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Denso 5378

Iridium Performance IWF20 Spark Plug Heat Range: 20

Denso 5378

313-5378 NEW

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Denso 5378 Iridium Performance IWF20 Spark Plug Heat Range: 20 $11.99
Iridium Performance IWF20 Spark Plug
  • Heat Range: 20
  • 1.5mm Insulator Projection
    Sold Individually

  • The fundamental design of this new generation of Denso Iridium Power spark plugs retains the proven features used in Denso's OE products and combines a revolutionary Iridium alloy with laser welding technology that allows Denso to harness the power of Iridium. Using Iridium, which is six times harder and eight times stronger than platinum, the tip can be shrunk to only 0.4mm. This means the voltage requirements are decreased while firing performance is greatly improved. A U-Groove has been cut inside the ground electrode to maintain the large volume of space required to form the nucleus of a flame. While still keeping the required voltage low, this powerful technology enables excellent firing performance without increasing the spark gap. The tip of the ground electrode has been cut to form a taper. This greatly improves firing performance by reducing quenching. The extreme hardness and high melting point of Iridium prevented the use of this incredible metal until Denso perfected the Laser Welding Process, which provides a 360° seal so reliable the electrode resists wear even in the harshest conditions.

    Features:
  • Iridium Alloy for a durable, long life design
  • Minimal Firing Resistance and Maximum Firing Performance
  • 360 Degree Laser welded for Superior Electrode Performance
  • Available in a Wide Range of Heat Ranges and Fitments

    Heat Range
    Hot                     Cold
    9 14 16 20 22 24 27 29 31 32 34 35

  • Does Denso 5378 fit your vehicle?

    Narrow Results

    1962 TRIUMPH TR3B

    • CC: 1991
    • Liter: 2.0
    • SubModel: BASE
    • EngineType: L4 ( 2.0 L / 1991 CC )

    1973-1974 VOLVO 142

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • EngineType: L4 ( 2.0 L / 1990 CC )

    1968-1969 RENAULT R10

    • EngineType: ALL
    • SubModel: ALL

    1973-1974 VOLVO 142

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1971-1973 OPEL OPEL

    • CC: 1897
    • Liter: 1.9
    • SubModel: GT
    • CUI: 116
    • EngineType: L4 ( 1.9 L / 116 )

    1973-1974 VOLVO 144

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1967 VOLVO 1800

    • EngineType: ALL
    • SubModel: BASE

    1970-1971 VOLVO 144

    • CC: 1986
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1973-1974 VOLVO 142

    • EngineType: ALL
    • SubModel: S

    1971-1973 OPEL OPEL

    • CC: 1898
    • Liter: 1.9
    • SubModel: GT
    • EngineType: L4 ( 1.9 L / 1898 CC )

    1971 VOLVO 142

    • EngineType: ALL
    • SubModel: E

    1973-1974 OPEL MANTA

    • CC: 1897
    • Liter: 1.9
    • SubModel: BASE
    • CUI: 116
    • EngineType: L4 ( 1.9 L / 116 )

    1973-1974 VOLVO 144

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • EngineType: L4 ( 2.0 L / 1990 CC )

    1970-1971 VOLVO 142

    • CC: 1986
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1962-1968 VOLVO 122

    • EngineType: ALL
    • SubModel: S

    1973-1974 VOLVO 145

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • EngineType: L4 ( 2.0 L / 1990 CC )

    1968-1971 VOLVO 145

    • EngineType: ALL
    • SubModel: S

    1973-1974 VOLVO 144

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1974 VOLVO 144

    • EngineType: ALL
    • SubModel: GL

    1962 TRIUMPH TR3B

    • CC: 1991
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1973-1974 VOLVO 145

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1968 VOLVO 1800

    • EngineType: ALL
    • SubModel: S

    1972 OPEL OPEL

    • CC: 1077
    • Liter: 1.1
    • SubModel: GT
    • CUI: 66
    • EngineType: L4 ( 1.1 L / 66 )

    1971-1972 OPEL 1900

    • CC: 1897
    • Liter: 1.9
    • SubModel: RALLYE
    • CUI: 116
    • EngineType: L4 ( 1.9 L / 116 )

    1977-1979 RENAULT LECAR

    • EngineType: ALL
    • SubModel: ALL

    1970-1971 VOLVO 145

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • EngineType: L4 ( 2.0 L / 1990 CC )

    1964-1965 VOLVO 1800

    • EngineType: ALL
    • SubModel: BASE

    1970-1971 RENAULT R10

    • CC: 1289
    • Liter: 1.3
    • SubModel: BASE
    • CUI: 79
    • EngineType: L4 ( 1.3 L / 79 )

    1970-1971 VOLVO 144

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • EngineType: L4 ( 2.0 L / 1990 CC )

    1968-1971 VOLVO 144

    • EngineType: ALL
    • SubModel: S

    1973-1974 VOLVO 142

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1969 VOLVO 1800

    • CC: 1986
    • Liter: 2.0
    • SubModel: S
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1964-1965 VOLVO 1800

    • CC: 1780
    • Liter: 1.8
    • SubModel: S
    • CUI: 109
    • EngineType: L4 ( 1.8 L / 109 )

    1973 VOLVO 1800

    • CC: 1990
    • Liter: 2.0
    • SubModel: ES
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1970-1971 VOLVO 142

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • EngineType: L4 ( 2.0 L / 1990 CC )

    1970-1971 RENAULT R10

    • CC: 1108
    • Liter: 1.1
    • SubModel: BASE
    • CUI: 68
    • EngineType: L4 ( 1.1 L / 68 )

    1961-1963 VOLVO 1800

    • EngineType: ALL
    • SubModel: ALL

    1973 VOLVO 1800

    • CC: 1990
    • Liter: 2.0
    • SubModel: ES
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1962-1963 CHEVROLET CORVAIR

    • EngineType: ALL
    • SubModel: ALL

    1973-1974 VOLVO 145

    • EngineType: ALL
    • SubModel: S

    1962-1965 VOLVO 544

    • EngineType: ALL
    • SubModel: ALL

    1970-1971 VOLVO 145

    • CC: 1986
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1976 RENAULT R5

    • EngineType: ALL
    • SubModel: ALL

    1973-1974 VOLVO 144

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1973-1974 VOLVO 144

    • EngineType: ALL
    • SubModel: S

    1973 VOLVO 1800

    • CC: 1990
    • Liter: 2.0
    • SubModel: ES
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1970-1971 VOLVO 145

    • CC: 1986
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1973-1974 VOLVO 144

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1968-1971 VOLVO 142

    • EngineType: ALL
    • SubModel: S

    1973-1974 VOLVO 142

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1970-1971 VOLVO 142

    • CC: 1986
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1973 VOLVO 1800

    • CC: 1990
    • Liter: 2.0
    • SubModel: ES
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1969 VOLVO 1800

    • CC: 1986
    • Liter: 2.0
    • SubModel: S
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1973-1974 OPEL MANTA

    • CC: 1898
    • Liter: 1.9
    • SubModel: BASE
    • EngineType: L4 ( 1.9 L / 1898 CC )

    1975 VOLVO 244

    • EngineType: ALL
    • SubModel: ALL

    1964-1965 VOLVO 1800

    • CC: 1780
    • Liter: 1.8
    • SubModel: S
    • CUI: 109
    • EngineType: L4 ( 1.8 L / 109 )

    1973-1974 VOLVO 145

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1973-1974 VOLVO 145

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1971-1974 OPEL 1900

    • CC: 1897
    • Liter: 1.9
    • SubModel: BASE
    • CUI: 116
    • EngineType: L4 ( 1.9 L / 116 )

    1971-1974 OPEL 1900

    • CC: 1898
    • Liter: 1.9
    • SubModel: BASE
    • EngineType: L4 ( 1.9 L / 1898 CC )

    1961 TRIUMPH TR3A

    • CC: 1991
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 122
    • EngineType: L4 ( 2.0 L / 122 )

    1975 VOLVO 245

    • EngineType: ALL
    • SubModel: ALL

    1971-1972 OPEL 1900

    • CC: 1898
    • Liter: 1.9
    • SubModel: RALLYE
    • EngineType: L4 ( 1.9 L / 1898 CC )

    1973-1974 VOLVO 145

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1960 TRIUMPH TR3A

    • EngineType: ALL
    • SubModel: ALL

    1973-1974 VOLVO 142

    • CC: 1990
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1970-1975 VOLVO 164

    • EngineType: ALL
    • SubModel: ALL

    1974 VOLVO 142

    • EngineType: ALL
    • SubModel: GL

    1970-1971 VOLVO 144

    • CC: 1986
    • Liter: 2.0
    • SubModel: BASE
    • CUI: 121
    • EngineType: L4 ( 2.0 L / 121 )

    1971 OPEL OPEL

    • CC: 1077
    • Liter: 1.1
    • SubModel: GT
    • CUI: 66
    • EngineType: L4 ( 1.1 L / 66 )

    1975 VOLVO 242

    • EngineType: ALL
    • SubModel: ALL

    1970-1971 RENAULT R10

    • CC: 1289
    • Liter: 1.3
    • SubModel: BASE
    • EngineType: L4 ( 1.3 L / 1289 CC )

    1967 VOLVO 1800

    • CC: 1780
    • Liter: 1.8
    • SubModel: S
    • CUI: 109
    • EngineType: L4 ( 1.8 L / 109 )
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