{"product_id":"sixity-auto-ngk-iridium-ix-spark-plugs-for-chevrolet-silverado-1500-2014-2020-8-piece-set-long-life-iridium","title":"Sixity Auto NGK Iridium IX Spark Plugs for Chevrolet Silverado 1500 2014-2020 — 8‑Piece Set, Long-Life Iridium","description":"\u003cp\u003e\u003cstrong\u003eThese are eight genuine NGK Iridium IX spark plugs designed to replace worn plugs on Chevrolet Silverado 1500 models from 2014 through 2020, improving ignition consistency and longevity.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSwap in this complete set of NGK Iridium IX plugs when you want a like-for-like OE-quality replacement engineered for strong, focused sparks and reduced gap wear. Built with corrosion-resistant materials and ultra-fine iridium center electrodes, these plugs are a long-lived option for V6 and V8 Silverado engines that originally used NGK specifications. The kit includes eight plugs so you can service all cylinders at once and restore uniform firing across the engine.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these NGK Iridium IX plugs affect everyday driving?\u003c\/h3\u003e\n\u003cp\u003eIridium center electrodes produce concentrated sparks that help the air\/fuel mixture ignite more completely than older-style plugs. Drivers typically notice smoother starts, steadier idling, and more consistent acceleration under load. Improved ignition focus can also reduce occasional misfires that occur with worn plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSharper spark for cleaner combustion and steadier throttle response\u003c\/li\u003e\n  \u003cli\u003eDurable electrodes resist gap erosion for extended service life\u003c\/li\u003e\n  \u003cli\u003eFull eight-plug set ensures balanced cylinder performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill installing these plugs change fuel economy or emissions?\u003c\/h3\u003e\n\u003cp\u003eReplacing degraded plugs with NGK Iridium IX helps the engine burn fuel more completely, which can lead to modest fuel-efficiency improvements and fewer unburned hydrocarbons. While not a guaranteed fuel-economy upgrade, fresh plugs remove a common source of inefficiency and misfire-related emissions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBetter combustion can lower short-term fuel waste and emissions\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant shells help maintain stable gaps and ignition\u003c\/li\u003e\n  \u003cli\u003eOEM-grade fit and heat range for correct engine operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these plugs compatible with my Silverado 1500 and easy to install?\u003c\/h3\u003e\n\u003cp\u003eThese NGK Iridium IX plugs correspond to factory specifications for Chevrolet Silverado 1500 models built from 2014 to 2020. Installation requires basic engine access and the proper spark plug socket; follow torque and gap recommendations for your engine variant. If you prefer, a professional mechanic can complete the swap quickly during routine maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Silverado 1500 model years 2014–2020 per NGK specs\u003c\/li\u003e\n  \u003cli\u003eSold as an eight-piece kit to service all cylinders at once\u003c\/li\u003e\n  \u003cli\u003eInstall with correct torque and anti-seize guidance for best results\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long do NGK Iridium IX plugs typically last in a Silverado?\u003c\/h3\u003e\n\u003cp\u003eIridium-tipped plugs last significantly longer than conventional plugs due to the material’s hardness and resistance to electrode wear. Lifespan varies with driving conditions and engine tune, but these plugs commonly reach high-mileage service intervals before replacement is needed. Regular inspection during tune-ups will reveal when gaps begin to widen or ignition problems reappear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium center electrode reduces gap growth over time\u003c\/li\u003e\n  \u003cli\u003eExpected longer service life versus standard nickel plugs\u003c\/li\u003e\n  \u003cli\u003eUseful to replace all eight simultaneously for consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This eight-plug NGK Iridium IX set is intended for Chevrolet Silverado 1500 owners (2014–2020) who want OE-quality replacement parts that prioritize reliable ignition, longer electrode life, and restored engine smoothness. It’s a fit for DIYers who perform scheduled maintenance and for service shops seeking an industry-leading plug for routine tune-ups.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these NGK Iridium IX plugs fit all Silverado 1500 engines between 2014 and 2020?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — this eight-piece NGK Iridium IX set matches the factory specifications used on Chevrolet Silverado 1500 models from 2014 through 2020. Verify part number compatibility for specific engine variants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace these iridium spark plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Iridium plugs generally last much longer than standard plugs; inspect at routine service intervals and expect extended mileage before replacement, depending on driving conditions and engine tune.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Sixity Auto","offers":[{"title":"Default Title","offer_id":48081431462046,"sku":"B0B7KQM7WF","price":119.93,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/sixity-auto-ngk-iridium-ix-front-packaging_f03f181a-8480-4f23-b02f-efd1534e705f.jpg?v=1785804112","url":"https:\/\/northtrailauto.ca\/products\/sixity-auto-ngk-iridium-ix-spark-plugs-for-chevrolet-silverado-1500-2014-2020-8-piece-set-long-life-iridium","provider":"North Trail Auto","version":"1.0","type":"link"}