NGK (LFR5AIX-11) Iridium IX Spark Plugs Nissan 350z 2003-2006 / Infiniti G35 2003-2007 | 4469 Civic_2016-2021 5in tubing and large radius

5in tubing and large radius bends decrease restriction for the charge air

high rpm racing engines

anodized in black

Here's a large variety of colors you can choose to dress up the front of your vehicle

NGK (LFR5AIX-11) Iridium IX Spark Plugs Nissan 350z 2003-2006 / Infiniti G35 2003-2007 | 4469 Civic_2016-2021 5in tubing and large radiusFitment Information: 2003 2006 Nissan 350z 2003 2007 Infiniti G35 Features: Sold as a set of 4 spark plugs 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 Longevity: 50k Miles 60 Days manufacturer Warranty ShellSpark Plug Thread