Accel Coil Packs Supercoil Blue Set With Stock Heat Range Spark Plugs Mustang EcoBoost 2015-2021

CJ's Part Number:


  • Improved Ignition Performance
  • Easy Installation
  • Stock Heat Range Plugs
  • Sold As A Set Of 4
MSRP $245.46
You save 10%

Accel Blue Supercoil Coil Packs with Stock Heat Range Spark Plugs Kit for 2015, 2016, 2017, 2018, 2019, 2020 and 2021 EcoBoost Mustangs.

Looking for an easy performance upgrade for your Mustang? These Accel Coil Packs improve performance thanks to more consistent fuel burn! The coils come with replacement spark plugs for a complete ignition refresh.

Features and Benefits:
- Up to 15% Increase in Spark Energy
- Improved Throttle Response
- Shock and Vibration Resistant High-Temperature Vacuum Applied Epoxy
- Maximizes Fuel Mileage
- Direct OEM Replacement
- ODB II Compatible
- Sold as a Set of 4
- Easy Installation
- Stock heat range plugs for stock Mustang
- Copper core for better conduction and heat dissipation

Accel’s Black Supercoil Coil Packs with Stock Heat Range Spark Plugs Kit (140670B-4 and 578-4) for EcoBoost Mustang will help unleash increased spark energy up to 15%. The Coils are made using High-Temperature Vacuum applied Epoxy that is Shock and Vibration resistant.

These are a Direct OEM replacement coil on plug design. Once installed you will notice your throttle response will increase and have a cleaner idle all the way to redline. This will also help maximize your fuel economy.

The Accel HP Copper Core Spark Plugs that come with the Black Coils are Stock Heat Range Plugs. They are Copper core and C-cut design grounding strap plugs. The threads are machined rolled for more precise thread engagement to your cylinder head.

This Kit Includes:
- Set of 4 Blue Accel Supercoil Coil Packs (140670B-4)
- Set of 4 Accel Stock Heat Range Spark Plugs (578-4)

Vehicle Fitment:
- 2015-2021 EcoBoost Mustang

Tech Tip: These spark plugs are designed for stock EcoBoost Mustangs. EcoBoost Mustangs equipped with aftermarket parts that increase horsepower or an aftermarket calibration please consider the Accel HP Copper Core Spark Plug Set that is One or Two Heat Ranges Colder for your 2015-2021 EcoBoost Mustang (CJ Part Numbers: SPCPK11 and SPCPK12).

California Residents: Proposition 65 Warning

Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:

  • 1965 and older U.S. manufactured California certified vehicles
  • 1967 and older U.S. manufactured federally certified vehicles

Vehicle Fitment

This product will fit the following Mustang years:

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