{"product_id":"ifatrunk-iridium-spark-plugs-for-toyota-nissan-mitsubishi-4-pack-0-4-0-6mm-iridium-laser-welded-durability","title":"IFATRUNK Iridium Spark Plugs for Toyota Nissan Mitsubishi — 4-Pack, 0.4–0.6mm Iridium \u0026 Laser-Welded Durability","description":"\u003cstrong\u003eIFATRUNK Iridium Spark Plugs 4PCS are premium laser-welded iridium plugs engineered to deliver precise ignition, long electrode life, and broad compatibility with many Toyota, Nissan, Mitsubishi and Scion four-cylinder engines.\u003c\/strong\u003e\n\nThese replacement spark plugs are designed as direct-fit alternatives for part numbers such as 5464 and BKR5EIX-11 and cover a long list of model-year applications across Corolla, Prius, Tacoma, Yaris, Altima, Frontier, Outlander, Lancer, Eclipse, Scion xB, Pontiac Vibe and more. Constructed with a 0.4–0.6 mm iridium central electrode and laser welding for durability, they concentrate spark energy to support reliable starts, steadier idling, and efficient combustion under a variety of driving conditions.\n\n\u003ch3\u003eWhat makes IFATRUNK iridium electrodes stand out for daily driving?\u003c\/h3\u003e\n\u003cp\u003eThe iridium alloy center electrode is much finer than standard nickel tips, which focuses the spark for more consistent ignition and reduces wear. Laser welding secures the small electrode to resist thermal and electrical stress common in modern engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e0.4–0.6 mm iridium center for concentrated spark delivery\u003c\/li\u003e\n  \u003cli\u003eLaser-welded joint for improved longevity and reliability\u003c\/li\u003e\n  \u003cli\u003eDesigned to tolerate thermal cycling and electrode erosion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will these plugs affect starting, fuel use, and throttle response?\u003c\/h3\u003e\n\u003cp\u003eThe concentrated spark improves initial combustion, which can help with cold starts, smoother throttle transitions, and more complete fuel burn. While individual results vary by vehicle and tune, iridium plugs often enable steadier idle and better throttle response compared with older, worn plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMore reliable ignition at low temperatures and lean mixtures\u003c\/li\u003e\n  \u003cli\u003ePotential for reduced unburned fuel and steadier idle\u003c\/li\u003e\n  \u003cli\u003eHelps maintain consistent performance at varied engine loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and part numbers are covered by this four-pack?\u003c\/h3\u003e\n\u003cp\u003eThis set replaces numerous OEM and aftermarket references and fits many 4-cylinder models across Toyota, Nissan, Mitsubishi, Scion and Pontiac from the 1990s through more recent model years. Check the compatibility list against your vehicle’s year, engine size and factory part number to confirm fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces references like 5464, BKR5EIX-11 and IFR5E11 among others\u003c\/li\u003e\n  \u003cli\u003eFits Toyota Corolla, Prius, Tacoma, Yaris, Matrix and Celica variants\u003c\/li\u003e\n  \u003cli\u003eCompatible with Nissan Altima, Frontier, Sentra, Xterra and related models\u003c\/li\u003e\n  \u003cli\u003eAlso fits many Mitsubishi Lancer, Outlander, Eclipse models and Scion xB, Pontiac Vibe\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and maintain these spark plugs?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows the same basic procedure as OEM plugs: confirm gap where applicable, torque to the vehicle manufacturer’s specification, and replace one cylinder at a time to avoid mix-ups. Because of their durable iridium tip, these plugs require less frequent replacement than standard plugs but still benefit from periodic inspection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify plug gap if your vehicle specifies an offset gap\u003c\/li\u003e\n  \u003cli\u003eTighten to factory torque values to avoid damage\u003c\/li\u003e\n  \u003cli\u003eInspect boots and ignition leads when replacing plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for\n\nThese IFATRUNK iridium spark plugs are aimed at DIY mechanics and professional technicians who need a cost-effective, long-life replacement for worn plugs in mid- and late-model compact and mid-size four-cylinder vehicles. They are suitable for owners who want improved ignition consistency and reduced maintenance frequency without changing ignition timing, fuel maps, or other engine hardware. If you need a direct-fit iridium solution that matches many OEM reference numbers and a wide compatibility list, this 4-pack offers a practical upgrade backed by customer support for any fitment questions.\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 IFATRUNK plugs replace BKR5EIX-11?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. These IFATRUNK iridium plugs are listed as replacements for BKR5EIX-11 and several equivalent reference numbers—verify fit by engine and year first.\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 typically last longer than nickel ones; expect extended intervals, but follow your vehicle manufacturer's maintenance schedule and inspect periodically.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"IFATRUNK","offers":[{"title":"Default Title","offer_id":67592996618425,"sku":"B0FDR6PPD4","price":56.46,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ifatrunk-front-packaging_de9f4b1f-b095-4021-881f-d928ffacb8cf.jpg?v=1790570822","url":"https:\/\/redleafauto.ca\/products\/ifatrunk-iridium-spark-plugs-for-toyota-nissan-mitsubishi-4-pack-0-4-0-6mm-iridium-laser-welded-durability","provider":"Redleaf Auto","version":"1.0","type":"link"}