Select Option
From $20.65
Original: $59.00
-65%NGK LTR71X-II Iridium Spark Plug Set (+1 Step Colder)—
$59.00
$20.65The Story
Pre-gapped by Mountune.
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 and includes gap setting!
Features:
- Smoother acceleration
- Perfect for high-boost street use
- Pre-gapped by Mountune - Choose your application when ordering!
Applications:
2013-2018 Focus ST
2016-2018 Focus RS
2019-2023 Ranger
2014-2019 Fiesta ST
2017-2020 F150 Raptor
Description
Pre-gapped by Mountune.
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 and includes gap setting!
Features:
- Smoother acceleration
- Perfect for high-boost street use
- Pre-gapped by Mountune - Choose your application when ordering!
Applications:
2013-2018 Focus ST
2016-2018 Focus RS
2019-2023 Ranger
2014-2019 Fiesta ST
2017-2020 F150 Raptor
