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NGK Spark Plugs XR4IX - NGK Iridium IX Spark Plugs



NGK Spark Plugs XR4IX - NGK Iridium IX Spark Plugs

Part Number: 739-XR4IX

Iridium IX Spark Plug
  • 14mm x 3/8" Reach
  • 13/16" Hex
  • Projected
  • Gasket seat
  • Sold Individually
  • $7.10
    Ships

    Specifications:

    Manufacturer's Part Number:
    XR4IX

    The Plug for Serious Enthusiasts
    Iridium has a very high melting point that's perfect for high-performance, high-tech engines. It is stronger than any other metal used in spark plugs.

  • Ultra-fine electrode (thin enough for spark consistency & accuracy, thick enough for max durability & longevity)
  • Reduces spark voltage requirement
  • Fuel efficiency & extreme ignitability
  • Improved throttle response
  • Outstanding acceleration
  • Superior antifouling, anticorrosion, and antiseizing properties
  • Quality NGK Spark Plugs
  • Sold individually

  • Does this fit your vehicle?

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    1959 CHEVROLET BISCAYNE

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8

    1957 PLYMOUTH SAVOY

    • CC: 4540
    • Liter: 4.5
    • SubModel: BASE
    • CUI: 277
    • EngineType: V8

    1963-1966 PONTIAC GRAND PRIX

    • CC: 6900
    • Liter: 6.9
    • SubModel: BASE
    • CUI: 421
    • EngineType: V8

    1968 CHEVROLET CHEVELLE

    • Liter: 5.4
    • EngineType: V8
    • SubModel: 300 DELUXE

    1968 DODGE CORONET

    • Liter: 6.3
    • SubModel: 440
    • CUI: 383
    • EngineType: V8

    1965-1966 PLYMOUTH SATELLITE

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8

    1975-1976 DODGE CORONET

    • Liter: 6.6
    • SubModel: BROUGHAM
    • CUI: 400
    • EngineType: V8

    1959-1960 CHRYSLER NEWPORT

    • EngineType: ALL
    • SubModel: ALL

    1959-1967 CHEVROLET BISCAYNE

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8

    1971 PONTIAC CATALINA

    • EngineType: ALL
    • SubModel: BROUGHAM

    1967 CADILLAC DEVILLE

    • EngineType: ALL
    • SubModel: ALL

    1971 DODGE CHARGER

    • Liter: 6.3
    • EngineType: V8
    • SubModel: SPECIAL EDITION

    1968 CHEVROLET CAPRICE

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8

    1972 CHRYSLER NEW YORKER

    • Liter: 7.2
    • EngineType: V8
    • SubModel: BROUGHAM

    1967 DODGE CORONET

    • Liter: 5.2
    • EngineType: V8
    • SubModel: R/T

    1967 CADILLAC ELDORADO

    • EngineType: ALL
    • SubModel: ALL

    1976 DODGE CHARGER

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1967 CHEVROLET CAMARO

    • Liter: 5.3
    • EngineType: V8
    • SubModel: BASE

    1964-1965 BUICK WILDCAT

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970 PONTIAC EXECUTIVE

    • Liter: 7.5
    • EngineType: V8
    • SubModel: SAFARI

    1967 DODGE POLARA

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8

    1972-1974 OLDSMOBILE CUTLASS SUPREME

    • EngineType: V8
    • SubModel: BASE

    1970 PONTIAC CATALINA

    • EngineType: ALL
    • SubModel: ALL

    1968 DODGE CORONET

    • CC: 6286
    • Liter: 6.3
    • SubModel: SUPER BEE
    • CUI: 383
    • EngineType: V8

    1971-1974 DODGE D300 PICKUP

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1971 OLDSMOBILE DELTA 88

    • EngineType: ALL
    • SubModel: CUSTOM

    1963-1964 DODGE 330

    • CC: 6981
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 426
    • EngineType: V8

    1972-1974 DODGE CHARGER

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1967-1968 DODGE MONACO

    • CC: 6286
    • Liter: 6.3
    • SubModel: BASE
    • CUI: 383
    • EngineType: V8

    1966 DODGE CORONET

    • Liter: 5.2
    • EngineType: V8
    • SubModel: DELUXE

    1965 BUICK GRAN SPORT

    • CC: 6572
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1969-1971 DODGE CHARGER

    • Liter: 6.3
    • EngineType: V8
    • SubModel: BASE

    1956-1957 PLYMOUTH SUBURBAN

    • CC: 4540
    • Liter: 4.5
    • SubModel: BASE
    • CUI: 277
    • EngineType: V8

    1961-1963 CHRYSLER TOWN & COUNTRY

    • Liter: 6.8
    • EngineType: V8
    • SubModel: BASE

    1966 PLYMOUTH SATELLITE

    • CC: 7211
    • Liter: 7.2
    • SubModel: BASE
    • CUI: 440
    • EngineType: V8

    1971 PONTIAC CATALINA

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1963-1965 DODGE POLARA

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8

    1964 PLYMOUTH SAVOY

    • Liter: 6.3
    • SubModel: BASE
    • CUI: 383
    • EngineType: V8

    1965-1967 CHEVROLET CHEVELLE

    • Liter: 4.6
    • EngineType: V8
    • SubModel: SS

    1972-1974 DODGE CORONET

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CRESTWOOD

    1958 PLYMOUTH CUSTOM

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1966 CHEVROLET CHEVELLE

    • Liter: 5.3
    • EngineType: V8
    • SubModel: SS

    1965-1967 DODGE CORONET

    • Liter: 5.2
    • EngineType: V8
    • SubModel: 500

    1975-1976 DODGE CORONET

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1971 PONTIAC LEMANS

    • Liter: 6.6
    • EngineType: V8
    • SubModel: T37

    1968 PLYMOUTH SATELLITE

    • Liter: 6.3
    • SubModel: BASE
    • CUI: 383
    • EngineType: V8

    1956 PLYMOUTH SAVOY

    • Liter: 4.4
    • EngineType: V8
    • SubModel: BASE

    1957-1959 DODGE CORONET

    • EngineType: V8
    • SubModel: BASE

    1955 BUICK SPECIAL

    • CC: 4343
    • Liter: 4.3
    • SubModel: BASE
    • EngineType: V8

    1959-1963 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL

    1963-1964 CHEVROLET CHEVY II

    • EngineType: V8
    • SubModel: NOVA

    1963-1965 PLYMOUTH BELVEDERE

    • Liter: 6.3
    • SubModel: BASE
    • CUI: 383
    • EngineType: V8

    1968-1971 OLDSMOBILE DELTA 88

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1965 BUICK SPORTWAGON

    • EngineType: V8
    • SubModel: BASE

    1969 DODGE MONACO

    • Liter: 7.2
    • EngineType: V8
    • SubModel: BASE

    1968-1971 CHRYSLER NEWPORT

    • Liter: 7.2
    • SubModel: CUSTOM
    • CUI: 440
    • EngineType: V8

    1959-1966 PONTIAC BONNEVILLE

    • EngineType: ALL
    • SubModel: ALL

    1963 PLYMOUTH FLEET SPECIAL

    • Liter: 7.0
    • EngineType: V8
    • SubModel: BASE

    1963 BUICK SPECIAL

    • CC: 3245
    • Liter: 3.2
    • SubModel: BASE
    • CUI: 198
    • EngineType: V6

    1971 PONTIAC LEMANS

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970 DODGE POLARA

    • Liter: 6.3
    • EngineType: V8
    • SubModel: SPECIAL

    1962-1969 CHEVROLET BISCAYNE

    • Liter: 5.4
    • EngineType: V8
    • SubModel: BASE

    1975 CHRYSLER IMPERIAL

    • Liter: 7.2
    • SubModel: LEBARON
    • CUI: 440
    • EngineType: V8

    1968 OLDSMOBILE DELMONT 88

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1968-1969 CHEVROLET CAMARO

    • Liter: 5.4
    • EngineType: V8
    • SubModel: BASE

    1968-1971 CHRYSLER NEWPORT

    • CC: 7211
    • Liter: 7.2
    • SubModel: CUSTOM
    • CUI: 440
    • EngineType: V8

    1961-1962 CHEVROLET IMPALA

    • Liter: 3.8
    • SubModel: BASE
    • CUI: 235
    • EngineType: L6

    1968-1970 OLDSMOBILE DELTA 88

    • Liter: 7.5
    • EngineType: V8
    • SubModel: CUSTOM

    1974 OLDSMOBILE 98

    • Liter: 7.5
    • EngineType: V8
    • SubModel: REGENCY

    1966 PLYMOUTH FURY

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 361
    • EngineType: V8

    1965-1966 DODGE MONACO

    • Liter: 6.3
    • EngineType: V8
    • SubModel: BASE

    1968 DODGE POLARA

    • CC: 6286
    • Liter: 6.3
    • SubModel: 500
    • CUI: 383
    • EngineType: V8

    1967-1969 PONTIAC BONNEVILLE

    • Liter: 7.0
    • EngineType: V8
    • SubModel: BASE

    1961 CHRYSLER TOWN & COUNTRY

    • Liter: 6.3
    • EngineType: V8
    • SubModel: BASE

    1968 PONTIAC TEMPEST

    • Liter: 5.7
    • EngineType: V8
    • SubModel: CUSTOM

    1970 CHEVROLET NOVA

    • Liter: 5.7
    • EngineType: V8
    • SubModel: BASE

    1957 PLYMOUTH BELVEDERE

    • CC: 4540
    • Liter: 4.5
    • SubModel: BASE
    • CUI: 277
    • EngineType: V8

    1971 PONTIAC LEMANS

    • Liter: 5.7
    • EngineType: V8
    • SubModel: T37

    1974 DODGE B200 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: MAXI

    1966 DODGE POLARA

    • Liter: 7.2
    • EngineType: V8
    • SubModel: BASE

    1975-1976 DODGE MONACO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: ROYAL

    1975-1976 DODGE CHARGER

    • Liter: 6.6
    • SubModel: SPECIAL EDITION
    • CUI: 400
    • EngineType: V8

    1971 DODGE CORONET

    • Liter: 6.3
    • EngineType: V8
    • SubModel: CRESTWOOD

    1968 CHEVROLET CHEVELLE

    • Liter: 5.4
    • EngineType: V8
    • SubModel: 300

    1966-1967 BUICK SKYLARK

    • Liter: 5.6
    • EngineType: V8
    • SubModel: BASE

    1969 DODGE POLARA

    • Liter: 7.2
    • EngineType: V8
    • SubModel: 500

    1967 DODGE CORONET

    • Liter: 6.3
    • SubModel: BASE
    • CUI: 383
    • EngineType: V8

    1968 DODGE CORONET

    • Liter: 6.3
    • SubModel: DELUXE
    • CUI: 383
    • EngineType: V8

    1967-1969 PONTIAC EXECUTIVE

    • Liter: 7.0
    • EngineType: V8
    • SubModel: SAFARI

    1964 PLYMOUTH BARRACUDA

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 361
    • EngineType: V8

    1974 OLDSMOBILE CUTLASS SUPREME

    • EngineType: V8
    • SubModel: CRUISER

    1968 CHEVROLET IMPALA

    • Liter: 5.4
    • EngineType: V8
    • SubModel: BASE

    1968 PLYMOUTH SATELLITE

    • Liter: 6.3
    • EngineType: V8
    • SubModel: SPORT

    1963-1964 DODGE 330

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8

    1970-1971 PONTIAC GTO

    • Liter: 7.5
    • EngineType: V8
    • SubModel: BASE

    1970 DODGE POLARA

    • Liter: 7.2
    • EngineType: V8
    • SubModel: SPECIAL

    1968 CHEVROLET EL CAMINO

    • Liter: 5.0
    • SubModel: CUSTOM
    • CUI: 307
    • EngineType: V8

    1968 CHEVROLET CHEVELLE

    • Liter: 5.0
    • EngineType: V8
    • SubModel: MALIBU

    1968-1971 CHRYSLER NEWPORT

    • Liter: 6.3
    • SubModel: BASE
    • CUI: 383
    • EngineType: V8

    1957-1961 CHRYSLER WINDSOR

    • EngineType: ALL
    • SubModel: ALL
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