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.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000 | Aston Martin | DB7 | Vantage |
| 2000 | Aston Martin | DB7 | Vantage Volante |
| 2009-2015 | Cadillac | CTS | V |
| 2014-2015 | Chevrolet | Camaro | Z/28 |
| 2012-2015 | Chevrolet | Camaro | ZL1 |
| 2013 | Chevrolet | Corvette | 427 |
| 2008 | Chevrolet | Corvette | 427 Limited Edition Z06 |
| 2006-2013 | Chevrolet | Corvette | Z06 |
| 2011 | Chevrolet | Corvette | Z06 Carbon |
| 2009-2013 | Chevrolet | Corvette | ZR1 |
| 1996-2008,2010-2011 | Ford | Crown Victoria | Base |
| 2006-2009 | Ford | Crown Victoria | Fleet |
| 2002-2009 | Ford | Crown Victoria | LWB |
| 1997-2011 | Ford | Crown Victoria | LX |
| 2004 | Ford | Crown Victoria | LX Sport |
| 1996-2005,2008-2011 | Ford | Crown Victoria | Police Interceptor |
| 1996-2005 | Ford | Crown Victoria | S |
| 2005 | Ford | Crown Victoria | Special Edition |
| 2002-2003 | Ford | F-150 | Harley-Davidson Edition |
| 1999-2003 | Ford | F-150 | Lightning |
| 2004 | Ford | F-150 Heritage | SVT Lightning |
| 2005-2006 | Ford | GT | Base |
| 2007-2014 | Ford | Mustang | Shelby GT500 |
| 2008-2009 | Ford | Mustang | Shelby GT500KR |
| 2001-2004 | Ford | Ranger | Edge |
| 2004 | Ford | Ranger | Tremor |
| 1999-2004 | Ford | Ranger | XL |
| 1999-2004 | Ford | Ranger | XLT |
| 1999-2004 | Ford | Taurus | LX |
| 1999-2006 | Ford | Taurus | SE |
| 2000,2003 | Ford | Taurus | SE Comfort |
| 2004-2006 | Ford | Taurus | SEL |
| 2000-2004 | Ford | Taurus | SES |
| 2000 | Ford | Taurus | SVG |
| 2006-2007 | Lincoln | Town Car | Designer Series |
| 2006-2010 | Lincoln | Town Car | Executive |
| 2006-2011 | Lincoln | Town Car | Executive L |
| 2006 | Lincoln | Town Car | Protection Series |
| 2006-2007 | Lincoln | Town Car | Signature |
| 2006-2011 | Lincoln | Town Car | Signature L |
| 2006-2011 | Lincoln | Town Car | Signature Limited |
| 2001 | Mazda | B3000 | DS |
| 1999-2001 | Mazda | B3000 | SE |
| 2000 | Mazda | B3000 | SX |
| 1999-2000 | Mazda | B3000 | Troy Lee |
| 2006-2008 | Mercury | Grand Marquis | GS |
| 2006-2011 | Mercury | Grand Marquis | LS |
| 2003-2005 | Mercury | Sable | GS |
| 2001 | Mercury | Sable | LS |
| 1989 | Pontiac | Firebird | Trans Am |
| 1989 | Pontiac | Firebird | Trans Am GTA SE |
| 1990 | Pontiac | Grand Prix | Mclaren |
| 1989 | Pontiac | Grand Prix | SE |
| 1990 | Pontiac | Grand Prix | STE |
| 1968-1971 | Rover | 2000 | Base |
| 1968-1971 | Rover | 2000 | TC |