NGK Ruthenium HX (set of 4) 1 step colder Spark Plugs 2014-2019 Fiesta ST
(set of 4) 1-step colder plugs for your Fiesta ST
factory gapped to .030
RUTHENIUM HX™
Ruthenium HX™ brings the most advanced spark plug technology to the automotive aftermarket, delivering better efficiency and power for today’s engines.
THE NGK DIFFERENCE
- DFE & PSPE® tip designs
- Superior oxidation resistance
- Advanced high-ignitability technology
- Enhanced blistering/anti-peeling
THE LATEST INNOVATION IN PRECIOUS METAL SPARK PLUGS.
Modern engines demand more power while using less fuel, shortening the life of traditional iridium and platinum spark plugs. NGK’s patented ruthenium technology stands up better to wear to bring maximum durability and performance to your engine.
*custom gapped spark plugs sets ship in 1-3 business days
Customer Reviews
More from this collection
Great product
Plugs work great as expected
Gapped correctly.
First of off Ron had these at my door step fast so kudos to him. So far so good car runs and idles good would recommend.
I run these NGK Ruthenium HX 1-step colder plugs in Pearl, my Fiesta ST, and they’ve been perfect. I run mine down to .025, pre-gapped. Cold starts are smooth, idle is rock solid, and they handle boost without a hiccup. These plugs hold up to hard pulls, daily driving, and E85 without showing signs of wear. If you’re pushing your ST harder than stock, this is an easy and reliable upgrade.
