Accel Coil Packs With 2 Heat Range Colder Spark Plugs Black Mustang EcoBoost 2015-2021

CJ's Part Number:


  • Simple Installation
  • Improved Ignition Performance
  • Four Total Plugs
  • For Highly Modified Cars
MSRP $246.06
You save 10%

Accel Black Coil Packs With 2 Heat Range Colder Spark Plugs for 2015, 2016, 2017, 2018, 2019, 2020 and 2021 EcoBoost Mustangs.

Running high PSI forced induction on your EcoBoost Mustang? Colder plugs and more powerful coils will do your engine good! These Coils from Accel come with colder plugs for a comprehensive performance improvement!

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
- Colder Plugs For High Boost Modified Cars

Accel’s Black Supercoil Coil Packs with 2 Heat Range Colder Spark Plugs for 2015-2021 EcoBoost Mustang will help unleash an 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 in your 2015-2021 EcoBoost Mustang.

The Accel HP Copper Core Spark Plugs that come with the Black Coils are 2 Heat Range Colder Plugs than stock heat range and will improve heat dissipation and conduction to optimize your upgraded engine performance and ideal for applications using added boost or alternative fuels (race gas).

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 on any 2015-2021 EcoBoost Mustangs.

This Kit Includes:
- Set of 4 Black Accel Supercoil Coil Packs (140670K-4)
- Set of 4 Accel Stock Heat Range Spark Plugs (578C2-4)

Vehicle Fitment:
- 2015-2021 EcoBoost Mustangs

Tech Tip: The upgraded high-quality spark plugs that are included in this kit are two heat ranges colder than the stock 2015-2021 EcoBoost spark plugs and ideal for applications using added boost or alternative fuels (race gas). For stock applications, please see CJ Pony Parts Number: SPCPK7 and for applications using typical bolt-on parts and an off-the-shelf calibration, please see CJ Pony Parts Number: SPCPK8.

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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