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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

    1967 PONTIAC TEMPEST

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

    1966 DODGE POLARA

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

    1975-1977 DODGE ROYAL MONACO

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

    1971 PLYMOUTH SCAMP

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

    1988 DODGE DYNASTY

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

    1968-1969 AMERICAN MOTORS JAVELIN

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

    1970-1971 PLYMOUTH GTX

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

    1974 DODGE CHALLENGER

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

    1970 DODGE DART

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

    1969-1970 DODGE DART

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

    1964-1967 CHEVROLET EL CAMINO

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

    1974 PLYMOUTH SATELLITE

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

    1979 DODGE D100 PICKUP

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

    1966-1967 AMERICAN MOTORS AMBASSADOR

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

    1989 DODGE SPIRIT

    • EngineType: ALL
    • SubModel: BASE

    1968 AMERICAN MOTORS AMERICAN

    • CC: 4753
    • Liter: 4.7
    • SubModel: ROGUE
    • CUI: 290
    • EngineType: V8 ( 4.7 L / 290 )

    1982 DODGE OMNI

    • EngineType: ALL
    • SubModel: E-TYPE

    1986-1989 CHRYSLER LEBARON

    • EngineType: ALL
    • SubModel: ALL

    1971 DODGE B200 VAN

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

    1972-1978 DODGE B200 VAN

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

    1959-1961 CHEVROLET BISCAYNE

    • CC: 5704
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 348
    • EngineType: V8 ( 5.7 L / 348 )

    1971 PLYMOUTH SCAMP

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

    1975-1979 DODGE D300 PICKUP

    • EngineType: ALL
    • SubModel: RD

    1972 PLYMOUTH SATELLITE

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

    1970 DODGE CHALLENGER

    • EngineType: ALL
    • SubModel: T/A

    1970-1971 PLYMOUTH BARRACUDA

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

    1968-1969 CHEVROLET P10 VAN

    • EngineType: ALL
    • SubModel: ALL

    1968-1969 AMERICAN MOTORS AMBASSADOR

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

    1968-1969 GMC G25/G2500 VAN

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

    1975-1976 DODGE W300 PICKUP

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

    1967 GMC K15/K1500 PICKUP

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

    1971 AMERICAN MOTORS HORNET

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

    1990-1991 DODGE B150 VAN

    • CC: 3906
    • Liter: 3.9
    • SubModel: BASE
    • CUI: 239
    • EngineType: V6 ( 3.9 L / 239 )

    1988-1991 DODGE W150 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1968 AMERICAN MOTORS REBEL

    • CC: 3802
    • Liter: 3.8
    • SubModel: 550
    • CUI: 232
    • EngineType: L6 ( 3.8 L / 232 )

    1989-1993 DODGE SPIRIT

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

    1968-1969 BUICK SKYLARK

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

    1985 PLYMOUTH RELIANT

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

    1972-1973 DODGE POLARA

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

    1974 PLYMOUTH FURY

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

    1962-1968 CHEVROLET CHEVY II

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

    1969 CHEVROLET G10 VAN

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

    1965-1966 JEEP GLADIATOR

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

    1965 DODGE CORONET

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

    1964-1967 PLYMOUTH BARRACUDA

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

    1967 GMC C35/C3500 PICKUP

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

    1971-1974 PLYMOUTH SATELLITE

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

    1974 CADILLAC FLEETWOOD

    • CC: 7735
    • Liter: 7.7
    • SubModel: 60 SPECIAL BROUGHAM
    • CUI: 472
    • EngineType: V8 ( 7.7 L / 472 )

    1978 JEEP CHEROKEE (SJ)

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

    1988-1989 PLYMOUTH VOYAGER

    • EngineType: ALL
    • SubModel: BASE

    1972 PLYMOUTH FURY

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

    1966 GMC PB15 SERIES VAN

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

    1967 DODGE W200 PICKUP

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

    1975-1977 DODGE CHARGER

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

    1971-1973 DODGE DART

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

    1969 CHEVROLET G10 VAN

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

    1976 PLYMOUTH VALIANT

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

    1970-1973 DODGE CHALLENGER

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

    1964-1965 PONTIAC TEMPEST

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

    1971 DODGE W200 PICKUP

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

    1971 DODGE DART

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

    1975 PLYMOUTH GRAN FURY

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

    1968 CHEVROLET CHEVY II

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

    1968-1969 CHEVROLET EL CAMINO

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

    1979 AMERICAN MOTORS CONCORD

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

    1968 DODGE CORONET

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

    1973 JEEP WAGONEER

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

    1972 DODGE B100 VAN

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

    1972-1980 DODGE B200 VAN

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

    1971 DODGE POLARA

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

    1969 PLYMOUTH VALIANT

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

    1978-1981 CHRYSLER TOWN & COUNTRY

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

    1970-1971 DODGE CHALLENGER

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

    1968 PLYMOUTH BELVEDERE

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

    1983 DODGE CHARGER

    • EngineType: ALL
    • SubModel: 2.2

    1981-1988 DODGE W250 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1994 DODGE SHADOW

    • EngineType: ALL
    • SubModel: BASE

    1988-1989 DODGE W100 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1968-1969 CADILLAC CALAIS

    • EngineType: ALL
    • SubModel: ALL

    1964-1965 CHEVROLET K10 PICKUP

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

    1972-1973 DODGE POLARA

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

    1975 DODGE CORONET

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

    1968 DODGE CHARGER

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

    1970-1971 DODGE CHARGER

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

    1969 DODGE DART

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

    1968-1969 CHEVROLET EL CAMINO

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

    1983 PLYMOUTH SCAMP

    • EngineType: ALL
    • SubModel: ALL

    1965 PLYMOUTH VALIANT

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

    1969 DODGE MONACO

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

    1972-1978 DODGE B200 VAN

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

    1971 PLYMOUTH SATELLITE

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

    1976 DODGE CHARGER

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

    1962-1967 CHEVROLET CHEVY II

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

    1974 PLYMOUTH PB200 VAN

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

    1992 CHRYSLER LEBARON

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

    1974 PLYMOUTH DUSTER

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

    1986 DODGE RAMCHARGER

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

    1969 CHEVROLET K20 PICKUP

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

    1967-1968 CHEVROLET CHEVY II

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

    1983-1985 PLYMOUTH CARAVELLE

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