{"product_id":"c6-corvette-427-convertible-ngk-iridium-ix-spark-plugs-ls7","title":"C6 Corvette 427 Convertible NGK Iridium IX Spark Plugs - LS7","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 427 Convertible LS7\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\u003e2013 C6 Corvette 427 Convertible\u003c\/strong\u003e with the \u003cstrong\u003eLS7 7.0L 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\u003eThe 427 Convertible brings LS7 power to an open-top C6, and its service parts should follow that engine. This eight-plug set combines the quantity for all eight cylinders with fine-wire iridium construction designed for \u003cstrong\u003econsistent ignition and electrode durability\u003c\/strong\u003e. Plan the plug replacement as an eight-cylinder service, then inspect the separate wires and coils rather than assuming they are included with the plugs.\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\u003ePlated steel shell:\u003c\/strong\u003e Trivalent metal plating provides corrosion protection on the threaded shell and helps with removal when the plugs are serviced again.\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\u003eThread protection:\u003c\/strong\u003e The plated shell helps resist corrosion and provides a release layer for later removal, without a separate anti-seize treatment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFitment is the \u003cstrong\u003eone-year 2013 427 Convertible Collector Edition\u003c\/strong\u003e with the 7.0L LS7.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the supplied parts:\u003c\/strong\u003e Look for TR6IX and stock number 3689 on the replacement-plug packaging. Inspect the ceramic insulators and fine-wire electrodes before installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep a service record:\u003c\/strong\u003e Note the replacement date, mileage and TR6IX identification with your 427 Convertible’s maintenance information. Use the vehicle’s applicable service guidance for future plug inspections.\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\u003eProtect the iridium tip:\u003c\/strong\u003e Use a round-wire or pin gauge to check the gap. Any adjustment should move the ground electrode without pressing or prying against the center electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo added thread lubricant:\u003c\/strong\u003e Fit NGK plugs dry, without anti-seize. Added lubrication changes the relationship between applied torque and the load on the plug.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect tightening matters:\u003c\/strong\u003e An incorrectly tightened plug can have poor heat transfer or suffer damage. Follow the applicable service instructions, or use a qualified installer if the procedure is unfamiliar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart with a cool engine:\u003c\/strong\u003e Clean the plug holes before fitting the new set. Debris can prevent full seating even when a torque wrench reaches its setting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #ff0000;\"\u003eCORVETTE COMPATIBILITY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2013 C6 Corvette 427 Convertible\u003c\/li\u003e\n\u003cli\u003eLS7 7.0L engine, stock configuration\u003c\/li\u003e\n\u003cli\u003eConvertible\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 2013 C6 Corvette 427 Convertible LS7? Contact us for personal help before you order.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":67707624128749,"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-427-convertible-ngk-iridium-ix-spark-plugs-ls7","provider":"Corvette Parts from Custom Corvette Accessories","version":"1.0","type":"link"}