- 2007-2013 Mazda 3 Mazdaspeed
- 2007-2013 Mazda 3 (All Trim)
- 2014 -2018 Ford Focus ST
- 2014 -2018 Ford Focus (all trim)
- 2014 -2019 Ford Fiesta ST
Factory Packaged Product
• (set of 4) Iridium IX One Step Colder High Performance Spark Plug
NGK Iridium IX
Iridium IX high performance one step colder spark plugs for the Mazdaspeed3, Ford Focus ST and Fiesta ST are optimized for better durability, improved center electrode anti-oxidation and anti-erosion, improved ignition, superior anti-fouling and lower required voltage. One Step Colder plugs are only recommended for moderate-heavily modified Mazdaspeed3, Focus St and Fiesta ST motors only.
All other Mazda3, Focus, Fiesta trims, these plugs fit but must be re-gapped please check vehicle manual for vehicle specs.
*NGK's IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast. Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark Iridium Alloy has an Extremely High Melting Point, Perfect for Today's High-Tech, High Performance Engines Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties Corrugated Ribs Prevent Flashover Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer Copper Core Aids in Heat Removal Triple Seals Prevent Leakage.
Iridium IX one step colder spark plugs are not a direct bolt-in for the Mazdaspeed3. These plugs come pre-gapped to .044 and will need to be re-gapped into the .028-.031 stock range. Improper gapping can damage the delicate Iridium tip, so contact your local performance shop if you are unsure how to properly install these spark plugs. We cannot honor and returns or exchanges on damaged spark plugs due to improper gapping or use of the plugs at the improper gap. NGK One Step Colder plugs are only designed for applications with 100hp over stock.
14 DAY WARRANTY AFTER YOU RECEIVE YOUR ITEM We make returns as quick and painless as possible. You must contact us within 14 days of receiving your item and tell us if you want an exchange or money back. MONEY BACK: If you decide on money back we will fully refund your total amount after we receive the returned item. EXCHANGE AN ITEM: As soon we receive the returned item we will send out the new item an adjusted payments according to type of exchange (even exchange, less total amount or greater total amount). There is NO restocking fees, but all shipping fees for returns or exchanges are the customers' responsibility.