Accel Spark Plug HP Copper Core Two Heat Ranges Colder Set Focus ST 2013-2018/Focus RS 2016-2018

To make sure you are getting the most out of your heavily modified 2013-2018 Focus ST or 2016-2018 Focus RS, these HP Copper Core Spark Plugs are designed with aftermarket engine upgrades in mind. This engine specific set of four HP Copper Core Spark Plugs are offered two heat ranges colder than stock heat range and will improve heat dissipation and conduction to optimize your upgraded engine performance.

Accel Spark Plug 578C2-4 Features and Benefits:
- Set includes 4 total spark plugs
- Two heat ranges colder for Focuses with extreme performance modifications
- Copper core provides better conduction and heat dissipation
- C-cut design un-shrouds the spark for a better burn
- Machine rolled threads for precise thread engagement
- As opposed to Iridium or Platinum spark plugs, HP Copper plugs are gapable

If your 2013-2018 Focus ST or your 2016-2018 Focus RS utilizes an aftermarket turbocharger, increased boost and/or alternative fuels (race gas) in addition to a custom calibration that creates higher than stock cylinder combustion pressures and/or sustained higher RPMs, this set of HP Copper Core Spark Plugs are engine specific to your needs. Accel's new spark plugs will decrease the chance of a misfire and improve your heat dissipation through their patented copper core design. This Set of HP Copper Core spark Plugs are gapable for further increased engine power.

Please Note: These upgraded, high-quality spark plugs are two heat ranges colder than the stock 2013-2018 Focus ST and 2016-2018 Focus RS spark plugs. For stock applications, please see CJ Pony Parts Number: SP5784F and for applications using typical bolt-on parts and an off-the-shelf calibration, please see CJ Pony Parts Number: SP578C14F.

Order this Set of Accel 578C2-4 HP Copper Core Two Heat Ranges Colder Spark Plugs for your 2013, 2014, 2015, 2016, 2017 or 2018 Focus ST or 2016, 2017 and 2018 Focus RS today from CJ Pony Parts.