NGK Iridium IX Spark Plug Box of 4 (XR4IX)

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	Base
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
1967-1968	Chevrolet	Chevelle	300
1967-1968	Chevrolet	Chevelle	300 Deluxe
1964-1968	Chevrolet	Chevelle	Base
1967-1968	Chevrolet	Chevelle	Concours
1965-1967	Chevrolet	Chevelle	Deluxe
1968	Chevrolet	Chevelle	Malibu
1968	Chevrolet	Chevelle	Nomad
1964-1968	Chevrolet	Chevelle	SS
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
1953-1959,1965-1967,1970-1976	Dodge	Coronet	Base
1971,1975-1976	Dodge	Coronet	Brougham
1971-1976	Dodge	Coronet	Crestwood
1971-1975	Dodge	Coronet	Custom
1966,1968-1970	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
1961,1963-1968	Pontiac	Tempest	Safari