{"product_id":"c7-corvette-grand-sport-ngk-iridium-ix-spark-plugs-lt1","title":"C7 Corvette Grand Sport NGK Iridium IX Spark Plugs - LT1","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 LTR5IX-11 Spark Plugs for C7 Corvette Grand Sport LT1\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eNGK Iridium IX LTR5IX-11 spark plugs\u003c\/strong\u003e, \u003cstrong\u003estock number 4344\u003c\/strong\u003e, fit the \u003cstrong\u003e2017–2019 C7 Corvette Grand Sport\u003c\/strong\u003e with the \u003cstrong\u003eLT1 6.2L naturally aspirated 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\u003eGive your Grand Sport’s naturally aspirated LT1 a consistent set of ignition service parts. Fine-wire iridium firing tips support \u003cstrong\u003estable ignition and resist electrode wear\u003c\/strong\u003e, with all eight plugs included for a full V8 replacement. The corrosion-resistant plating helps protect the threaded shells for future removal. For coupe or convertible maintenance, you can order the complete plug quantity together and inspect the separate ignition components during the same service.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK stock number:\u003c\/strong\u003e 4344; \u003cstrong\u003edesign code:\u003c\/strong\u003e LTR5IX-11.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine-wire iridium center electrode:\u003c\/strong\u003e A durable firing tip designed to maintain a consistent spark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight spark plugs:\u003c\/strong\u003e Two manufacturer packs of four, enough for one V8.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark plugs only:\u003c\/strong\u003e Plug wires and ignition coils are separate components and are not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrivalent shell plating:\u003c\/strong\u003e Helps resist corrosion and supports 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\u003eOne complete plug order:\u003c\/strong\u003e Replace all eight plugs with a matching Iridium IX design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable firing tip:\u003c\/strong\u003e Iridium resists electrode wear while supporting stable ignition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService-friendly protection:\u003c\/strong\u003e Plated shells help protect the threads when your LT1 is due for its next plug change.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrand Sport fitment:\u003c\/strong\u003e Covers the 2017–2019 C7 Grand Sport with the naturally aspirated 6.2L LT1, in coupe or convertible form. Both manual and automatic transmissions are covered.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService planning:\u003c\/strong\u003e Keep the LTR5IX-11 and 4344 identifiers with your Grand Sport’s maintenance records. For a modified LT1, confirm the required plug specification with your engine builder or tuner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck before fitting:\u003c\/strong\u003e Confirm LTR5IX-11 and 4344 on the plugs and packaging, then inspect the ceramic insulators and electrodes for damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation gap:\u003c\/strong\u003e Use 0.044 inch for this stock LT1 fitment. Measure every plug before installation; the supplied gap is not a substitute for the vehicle’s required setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtect the fine tip:\u003c\/strong\u003e Use a round-wire or pin gauge. Any adjustment must move only the ground electrode without levering against the center tip. Ask a qualified installer if a large adjustment is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry threads and correct torque:\u003c\/strong\u003e Do not add anti-seize or lubricant. Follow the vehicle’s tightening specification so the plug seats correctly and transfers heat as intended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #ff0000;\"\u003eCORVETTE COMPATIBILITY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2017–2019 C7 Corvette Grand Sport\u003c\/li\u003e\n\u003cli\u003eLT1 6.2L naturally aspirated engine, stock configuration\u003c\/li\u003e\n\u003cli\u003eCoupe and convertible\u003c\/li\u003e\n\u003cli\u003eManual and automatic transmissions\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 4344 LTR5IX-11 Iridium IX spark plugs\u003c\/strong\u003e for your C7 Corvette Grand Sport LT1? Contact us for personal help before you order.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":67714804547821,"sku":"4344","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1359\/4413\/files\/ngk-iridium-ix-corvette-spark-plug.png?v=1791740597","url":"https:\/\/www.corvettepartsandaccessories.com\/products\/c7-corvette-grand-sport-ngk-iridium-ix-spark-plugs-lt1","provider":"Corvette Parts from Custom Corvette Accessories","version":"1.0","type":"link"}