{"product_id":"ngk-4589-laser-iridium-spark-plugs-ifr6t11-4-pack-compatible-with-toyota-lexus-lotus-mazda-pontiac-scion-daewoo-1990-2012","title":"NGK 4589 Laser Iridium Spark Plugs IFR6T11 4 Pack – Compatible with Toyota, Lexus, Lotus, Mazda, Pontiac, Scion \u0026 Daewoo (1990–2012)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMeet the NGK 4589 Laser Iridium spark plugs, a four‑pack designed to support OE‑level ignition for a broad mix of engines from the 1990s to early 2010s. Built by NGK, a renowned OEM spark plug maker, these plugs pair a resilient iridium tip with a copper core and robust ceramic insulation to support reliable starts and steady performance across many vehicle families. While individual results vary with condition and maintenance, this 4‑pack offers a practical, shop‑tested option for routine service or preventive replacement.\u003c\/p\u003e\n\u003ch2\u003eWide compatibility for many models\u003c\/h2\u003e\n\u003cp\u003eThe IFR6T11 plugs are suitable for a wide array of vehicles, spanning Daewoo, Lexus, Lotus, Mazda, Pontiac, Scion, and Toyota applications. Notable fitment spans Daewoo Lanos 1.6L (1999–2002), Lexus HS250h 2.4L (2010–2012), Lotus Elan 1.6L (1991), Mazda Miata 1.6L (1990–1993), Pontiac Vibe 1.8L (2003–2006) and 2.4L (2009–2010), Scion tC 2.4L (2005–2010) and xB 2.4L (2008–2012), plus a broad set of Toyota engines including Camry, Corolla, RAV4, Solara, Matrix, MR2, and Previa. Always verify the exact part number against your vehicle’s manual or NGK guidance before purchasing.\u003c\/p\u003e\n\u003ch2\u003eCore benefits and what makes them stand out\u003c\/h2\u003e\n\u003cp\u003eThese are Laser Iridium plugs, designed for durability and consistent performance in OE‑like conditions. The iridium tipped center electrode and fine‑wire design offer longevity, while the durable ceramic insulator helps manage heat and maintain stable operation. A platinum pad on the ground electrode supports even wear in distributorless ignition systems, contributing to balanced combustion across a wide range of engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium tipped center electrode with copper core for durability and efficient sparks\u003c\/li\u003e\n  \u003cli\u003eHigh‑quality ceramic insulator with strong heat resistance\u003c\/li\u003e\n  \u003cli\u003ePlatinum pad on the ground electrode fosters even wear\u003c\/li\u003e\n  \u003cli\u003eResistor type included to reduce electrical noise\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey specs at a glance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eThread diameter: 14.0 mm (0.551 in)\u003c\/li\u003e\n  \u003cli\u003eReach: 19.0 mm (0.750 in)\u003c\/li\u003e\n  \u003cli\u003ePre‑gap: 1.1 mm (0.044 in)\u003c\/li\u003e\n  \u003cli\u003eHex size: 16 mm (5\/8 in)\u003c\/li\u003e\n  \u003cli\u003eInsulator height: 50.5 mm (1.99 in)\u003c\/li\u003e\n  \u003cli\u003eHeat range: 6\u003c\/li\u003e\n  \u003cli\u003eResistor: Yes\u003c\/li\u003e\n  \u003cli\u003eStock number: 4589; Part number: IFR6T11\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat you get\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFour NGK IFR6T11 Laser Iridium spark plugs (part 4589)\u003c\/li\u003e\n  \u003cli\u003eCrush washers included for secure sealing\u003c\/li\u003e\n  \u003cli\u003eOE‑style ground configuration and robust copper\/iridium construction\u003c\/li\u003e\n\u003c\/ul\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: Does NGK 4589 fit all listed models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits select Toyota, Daewoo, Lexus, Lotus, Mazda, Pontiac, and Scion models from 1990–2012; verify compatibility with your vehicle's manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What potential benefits can I expect from NGK Laser Iridium plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Potentially steadier starts and durable performance due to iridium tip, copper core, and ceramic insulation; results vary by engine condition.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":42470962593877,"sku":"B00IYBU8VI","price":58.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/ngk-4589-laser-iridium-spark-plug.jpg?v=1778157896","url":"https:\/\/plentytorque.co.uk\/products\/ngk-4589-laser-iridium-spark-plugs-ifr6t11-4-pack-compatible-with-toyota-lexus-lotus-mazda-pontiac-scion-daewoo-1990-2012","provider":"PlentyTorque","version":"1.0","type":"link"}