| 1957-1960 | Chrysler | Saratoga | Base |
| 1957-1963,1967-1972,1975-1977 | Chrysler | Town & Country | Base |
| 1957-1961 | Chrysler | Windsor | Base |
| 1963-1964 | Dodge | 330 | Base |
| 1963-1964 | Dodge | 440 | Base |
| 1962-1965 | Dodge | 880 | Base |
| 1962-1965 | Dodge | 880 | Custom |
| 1971,1974 | Dodge | B200 Van | Base |
| 1974 | Dodge | B200 Van | Maxi |
| 1974 | Dodge | B200 Van | Maxi Wagon |
| 1971,1974 | Dodge | B200 Van | Sportsman |
| 1970-1971 | Dodge | Challenger | Base |
| 1970-1971 | Dodge | Challenger | R/T |
| 1969-1971 | Dodge | Charger | 500 |
| 1967-1974 | Dodge | Charger | Base |
| 1967-1971 | Dodge | Charger | R/T |
| 1969 | Dodge | Charger | SE |
| 1971-1976 | Dodge | Charger | Special Edition |
| 1971 | Dodge | Charger | Super Bee |
| 1965-1970 | Dodge | Coronet | 440 |
| 1965-1970 | Dodge | Coronet | 500 |
| 1953-1959,1965-1966,1970-1976 | Dodge | Coronet | Base |
| 1971,1975-1976 | Dodge | Coronet | Brougham |
| 1971-1976 | Dodge | Coronet | Crestwood |
| 1971-1975 | Dodge | Coronet | Custom |
| 1966-1970 | Dodge | Coronet | Deluxe |
| 1967-1970 | Dodge | Coronet | R/T |
| 1968-1970 | Dodge | Coronet | Super Bee |
| 1954-1961 | Dodge | Custom | Base |
| 1968-1974 | Dodge | D100 Pickup | Base |
| 1967 | Dodge | D100 Series | Base |
| 1968-1974 | Dodge | D200 Pickup | Base |
| 1967 | Dodge | D200 Series | Base |
| 1968-1974 | Dodge | D300 Pickup | Base |
| 1967 | Dodge | D300 Series | Base |
| 1967-1968 | Dodge | Monaco | 500 |
| 1965-1978 | Dodge | Monaco | Base |
| 1974,1977-1978 | Dodge | Monaco | Brougham |
| 1977-1978 | Dodge | Monaco | Crestwood |
| 1974 | Dodge | Monaco | Custom |
| 1975-1976 | Dodge | Monaco | Royal |
| 1975-1976 | Dodge | Monaco | Royal Brougham |
| 1963,1968-1969 | Dodge | Polara | 500 |
| 1960-1973 | Dodge | Polara | Base |
| 1971 | Dodge | Polara | Brougham |
| 1970-1973 | Dodge | Polara | Custom |
| 1970 | Dodge | Polara | Special |
| 1975-1977 | Dodge | Royal Monaco | Base |
| 1975-1977 | Dodge | Royal Monaco | Brougham |
| 1968-1971,1974 | Dodge | W100 Pickup | Base |
| 1967 | Dodge | W100 Series | Base |
| 1969-1971,1974 | Dodge | W200 Pickup | Base |
| 1967 | Dodge | W200 Series | Base |
| 1968-1969,1971 | Dodge | W300 Pickup | Base |
| 1967 | Dodge | W300 Series | Base |
| 1966 | Jeep | CJ3 | Base |
| 1966-1971 | Jeep | CJ5 | Base |
| 1966-1971 | Jeep | CJ6 | Base |
| 1966-1967 | Jeep | Commando | Base |
| 1966-1967 | Jeep | Dispatcher | Base |
| 1966-1970 | Jeep | DJ5 | Base |
| 1966-1968 | Jeep | DJ6 | Base |
| 1966 | Jeep | FC150 | Base |
| 1966 | Jeep | FC170 | Base |
| 1966-1970 | Jeep | Jeepster | Base |
| 1966-1971 | Jeep | Jeepster | Commando |
| 1966-1967 | Jeep | Universal | Base |
| 1970-1971 | Oldsmobile | 442 | Base |
| 1970-1974 | Oldsmobile | 98 | Base |
| 1973-1974 | Oldsmobile | 98 | Regency |
| 1971-1974 | Oldsmobile | Custom Cruiser | Base |
| 1968-1974 | Oldsmobile | Cutlass | Base |
| 1972 | Oldsmobile | Cutlass | Cruiser |
| 1968,1971-1974 | Oldsmobile | Cutlass | S |
| 1971-1974 | Oldsmobile | Cutlass Supreme | Base |
| 1974 | Oldsmobile | Cutlass Supreme | Cruiser |
| 1968 | Oldsmobile | Delmont 88 | Base |
| 1968-1974 | Oldsmobile | Delta 88 | Base |
| 1968-1971 | Oldsmobile | Delta 88 | Custom |
| 1969-1974 | Oldsmobile | Delta 88 | Royale |
| 1964-1972 | Oldsmobile | F85 | Base |
| 1964-1966 | Oldsmobile | F85 | Deluxe |
| 1966 | Oldsmobile | F85 | Holiday |
| 1973-1974 | Oldsmobile | Omega | Base |
| 1968-1974 | Oldsmobile | Toronado | Base |
| 1971-1974 | Oldsmobile | Toronado | Brougham |
| 1968-1970 | Oldsmobile | Toronado | Custom |
| 1968-1975 | Oldsmobile | Vista Cruiser | Base |
| 1964 | Plymouth | Barracuda | Base |
| 1955-1966 | Plymouth | Belvedere | Base |
| 1958-1961 | Plymouth | Custom | Base |
| 1960-1963 | Plymouth | Fleet Special | Base |
| 1956-1958,1960-1966 | Plymouth | Fury | Base |
| 1962-1966 | Plymouth | Fury | Sport |
| 1966 | Plymouth | Fury | VIP |
| 1955-1958 | Plymouth | Plaza | Base |
| 1965-1969 | Plymouth | Satellite | Base |
| 1968-1969 | Plymouth | Satellite | Sport |
| 1955-1958,1963-1964 | Plymouth | Savoy | Base |
| 1955-1958 | Plymouth | Suburban | Base |
| 1956-1957 | Plymouth | Suburban | Custom |
| 1956-1957 | Plymouth | Suburban | Deluxe |
| 1956-1958 | Plymouth | Suburban | Sport |
| 1959-1971 | Pontiac | Bonneville | Base |
| 1959-1962 | Pontiac | Bonneville | Custom |
| 1959-1970 | Pontiac | Bonneville | Safari |
| 1964-1967 | Pontiac | Catalina | 2+2 |
| 1959-1971 | Pontiac | Catalina | Base |
| 1971 | Pontiac | Catalina | Brougham |
| 1959-1971 | Pontiac | Catalina | Safari |
| 1962-1970 | Pontiac | Catalina | Ventura |
| 1967-1970 | Pontiac | Executive | Base |
| 1967-1970 | Pontiac | Executive | Safari |
| 1968-1969 | Pontiac | Firebird | 350 |
| 1969 | Pontiac | Firebird | 350 HO |
| 1967-1971 | Pontiac | Firebird | Base |
| 1970-1971 | Pontiac | Firebird | Esprit |
| 1970-1971 | Pontiac | Firebird | Formula |
| 1967-1968 | Pontiac | Firebird | HO |
| 1970-1971 | Pontiac | Firebird | Trans Am |
| 1962-1971 | Pontiac | Grand Prix | Base |
| 1971 | Pontiac | Grand Safari | Base |
| 1971 | Pontiac | Grandville | Base |
| 1964-1966,1970-1971 | Pontiac | GTO | Base |
| 1970-1971 | Pontiac | GTO | The Judge |
| 1963-1971 | Pontiac | LeMans | Base |
| 1969-1970 | Pontiac | LeMans | Safari |
| 1970-1971 | Pontiac | LeMans | Sport |
| 1971 | Pontiac | LeMans | T37 |
| 1959-1966 | Pontiac | Star Chief | Base |
| 1966 | Pontiac | Star Chief | Executive |
| 1961,1963-1968,1970 | Pontiac | Tempest | Base |
| 1964-1965,1967-1968 | Pontiac | Tempest | Custom |
| 1970 | Pontiac | Tempest | GT |
| 1961 | Pontiac | Tempest | LeMans |
