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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
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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

    1972-1973 DODGE CORONET

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

    1964-1965 PONTIAC LEMANS

    • CC: 3524
    • Liter: 3.5
    • SubModel: BASE
    • CUI: 215
    • EngineType: L6 ( 3.5 L / 215 )

    1976-1977 PLYMOUTH VOLARE

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

    1969 CHEVROLET BLAZER

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

    1970-1971 DODGE CHARGER

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

    1972-1974 PLYMOUTH ROAD RUNNER

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

    1969 DODGE CHARGER

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 426
    • EngineType: V8 ( 7.0 L / 426 )

    1989-1992 DODGE D250 PICKUP

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

    1969 PLYMOUTH BELVEDERE

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

    1972 DODGE DART

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

    1975 PLYMOUTH SCAMP

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

    1969 PLYMOUTH VALIANT

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

    1964 GMC G1000 SERIES VAN

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

    1971-1972 DODGE P300 VAN

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

    1965-1966 DODGE P200 VAN

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

    1984 PLYMOUTH HORIZON

    • Liter: 2.2
    • Aspiration: N
    • SubModel: TURISMO
    • Engine Vin: C
    • CUI: 135
    • EngineType: L4 ( 2.2 L / 135 )

    1974 PLYMOUTH SATELLITE

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

    1974 CHRYSLER NEWPORT

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

    1974 JEEP CHEROKEE (SJ)

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

    1992-1995 DODGE DAKOTA

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

    1968 CHEVROLET C30 PICKUP

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

    1968 DODGE DART

    • CC: 5212
    • Liter: 5.2
    • SubModel: 270
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1980-1981 PLYMOUTH CARAVELLE

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

    1971 DODGE DART

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

    1975 PLYMOUTH ROAD RUNNER

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

    1977-1980 ROLLS-ROYCE SILVER WRAITH II

    • EngineType: ALL
    • SubModel: ALL

    1980-1981 JEEP CJ7

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

    1972 AMERICAN MOTORS JAVELIN

    • EngineType: ALL
    • SubModel: SST

    1975-1976 DODGE CORONET

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

    1994 CHRYSLER LEBARON

    • EngineType: ALL
    • SubModel: BASE

    1978 DODGE D400

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

    1976 DODGE D100 PICKUP

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

    1971 AMERICAN MOTORS HORNET

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

    1978-1985 PLYMOUTH CARAVELLE

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

    1978-1979 JEEP CJ7

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

    1964-1966 CHEVROLET CHEVY II

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

    1988-1989 DODGE CARAVAN

    • EngineType: ALL
    • SubModel: BASE

    1983-1985 CHRYSLER LEBARON

    • CC: 2213
    • Liter: 2.2
    • SubModel: BASE
    • CUI: 135
    • EngineType: L4 ( 2.2 L / 135 )

    1973 JEEP J-2600

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

    1967 DODGE CHARGER

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

    1976 DODGE CHARGER

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

    1967-1968 CHEVROLET CHEVY II

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

    1972-1980 DODGE B100 VAN

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

    1971 INTERNATIONAL M800 POST OFFICE

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

    1968 CHECKER MARATHON

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

    1969 DODGE DART

    • Liter: 2.8
    • SubModel: SWINGER
    • CUI: 170
    • EngineType: L6 ( 2.8 L / 170 )

    1971 DODGE CHARGER

    • CC: 6981
    • Liter: 7.0
    • SubModel: SUPER BEE
    • CUI: 426
    • EngineType: V8 ( 7.0 L / 426 )

    1971-1973 PLYMOUTH ROAD RUNNER

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

    1976-1978 DODGE B100 VAN

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

    1968 PLYMOUTH BELVEDERE

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

    1955-1958 CHRYSLER 300

    • EngineType: ALL
    • SubModel: ALL

    1985 CHRYSLER LEBARON

    • EngineType: ALL
    • SubModel: GTS

    1971 DODGE CORONET

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

    1978-1980 JEEP CHEROKEE (SJ)

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

    1971 DODGE DART

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

    1970 PLYMOUTH BARRACUDA

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

    1972-1978 DODGE B200 VAN

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

    1978-1981 CHRYSLER TOWN & COUNTRY

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

    1979 DODGE D100 PICKUP

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

    1975-1978 PLYMOUTH FURY

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

    1983-1985 OLDSMOBILE FIRENZA

    • Liter: 1.8
    • SubModel: CRUISER SX
    • CUI: 112
    • EngineType: L4 ( 1.8 L / 112 )

    1975 PLYMOUTH SCAMP

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

    1972 DODGE CORONET

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

    1969-1970 INTERNATIONAL SCOUT

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

    1968 CHEVROLET C20 SUBURBAN

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

    1978 AMERICAN MOTORS MATADOR

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

    1978-1987 JEEP J10

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

    1968 PLYMOUTH ROAD RUNNER

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

    1992 DODGE RAMCHARGER

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

    1956 CHRYSLER NEWPORT

    • CC: 5802
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 354
    • EngineType: V8 ( 5.8 L / 354 )

    1955-1956 CHRYSLER WINDSOR

    • EngineType: ALL
    • SubModel: ALL

    1984 PLYMOUTH HORIZON

    • EngineType: ALL
    • SubModel: SE

    1963 CHEVROLET IMPALA

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

    1974 PLYMOUTH PB200 VAN

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

    1984-1987 DODGE D250 PICKUP

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

    1968-1969 CHEVROLET EL CAMINO

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

    1968 PLYMOUTH BARRACUDA

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

    1978 DODGE MAGNUM

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

    1969 CHEVROLET CHEVELLE

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

    1971 PLYMOUTH FURY

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

    1985 CHRYSLER LEBARON

    • EngineType: ALL
    • SubModel: TURBO

    1964 CHEVROLET CHEVELLE

    • CC: 3180
    • Liter: 3.2
    • SubModel: SS
    • CUI: 194
    • EngineType: L6 ( 3.2 L / 194 )

    1964-1965 DODGE DART

    • Liter: 2.8
    • SubModel: 270
    • CUI: 170
    • EngineType: L6 ( 2.8 L / 170 )

    1982 CHRYSLER LEBARON

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

    1972-1974 DODGE B300 VAN

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

    1968 CHEVROLET CHEVELLE

    • CC: 3769
    • Liter: 3.8
    • SubModel: 300
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1974 DODGE DART

    • EngineType: ALL
    • SubModel: SPECIAL

    1970 DODGE CORONET

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

    1968 DODGE D200 PICKUP

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

    1971 DODGE POLARA

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

    1965-1969 CHEVROLET IMPALA

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

    1963 DODGE DART

    • EngineType: ALL
    • SubModel: GT

    1987 DODGE CHARGER

    • EngineType: ALL
    • SubModel: ALL

    1991 PLYMOUTH SUNDANCE

    • EngineType: ALL
    • SubModel: RS

    1980 CHRYSLER CORDOBA

    • Liter: 5.2
    • SubModel: 300
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )

    1969 AMERICAN MOTORS RAMBLER

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

    1971 DODGE DART

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

    1984-1989 CHRYSLER FIFTH AVENUE

    • EngineType: ALL
    • SubModel: ALL

    1964-1965 GMC PB1000 SERIES VAN

    • Liter: 2.5
    • SubModel: BASE
    • CUI: 153
    • EngineType: L4 ( 2.5 L / 153 )

    1970 PLYMOUTH FURY

    • CC: 5212
    • Liter: 5.2
    • SubModel: S-23
    • CUI: 318
    • EngineType: V8 ( 5.2 L / 318 )
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