{"product_id":"ngk-iridium-spark-plugs-zfr5fix-11-4-pack-oem-grade-fine-iridium-electrode-for-long-life","title":"NGK Iridium Spark Plugs ZFR5FIX-11 — 4-Pack OEM-Grade, Fine Iridium Electrode for Long Life","description":"\u003cp\u003e\u003cstrong\u003eNGK 2477 Iridium spark plugs (ZFR5FIX-11) are a four-pack of OEM-grade ignition plugs engineered for long life and consistent combustion performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese NGK iridium plugs are commonly selected by vehicle manufacturers and mechanics when a reliable replacement that matches original equipment specifications is required. Built with a fine iridium center electrode and high-quality construction, they balance durability and efficient spark delivery for a wide range of gasoline engines. Before ordering, verify fitment on NGK's application guide to confirm compatibility with your engine, drivetrain and the number of plugs required.\u003c\/p\u003e\n\n\u003ch3\u003eHow do NGK ZFR5FIX-11 plugs differ from standard plugs?\u003c\/h3\u003e\n\u003cp\u003eIridium alloys in the center electrode use a harder, finer tip than conventional copper or nickel plugs. That finer tip concentrates the electrical discharge, which helps ignition stability and can support a steadier idle and throttle response without changing engine management.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine iridium center electrode for focused spark\u003c\/li\u003e\n  \u003cli\u003eDurable construction for extended service intervals\u003c\/li\u003e\n  \u003cli\u003eOEM-spec thread, seat and heat range for direct replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these NGK plugs fit my vehicle and how should I check?\u003c\/h3\u003e\n\u003cp\u003eNGK supplies worldwide application data to ensure you select the correct part number for your make and model. Match the ZFR5FIX-11 designation against your vehicle’s required plug code and confirm engine specifics such as thread size, reach and heat range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConsult NGK’s online application chart or dealer database\u003c\/li\u003e\n  \u003cli\u003eVerify thread pitch, hex size and reach match your engine\u003c\/li\u003e\n  \u003cli\u003eConfirm required quantity—this listing contains four plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the practical benefits of choosing NGK iridium plugs?\u003c\/h3\u003e\n\u003cp\u003eChoosing NGK iridium plugs means opting for a product designed for steady ignition and longevity. Their construction reduces electrode wear and resists deposits, which can help maintain consistent combustion characteristics between service intervals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLonger electrode life compared with standard materials\u003c\/li\u003e\n  \u003cli\u003eConsistent spark performance under varied driving conditions\u003c\/li\u003e\n  \u003cli\u003eManufacturing standards aligned with OEM quality expectations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and maintain these spark plugs?\u003c\/h3\u003e\n\u003cp\u003eInstall using a torque wrench to the vehicle manufacturer’s torque specification to avoid damage to the thread or gasket. Periodic inspection during scheduled maintenance helps confirm condition, and replacement intervals depend on driving habits and engine conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse correct torque and anti-seize guidance from NGK or your vehicle manual\u003c\/li\u003e\n  \u003cli\u003eInspect spark plug condition during routine service checks\u003c\/li\u003e\n  \u003cli\u003eReplace as recommended by engine manufacturer or if wear\/damage appears\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Mechanics, DIY enthusiasts and vehicle owners seeking a direct-replacement spark plug that mirrors OEM specifications will appreciate the NGK 2477 ZFR5FIX-11. It’s targeted at drivers who want a durable ignition component with proven OEM pedigree and those replacing multiple plugs at once—this listing supplies a set of four for vehicles that require that quantity.\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: Are NGK ZFR5FIX-11 plugs pre-gapped?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They are typically pre-gapped to NGK factory specs, but always check and adjust gap to your vehicle manufacturer’s recommendation before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many spark plugs come in this listing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This listing includes four NGK ZFR5FIX-11 iridium spark plugs, suitable for vehicles that require a set of four.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":48082987122846,"sku":"B00IOFBNAY","price":53.38,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ngk-front-packaging_03ccbeeb-f681-49fb-8274-990ae3090a7b.jpg?v=1785821857","url":"https:\/\/northtrailauto.ca\/products\/ngk-iridium-spark-plugs-zfr5fix-11-4-pack-oem-grade-fine-iridium-electrode-for-long-life","provider":"North Trail Auto","version":"1.0","type":"link"}