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NGK Spark Plugs GR4IX

Iridium IX Spark Plug 14mm x 3/4" Reach

NGK Spark Plugs GR4IX

739-GR4IX

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$5.99
$5.32
ON SALE - $0.67 OFF
NGK Spark Plugs GR4IX Iridium IX Spark Plug 14mm x 3/4" Reach $5.32
Iridium IX Spark Plug
  • 14mm x 3/4" Reach
  • 13/16" Hex
  • Projected
  • Gasket seat
  • Sold Individually

  • Specifications:

    Manufacturer's Part Number:
    GR4IX

    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 NGK Spark Plugs GR4IX fit your vehicle?

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    Aspiration

    1975-1979 DODGE CB300 VAN

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1975-1976 DODGE CORONET

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1968-1969 CHEVROLET CHEVELLE

    • CC: 3769
    • Liter: 3.8
    • SubModel: MALIBU
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1970 BENTLEY T1 SERIES

    • CC: 6230
    • Liter: 6.2
    • SubModel: H.J. MULLINER
    • EngineType: V8 ( 6.2 L / 6230 CC )

    1969 CHEVROLET K20 SUBURBAN

    • CC: 4097
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1969 GMC G15/G1500 VAN

    • Liter: 4.1
    • SubModel: VANDURA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1970-1974 PLYMOUTH VALIANT

    • CC: 3254
    • Liter: 3.2
    • SubModel: BASE
    • CUI: 198
    • EngineType: L6 ( 3.2 L / 198 )

    1983 DODGE B350 VAN

    • EngineType: ALL
    • SubModel: ALL

    1967-1968 CHEVROLET CHEVY II

    • CC: 4098
    • Liter: 4.1
    • SubModel: NOVA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968 AMERICAN MOTORS AMBASSADOR

    • CC: 6391
    • Liter: 6.4
    • SubModel: DPL
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1984-1987 DODGE D250 PICKUP

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1970-1971 PLYMOUTH BARRACUDA

    • CC: 3254
    • Liter: 3.2
    • SubModel: GRAN COUPE
    • CUI: 198
    • EngineType: L6 ( 3.2 L / 198 )

    1982 OLDSMOBILE FIRENZA

    • EngineType: ALL
    • SubModel: LX

    1971 DODGE POLARA

    • CC: 3687
    • Liter: 3.7
    • SubModel: BROUGHAM
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1979 AMERICAN MOTORS SPIRIT

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 304
    • EngineType: V8 ( 5.0 L / 304 )

    1984-1989 DODGE DAYTONA

    • EngineType: ALL
    • SubModel: ALL

    1972 DODGE CORONET

    • CC: 5572
    • Liter: 5.6
    • SubModel: BASE
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1991-1992 DODGE DAYTONA

    • CC: 2507
    • Liter: 2.5
    • SubModel: IROC
    • CUI: 153
    • EngineType: L4 ( 2.5 L / 153 )

    1955 CHRYSLER TOWN & COUNTRY

    • CC: 4933
    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1974 PLYMOUTH PB300 VAN

    • CC: 5212
    • Liter: 5.2
    • SubModel: VOYAGER EX WAGON
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1974 PLYMOUTH GRAN FURY

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1966 CHEVROLET SUBURBAN

    • CC: 4098
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1985-1987 DODGE MINI RAM

    • Liter: 2.2
    • SubModel: ROYAL
    • CUI: 135
    • EngineType: L4 ( 2.2 L / 135 )

    1968 PLYMOUTH VALIANT

    • CC: 5212
    • Liter: 5.2
    • SubModel: SIGNET
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1978-1981 JEEP CJ7

    • Liter: 5.0
    • SubModel: RENEGADE
    • CUI: 304
    • EngineType: V8 ( 5.0 L / 304 )

    1972-1973 DODGE B100 VAN

    • CC: 3687
    • Liter: 3.7
    • SubModel: BASE
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1977-1980 BENTLEY T2 SERIES

    • EngineType: ALL
    • SubModel: ALL

    1981-1987 DODGE D350 PICKUP

    • Liter: 5.9
    • SubModel: RD
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1968 PLYMOUTH VALIANT

    • CC: 4473
    • Liter: 4.5
    • SubModel: SIGNET
    • CUI: 273
    • EngineType: V8 ( 4.5 L / 273 )

    1981-1985 DODGE ARIES

    • Liter: 2.2
    • SubModel: BASE
    • CUI: 135
    • EngineType: L4 ( 2.2 L / 135 )

    1971 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1979-1980 PLYMOUTH PB300 VAN

    • EngineType: ALL
    • SubModel: VOYAGER

    1965-1967 CHEVROLET IMPALA

    • CC: 4097
    • Liter: 4.1
    • SubModel: SS
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1990-1991 DODGE DAYTONA

    • EngineType: ALL
    • SubModel: SHELBY

    1971-1976 BENTLEY T1 SERIES

    • EngineType: ALL
    • SubModel: ALL

    1964-1965 CHEVROLET K20 PICKUP

    • CC: 3769
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1962 DODGE DART

    • CC: 3687
    • Liter: 3.7
    • SubModel: 440
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1976 DODGE DART

    • Liter: 5.9
    • SubModel: SWINGER
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1974 PLYMOUTH PB300 VAN

    • Liter: 5.2
    • SubModel: VOYAGER
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1978-1980 JEEP CJ5

    • Liter: 5.0
    • SubModel: GOLDEN EAGLE
    • CUI: 304
    • EngineType: V8 ( 5.0 L / 304 )

    1955-1956 CHRYSLER WINDSOR

    • EngineType: ALL
    • SubModel: ALL

    1977-1980 ROLLS-ROYCE SILVER SHADOW II

    • EngineType: ALL
    • SubModel: ALL

    1974 DODGE DART

    • EngineType: ALL
    • SubModel: SPORT 360

    1975-1978 DODGE MONACO

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1964 DODGE DART

    • Liter: 4.5
    • SubModel: GTS
    • CUI: 273
    • EngineType: V8 ( 4.5 L / 273 )

    1980 PLYMOUTH GRAN FURY

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1969 DODGE DART

    • CC: 5572
    • Liter: 5.6
    • SubModel: GT
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1967-1969 CHEVROLET CAMARO

    • CC: 3769
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1974 JEEP CHEROKEE (SJ)

    • Liter: 6.6
    • SubModel: S
    • CUI: 401
    • EngineType: V8 ( 6.6 L / 401 )

    1984-1987 DODGE W100 PICKUP

    • CC: 5211
    • Liter: 5.2
    • SubModel: CUSTOM
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1973 PLYMOUTH BARRACUDA

    • CC: 5572
    • Liter: 5.6
    • SubModel: BASE
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1968 DODGE CORONET

    • CC: 5212
    • Liter: 5.2
    • SubModel: 500
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975 PLYMOUTH ROAD RUNNER

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1980 PLYMOUTH PB200 VAN

    • Liter: 5.9
    • SubModel: VOYAGER
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1960-1961 DODGE DART

    • CC: 3687
    • Liter: 3.7
    • SubModel: PIONEER
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1967 PONTIAC LEMANS

    • CC: 3769
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1979-1983 DODGE DIPLOMAT

    • Liter: 5.2
    • SubModel: SALON
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1975-1976 DODGE DART

    • Liter: 5.2
    • SubModel: SWINGER
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968 DODGE DART

    • CC: 5572
    • Liter: 5.6
    • SubModel: BASE
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1969-1971 PLYMOUTH FURY

    • CC: 5212
    • Liter: 5.2
    • SubModel: SPORT
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1973 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: SPECIAL
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1984-1990 DODGE D150 PICKUP

    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1974-1978 PLYMOUTH PB200 VAN

    • Liter: 5.2
    • SubModel: VOYAGER
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1967 CHEVROLET CHEVELLE

    • CC: 4097
    • Liter: 4.1
    • SubModel: DELUXE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1969 AMERICAN MOTORS AMBASSADOR

    • CC: 6391
    • Liter: 6.4
    • SubModel: SST
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1971 DODGE DART

    • CC: 3254
    • Liter: 3.2
    • SubModel: DEMON
    • CUI: 198
    • EngineType: L6 ( 3.2 L / 198 )

    1968-1969 CHEVROLET G20 VAN

    • CC: 3769
    • Liter: 3.8
    • SubModel: SPORTVAN
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1988-1991 PLYMOUTH VOYAGER

    • CC: 2507
    • Liter: 2.5
    • SubModel: LE
    • CUI: 153
    • EngineType: L4 ( 2.5 L / 153 )

    1969-1970 DODGE MONACO

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1969-1971 JEEP J-100

    • Liter: 3.8
    • SubModel: BASE
    • CUI: 232
    • EngineType: L6 ( 3.8 L / 232 )

    1971 DODGE DART

    • CC: 3254
    • Liter: 3.2
    • SubModel: BASE
    • CUI: 198
    • EngineType: L6 ( 3.2 L / 198 )

    1965 AMERICAN MOTORS CLASSIC

    • CC: 3261
    • Liter: 3.3
    • SubModel: BASE
    • CUI: 199
    • EngineType: L6 ( 3.3 L / 199 )

    1974 PLYMOUTH PB100 VAN

    • Liter: 5.9
    • SubModel: VOYAGER
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1971 AMERICAN MOTORS HORNET

    • CC: 4983
    • Liter: 5.0
    • SubModel: SPORTABOUT
    • CUI: 304
    • EngineType: V8 ( 5.0 L / 304 )

    1985 CHRYSLER LEBARON

    • EngineType: ALL
    • SubModel: TURBO

    1969-1970 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1979 DODGE D100 PICKUP

    • CC: 5211
    • Liter: 5.2
    • SubModel: WARLOCK II
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1972-1973 DODGE POLARA

    • CC: 5900
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1970 DODGE POLARA

    • CC: 3687
    • Liter: 3.7
    • SubModel: BASE
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1975-1976 DODGE W300 PICKUP

    • CC: 5211
    • Liter: 5.2
    • SubModel: CUSTOM
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968 DODGE DART

    • CC: 2786
    • Liter: 2.8
    • SubModel: GT
    • CUI: 170
    • EngineType: L6 ( 2.8 L / 170 )

    1969 PLYMOUTH BARRACUDA

    • CC: 5572
    • Liter: 5.6
    • SubModel: BASE
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1977-1978 DODGE MONACO

    • Liter: 5.9
    • SubModel: CRESTWOOD
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1973 PLYMOUTH FURY

    • CC: 5212
    • Liter: 5.2
    • SubModel: SPORT SUBURBAN
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1964-1968 PLYMOUTH BELVEDERE

    • CC: 4473
    • Liter: 4.5
    • SubModel: BASE
    • CUI: 273
    • EngineType: V8 ( 4.5 L / 273 )

    1956-1958 CHRYSLER NEW YORKER

    • EngineType: ALL
    • SubModel: ALL

    1967 AMERICAN MOTORS REBEL

    • CC: 3802
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 232
    • EngineType: L6 ( 3.8 L / 232 )

    1968-1969 CHEVROLET P10 VAN

    • EngineType: ALL
    • SubModel: ALL

    1969-1971 DODGE CHARGER

    • CC: 6981
    • Liter: 7.0
    • SubModel: R/T
    • CUI: 426
    • EngineType: V8 ( 7.0 L / 426 )

    1969 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: GT
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1973 PLYMOUTH FURY I

    • CC: 3687
    • Liter: 3.7
    • SubModel: BASE
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1991 PONTIAC SUNBIRD

    • EngineType: ALL
    • SubModel: VALUE LEADER

    1961 DODGE LANCER

    • CC: 3687
    • Liter: 3.7
    • SubModel: BASE
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1975-1979 DODGE CB300 VAN

    • Liter: 5.2
    • SubModel: BASE
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1968-1969 AMERICAN MOTORS JAVELIN

    • CC: 5585
    • Liter: 5.6
    • SubModel: BASE
    • CUI: 343
    • EngineType: V8 ( 5.6 L / 343 )

    1971 DODGE W300 PICKUP

    • CC: 5899
    • Liter: 5.9
    • SubModel: BASE
    • CUI: 360
    • EngineType: V8 ( 5.9 L / 360 )

    1968-1969 AMERICAN MOTORS AMBASSADOR

    • CC: 6391
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )

    1968 PLYMOUTH FURY I

    • CC: 3687
    • Liter: 3.7
    • SubModel: BASE
    • CUI: 225
    • EngineType: L6 ( 3.7 L / 225 )

    1969 AMERICAN MOTORS AMBASSADOR

    • CC: 6391
    • Liter: 6.4
    • SubModel: DPL
    • CUI: 390
    • EngineType: V8 ( 6.4 L / 390 )
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