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NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
- Trivalent metal plating for superior anti-corrosion and anti-seizing properties
- Outstanding acceleration, high fuel efficiency and durability
- Fine iridium tip ensures durable and consistent spark
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2010 | Ford | Expedition | Eddie Bauer |
| 2008-2010 | Ford | Expedition | EL Eddie Bauer |
| 2008-2014 | Ford | Expedition | EL King Ranch |
| 2008-2014 | Ford | Expedition | EL Limited |
| 2011-2014 | Ford | Expedition | EL XL |
| 2008-2014 | Ford | Expedition | EL XLT |
| 2008 | Ford | Expedition | Funkmaster Flex Edition |
| 2008-2014 | Ford | Expedition | King Ranch |
| 2008-2014 | Ford | Expedition | Limited |
| 2011-2014 | Ford | Expedition | XL |
| 2008-2014 | Ford | Expedition | XLT |
| 2008-2010 | Ford | Explorer | Eddie Bauer |
| 2008-2010 | Ford | Explorer | Limited |
| 2008-2010 | Ford | Explorer | XLT |
| 2008-2010 | Ford | Explorer Sport Trac | Limited |
| 2008-2010 | Ford | Explorer Sport Trac | XLT |
| 2008,2010 | Ford | F-150 | FX2 |
| 2008-2010 | Ford | F-150 | FX4 |
| 2008,2010 | Ford | F-150 | Harley-Davidson Edition |
| 2008-2010 | Ford | F-150 | King Ranch |
| 2008-2010 | Ford | F-150 | Lariat |
| 2008 | Ford | F-150 | Limited |
| 2009-2010 | Ford | F-150 | Platinum |
| 2009-2010 | Ford | F-150 | STX |
| 2010 | Ford | F-150 | SVT Raptor |
| 2008 | Ford | F-150 | THE 60TH ANNIVERSARY EDITION |
| 2008-2010 | Ford | F-150 | XL |
| 2008-2010 | Ford | F-150 | XLT |
| 2009-2010 | Ford | F-250 Super Duty | Cabela's |
| 2008-2009 | Ford | F-250 Super Duty | FX4 |
| 2008-2009 | Ford | F-250 Super Duty | Harley-Davidson Edition |
| 2008-2010 | Ford | F-250 Super Duty | King Ranch |
| 2008-2010 | Ford | F-250 Super Duty | Lariat |
| 2008-2010 | Ford | F-250 Super Duty | XL |
| 2008-2010 | Ford | F-250 Super Duty | XLT |
| 2009-2010 | Ford | F-350 Super Duty | Cabela's |
| 2008-2009 | Ford | F-350 Super Duty | FX4 |
| 2008-2009 | Ford | F-350 Super Duty | Harley-Davidson Edition |
| 2008-2010 | Ford | F-350 Super Duty | King Ranch |
| 2008-2010 | Ford | F-350 Super Duty | Lariat |
| 2008-2010 | Ford | F-350 Super Duty | XL |
| 2008-2010 | Ford | F-350 Super Duty | XLT |
| 2008-2009 | Ford | Mustang | Bullitt |
| 2008-2010 | Ford | Mustang | GT |
| 2008 | Ford | Mustang | Shelby GT |
| 2008 | Lincoln | Mark LT | Base |
| 2008-2014 | Lincoln | Navigator | Base |
| 2008-2014 | Lincoln | Navigator | L |
| 2008-2010 | Mercury | Mountaineer | Premier |