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Best Prices: Denso (5378) IWF20 Iridium Spark Plug, Pack of 1 » Denso

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Part Name: Denso (5378) IWF20 Iridium Spark Plug, Pack of 1
Part Number: 5378, NP5378, IWF20, NPIWF20
Part Brand: Denso

Part Image / Picture

Denso (5378) IWF20 Iridium Spark Plug, Pack of 1 (5378, NP5378, IWF20, NPIWF20)

Part Description & Details

Denso's Iridium power spark plugs help your vehicle achieve unparalleled performance. It alters the belief that a mere spark plug can add power and mileage. This is done by combining an ultra-fine 0.4mm diameter Iridium center electrode with a tapered cut U-groove ground electrode. Iridium conducts electricity better than platinum, however what makes it exceptional is it's also 6x harder and 8x stronger than platinum. Because of this, the center electrode can be machined down to 0.4mm. This ultra-fine iridium center electrode provides superior ignition performance during acceleration and top cruising RPM. The U-groove ground electrode creates a larger, brighter flame kernel. The tip of the ground electrode has been tapered which further improves firing performance by reducing quenching. All of these features combine to give more horsepower to your motor.

Features:
  • Denso # 5378
  • 0.4mm Iridium Center Electrode
  • Tapered Cut U-groove Ground Electrode

Vehicles & Years

  • 1972-1972 Opel 1900
  • 1972-1972 Opel Kadett
  • 1972-1973 Opel Manta
  • 1971-1973 Opel Opel
  • 1978-1979 Renault LeCar
  • 1970-1970 Renault R10
  • 1971-1976 Renault R12
  • 1976-1976 Renault R15
  • 1970-1970 Renault R16
  • 1976-1976 Renault R5
  • 1962-1967 Volvo 122
  • 1968-1971 Volvo 142
  • 1967-1971 Volvo 144
  • 1970-1973 Volvo 145
  • 1971-1974 Volvo 164
  • 1961-1969 Volvo 1800
  • 1975-1975 Volvo 242
  • 1975-1975 Volvo 244
  • 1975-1975 Volvo 245
  • 1965-1965 Volvo 544

 

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