# NGK Iridium IX Spark Plug Box of 4 (LZTR4AIX-11) 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 2005-2008 Chrysler 300 C 2007-2008 Chrysler Aspen Limited 2001-2009 Chrysler PT Cruiser Base 2010 Chrysler PT Cruiser Classic 2010 Chrysler PT Cruiser Couture Edition 2002 Chrysler PT Cruiser Dream 2001-2007 Chrysler PT Cruiser Limited 2008-2009 Chrysler PT Cruiser LX 2006 Chrysler PT Cruiser Street Cruiser 2001-2009 Chrysler PT Cruiser Touring 2004-2006 Chrysler Sebring Base 2001-2004 Chrysler Sebring LX 2001-2002 Chrysler Voyager Base 2002 Chrysler Voyager Ec 2002-2003 Chrysler Voyager LX 2002 Dodge Caravan Ec 2001-2007 Dodge Caravan SE 2006 Dodge Charger Daytona R/T 2006-2008 Dodge Charger R/T 2008 Dodge Charger SE 2006-2008 Dodge Durango Adventurer 2004-2008 Dodge Durango Limited 2004-2008 Dodge Durango SLT 2005 Dodge Durango ST 2007 Dodge Durango SXT 2005-2008 Dodge Magnum R/T 2003-2008 Dodge Ram 1500 Laramie 2003-2008 Dodge Ram 1500 SLT 2006-2007 Dodge Ram 1500 Sport 2003-2008 Dodge Ram 1500 ST 2008 Dodge Ram 1500 SXT 2006-2007 Dodge Ram 1500 TRX4 2003,2005-2008 Dodge Ram 2500 Laramie 2006-2008 Dodge Ram 2500 Power Wagon 2003-2008 Dodge Ram 2500 SLT 2006-2007 Dodge Ram 2500 Sport 2003-2008 Dodge Ram 2500 ST 2008 Dodge Ram 2500 SXT 2006-2007 Dodge Ram 2500 TRX4 2003-2008 Dodge Ram 3500 Laramie 2003-2008 Dodge Ram 3500 SLT 2006-2007 Dodge Ram 3500 Sport 2003-2008 Dodge Ram 3500 ST 2008 Dodge Ram 3500 SXT 2002-2003 Dodge Stratus ES 2001-2004 Dodge Stratus SE 2002 Dodge Stratus SE Plus 2003-2006 Dodge Stratus SXT 2006-2008 Jeep Commander Limited 2007-2008 Jeep Commander Overland 2005-2008 Jeep Grand Cherokee Limited 2006-2008 Jeep Grand Cherokee Overland 2002-2005 Jeep Liberty Sport 2003-2006 Jeep Wrangler SE ## Details - **Price:** 71.68 CAD - **Vendor:** NGK - **Type:** Spark Plugs ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 71.68 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - out of package - Photo - out of package --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/ngk-iridium-ix-spark-plug-box-of-4-lztr4aix-11) > Updated: 2026-06-27