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Accel HP Copper Spark Plug 578C1-6

Accel HP Copper Spark Plug 578C1-6
$64.99 ea
NEWARRIVING SOONEstimated Ship Date 12/10/2024 (If Ordered Today)89 Available from HOLLEY PERFORMANCE PRODUCTS as of 11/22/2024
Model: 3988761
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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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.
Features:
  • 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
  • One step colder than stock
  • Whether using on the street or on the strip, ACCEL HP Copper Core spark plugs deliver!
About Accel Performance Group

For more than 40 years, ACCEL has been a leader in performance fuel and ignition systems, proving itself on the racetracks and drag strips of the world – and on the street. With an ever-expanding line of SuperCoils and all the spark plug wires, tune-up kits, and fuel injectors hot rodders have trusted and relied on for years, ACCEL is constantly developing innovative new products designed to push power, speed, and performance to match advancements in automotive technology. Now part of Holley Performance, ACCEL offers a comprehensive selection of performance products, including coils, digital fuel injection systems, fuel injectors, distributors, caps, rotors, ignition wires, spark plugs.

Videos:

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Ford Mustang EcoBoost Premium 2015 2.3L / 140 / L4
Ford Mustang EcoBoost Premium 2016 2.3L / 140 / L4
Ford Mustang EcoBoost Premium 2017 2.3L / 140 / L4
Ford Mustang EcoBoost Premium 2018 2.3L / 140 / L4
Ford Mustang EcoBoost Premium 2019 2.3L / 140 / L4
Ford Mustang EcoBoost 2015 2.3L / 140 / L4
Ford Mustang EcoBoost 2016 2.3L / 140 / L4
Ford Mustang EcoBoost 2017 2.3L / 140 / L4
Ford Mustang EcoBoost 2018 2.3L / 140 / L4
Ford Mustang EcoBoost 2019 2.3L / 140 / L4

Specifications:

Application Ford EcoBoost
Emission Code 2
Gap .030"
Gap Size .030"
Heat Range 1 Step Colder
Hex Size 5/8"
Length Standard
Package Quantity 6
Part Type Spark Plug
Product Type Spark Plug
Projected Tip Yes
Qty 6
Reach 1"
Resistor Yes
Seat Type Tapered
Style Copper Core
Thread Pitch 1.25mm
Thread Size 14 MM
Torque Specification 7.2-14.5 lb.ft.

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