NGK Iridium Spark Plug Set LTR71X-II
The EcoBoost engine operates under extreme
conditions including high cylinder pressures. The spark plugs are subject to
rapid wear rates, even at standard performance levels. Engines running higher
boost points or increased levels of tuning can experience reduced spark plug
life resulting in lower engine performance, misfires and rough idle. Increased
wear is typically seen in the form of increased spark plug gap and degradation
of the electrode. Using spark plugs that are optimized for increased power
insures maximum performance.
Includes pre-gapping by Mountune to optimized setting.
The NGK LTR71X-II is
one step colder than the original spark plug and perfect for those running additional
boost pressure and typical bolt on modifications.
Price is for a set of 4.
- Focus ST 2013-2017
- Focus RS 2016-2017
- Smoother acceleration
- Perfect for high boost street use
- Pre-gapped by Mountune - Choose your application when ordering!
This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards. Click Here for Emissions compliance information.