{"product_id":"c6-corvette-zr1-ngk-iridium-ix-spark-plugs-ls9","title":"C6 Corvette ZR1 NGK Iridium IX Spark Plugs - LS9","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1359\/4413\/files\/cca-9-99-shipping-performance-banner-v2.2.png?v=1784322136\" alt=\"CCA $9.99 shipping - Continental U.S.\" width=\"1458\" height=\"240\" style=\"display:block;width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eNGK Iridium IX TR6IX Spark Plugs for C6 Corvette ZR1 LS9\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eNGK Iridium IX TR6IX spark plugs\u003c\/strong\u003e, \u003cstrong\u003estock number 3689\u003c\/strong\u003e, fit the \u003cstrong\u003e2009-2013 C6 Corvette ZR1\u003c\/strong\u003e with the \u003cstrong\u003eLS9 6.2L supercharged engine\u003c\/strong\u003e. This offer includes \u003cstrong\u003eeight spark plugs supplied as two packs of four\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eServicing your LS9 starts with a matched set for all eight cylinders. The fine iridium tip supports \u003cstrong\u003econsistent ignition and resists electrode wear\u003c\/strong\u003e, giving stock ZR1 owners an Iridium IX replacement option with the full V8 quantity in one order. Keep the plug choice tied to the engine configuration you are actually servicing. For a factory-specification ZR1, this is a complete spark-plug order; the condition of the separate wires and coils still needs its own inspection.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK stock number:\u003c\/strong\u003e 3689; \u003cstrong\u003edesign code:\u003c\/strong\u003e TR6IX.\u003c\/li\u003e\n\u003cli\u003eIridium fine-wire center electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight spark plugs:\u003c\/strong\u003e two packs of four.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark plugs only;\u003c\/strong\u003e plug wires and ignition coils are not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-resistant plating:\u003c\/strong\u003e The threaded steel shell uses trivalent metal plating to help resist corrosion and aid removal at a later plug service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete V8 quantity:\u003c\/strong\u003e One order supplies all eight replacement plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable spark:\u003c\/strong\u003e The fine iridium tip supports consistent ignition and resists electrode wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasier later servicing:\u003c\/strong\u003e Protective shell plating resists corrosion and acts as a release layer when the LS9 plugs are removed again.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFor the \u003cstrong\u003efactory-supercharged 6.2L LS9\u003c\/strong\u003e in the 2009–2013 C6 ZR1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify before fitting:\u003c\/strong\u003e Check TR6IX and stock number 3689 on the replacement-plug packaging, then inspect each plug’s ceramic insulator and electrodes before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor a modified LS9:\u003c\/strong\u003e Have your engine builder or tuner confirm the plug requirements for the actual pulley, boost and calibration setup before ordering.\u003c\/li\u003e\n\u003cli\u003eConfirm the \u003cstrong\u003einstallation gap and tightening specification\u003c\/strong\u003e for your exact vehicle. Do not assume the plug's supplied gap is the required setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck without damaging the tip:\u003c\/strong\u003e Use a round-wire or pin gauge. If adjustment is needed, bend only the ground electrode with the proper tool, keeping pressure off the fine center tip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep the threads dry:\u003c\/strong\u003e Install these plated plugs without anti-seize or thread lubricant; lubrication alters the effect of the specified tightening torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollow the tightening procedure:\u003c\/strong\u003e Incorrect torque can damage a plug or interfere with heat transfer. If you are unfamiliar with the work, have a qualified installer perform it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWork on a cool engine:\u003c\/strong\u003e Keep the plug holes clean before installation. Dirt at the seating area can interfere with tightening and leave a plug improperly seated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #ff0000;\"\u003eCORVETTE COMPATIBILITY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2009-2013 C6 Corvette ZR1\u003c\/li\u003e\n\u003cli\u003eLS9 6.2L supercharged engine, stock configuration\u003c\/li\u003e\n\u003cli\u003eCoupe\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Buy from Custom Corvette Accessories?\u003c\/h3\u003e\n\u003cp\u003eAt Custom Corvette Accessories, we’re Corvette owners ourselves, and we offer \u003cstrong\u003eone-on-one customer service\u003c\/strong\u003e to help you choose parts for your car. Have a question about \u003cstrong\u003eNGK 3689 TR6IX Iridium IX spark plugs\u003c\/strong\u003e for your C6 Corvette ZR1 LS9? Contact us for personal help before you order.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":67707627897069,"sku":"3689","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1359\/4413\/files\/ngk-3689-tr6ix-iridium-ix-corvette-spark-plug.png?v=1791730540","url":"https:\/\/www.corvettepartsandaccessories.com\/products\/c6-corvette-zr1-ngk-iridium-ix-spark-plugs-ls9","provider":"Corvette Parts from Custom Corvette Accessories","version":"1.0","type":"link"}