{"product_id":"c5-corvette-ngk-g-power-spark-plugs-ls1","title":"C5 Corvette NGK G-Power Spark Plugs - LS1","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 G-Power TR5GP Platinum Spark Plugs for C5 Corvette LS1\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eNGK G-Power TR5GP platinum spark plugs\u003c\/strong\u003e, \u003cstrong\u003estock number 3186\u003c\/strong\u003e, fit the \u003cstrong\u003e1997–2004 C5 Corvette LS1\u003c\/strong\u003e with its stock \u003cstrong\u003eLS1 5.7L V8\u003c\/strong\u003e. This offer supplies \u003cstrong\u003eeight spark plugs as two manufacturer packs of four\u003c\/strong\u003e, giving you a complete engine set for scheduled spark-plug replacement.\u003c\/p\u003e\n\u003cp\u003eFor an LS1-powered C5 used on the road, G-Power combines a \u003cstrong\u003e0.6 mm fine-wire platinum center electrode\u003c\/strong\u003e with a trapezoidal ground electrode. The fine center tip focuses the spark, while the ground-electrode shape reduces interference with early flame development. A copper core helps carry heat away from the firing end during normal engine operation.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug identity:\u003c\/strong\u003e NGK 3186, design code TR5GP, G-Power platinum spark plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiring-end design:\u003c\/strong\u003e Single platinum center tip, 0.6 mm fine-wire center electrode and trapezoidal ground electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal construction:\u003c\/strong\u003e 98% pure copper core and high-grade alumina silicate ceramic insulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete quantity:\u003c\/strong\u003e Two four-packs provide eight matching plugs; select order quantity one to service one V8.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Spark plugs only. Ignition coils, plug wires and installation tools are separate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBenefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocused ignition:\u003c\/strong\u003e The fine-wire platinum tip supports ignitability during normal combustion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced flame quenching:\u003c\/strong\u003e The ground-electrode shape helps limit interference with the flame as it starts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat management:\u003c\/strong\u003e A copper core helps dissipate firing-end heat; ceramic insulation supports electrical isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne complete service set:\u003c\/strong\u003e Replace all eight plugs together in your coupe, convertible or Fixed Roof Coupe, with the correct quantity already grouped for the job.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody-style years:\u003c\/strong\u003e Match your LS1 coupe to 1997–2004, convertible to 1998–2004, or Fixed Roof Coupe to 1999–2000. Those body-style dates keep the service set matched to your C5.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed Roof Coupe selection:\u003c\/strong\u003e A 1999–2000 FRC retains the 5.7L LS1 fitment covered here. Confirm the engine in the car when ordering, especially if its service history includes an engine replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication gap:\u003c\/strong\u003e Use \u003cstrong\u003e0.040 inch (1.02 mm)\u003c\/strong\u003e for this stock LS1 fitment. Check each plug before fitting it; the factory setting is not assumed to match the required engine gap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine-wire care:\u003c\/strong\u003e Measure with a round-wire or pin gauge. If adjustment is needed, move only the ground electrode without levering against the platinum center tip or ceramic insulator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Fit clean, dry threads without anti-seize and follow the vehicle torque specification. Have your engine builder confirm requirements for a modified engine before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #ff0000;\"\u003eCORVETTE COMPATIBILITY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1997–2004 C5 Corvette LS1 coupe\u003c\/li\u003e\n\u003cli\u003e1998–2004 C5 Corvette LS1 convertible\u003c\/li\u003e\n\u003cli\u003e1999–2000 C5 Corvette LS1 Fixed Roof Coupe\u003c\/li\u003e\n\u003cli\u003eLS1 5.7L V8, stock configuration\u003c\/li\u003e\n\u003cli\u003eManual and automatic transmissions; FRC manual\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 3186 TR5GP G-Power platinum spark plugs\u003c\/strong\u003e for your C5 Corvette LS1? Contact us for personal help before you order.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":67729714446573,"sku":"3186","price":52.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1359\/4413\/files\/ngk-g-power-platinum-spark-plug-full-view.png?v=1791816200","url":"https:\/\/www.corvettepartsandaccessories.com\/products\/c5-corvette-ngk-g-power-spark-plugs-ls1","provider":"Corvette Parts from Custom Corvette Accessories","version":"1.0","type":"link"}