HP Copper Spark Plug

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Part
ACCEL 578-4

ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.

  • The Copper core is a better conductor than Iridium or Platinum plugs
  • Copper dissipates heat much better than other materials
  • "C" - Cut Design un-shrouds the spark kernel for a better burn
  • Unlike Iridium or Platinum plugs, the ACCEL HP plugs are gapable
  • Machine rolled threads for precise thread engagement
  • Stock Heat Range
  • Whether using on the street or on the strip, ACCEL HP Copper Core spark plugs deliver!
More Information
PartACCEL 578-4
Manufacturer Part Number578-4
UPC90127745724
BrandACCEL
ApplicationFord EcoBoost
Emission Code2
Heat RangeStock
Part TypeSpark Plug
Reach1"
Seat TypeTapered
StyleCopper Core
Thread Size14mm
Typeproduct
Item ReturnsThis item can be returned

ApplicationFord EcoBoost
BrandACCEL
Emission Code2
GAP.030"
Heat RangeStock
Hex Size5/8"
LengthStandard
Product TypeSpark Plug
Projected TipYes
Qty4
Reach1"
ResistorYes
Seat TypeTapered
StyleCopper Core
Thread Pitch1.25mm
Thread Size14mm
Torque Specification7.2-14.5 lb.ft.

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