{"product_id":"ifatrunk-iridium-spark-plugs-6-pack-for-nissan-infiniti-toyota-v6-2-7l-4-0l-laser-welded-iridium-tip-oe-fit","title":"IFATRUNK Iridium Spark Plugs 6-Pack for Nissan\/Infiniti\/Toyota V6 2.7L–4.0L — Laser-Welded Iridium Tip, OE Fit","description":"\u003cstrong\u003eThese IFATRUNK iridium spark plugs are a six-pack replacement designed to restore reliable ignition and long service life for many Nissan, Infiniti, Toyota, Kia and Hyundai V6 engines.\u003c\/strong\u003e\n\n\u003cp\u003eIf your V6 is running rough, using more fuel, or you’re following a scheduled tune-up, swapping in a set of high-grade iridium plugs can reduce misfires and improve throttle response. This 6-pack matches OE thread and heat-range references (replaces 4469, LFR5AIX11 and related numbers) and suits a wide range of 2.7L–4.0L engines from Nissan, Infiniti, Toyota, Kia and Hyundai. Each plug uses a laser-welded iridium center electrode engineered for narrower diameter, more focused spark and better wear resistance than conventional electrodes.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines will these plugs fit?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are intended as direct-fit replacements for many V6 models built in the 2000s and 2010s. Compatibility covers multiple Nissan\/Infiniti V6 platforms (3.5L and 4.0L) and selected Toyota, Kia and Hyundai V6 engines listed by year and displacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2003–2006 Nissan 350Z 3.5L, 2002–2006 Altima 3.5L, 2002–2008 Maxima 3.5L\u003c\/li\u003e\n  \u003cli\u003e2005–2019 Nissan Frontier 4.0L, 2005–2012 Pathfinder 4.0L, 2005–2015 Xterra 4.0L\u003c\/li\u003e\n  \u003cli\u003eInfiniti G35\/FX35\/M35\/I35 models with 3.5L V6 where specified\u003c\/li\u003e\n  \u003cli\u003eSelected Toyota 4Runner and Tundra 4.0L, Kia Optima\/Rondo 2.7L, Hyundai Santa Fe\/Genesis variants\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does iridium construction affect performance and durability?\u003c\/h3\u003e\n\u003cp\u003eIridium is used for a finer center electrode diameter, which concentrates spark energy and helps ensure more consistent ignition across conditions. The laser-welded iridium tip resists thermal and electrical erosion better than traditional nickel tips, extending service intervals under typical driving.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e0.4–0.6 mm iridium center for a precise, strong spark\u003c\/li\u003e\n  \u003cli\u003eLaser-welded joint to resist electrode wear and fouling\u003c\/li\u003e\n  \u003cli\u003eImproved cold starts, stable idling and steadier high-rpm ignition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect when I install these plugs?\u003c\/h3\u003e\n\u003cp\u003eAfter proper installation and gap verification, expect smoother idle, crisper throttle response and fewer misfires compared with worn plugs. Fuel efficiency gains are possible when plugs restore efficient combustion, though exact results depend on engine condition and driving style.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplace in sets of six for consistent cylinder performance\u003c\/li\u003e\n  \u003cli\u003eVerify gap and torque to OEM specs before final tightening\u003c\/li\u003e\n  \u003cli\u003ePair with fresh ignition coils\/wires when diagnosing persistent issues\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these plugs easy to install at home?\u003c\/h3\u003e\n\u003cp\u003eYes — installation is straightforward for anyone comfortable with basic engine maintenance, but follow safety and torque guidelines. Use a torque wrench and the correct socket, and check the vehicle service manual for gap\/tightening values and removal sequence.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHand-tighten then torque to manufacturer recommendation\u003c\/li\u003e\n  \u003cli\u003eInspect threads and apply anti-seize only if manufacturer permits\u003c\/li\u003e\n  \u003cli\u003eReplace coils or boots if they show wear to avoid cross-fire\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This IFATRUNK 6-pack is aimed at DIY mechanics and professional technicians working on mid-2000s to 2010s V6 Nissan and Infiniti vehicles, plus select Toyota, Kia and Hyundai V6 models. Choose these plugs if you want a cost-effective iridium upgrade that matches common OE references (4469, LFR5AIX11 and equivalents) and delivers long-lasting spark performance for routine tune-ups and repairs.\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 plugs replace part number 4469?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. These IFATRUNK plugs are listed as compatible replacements for 4469\/LFR5AIX11 and equivalent OE references.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Should I check the gap before installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Always confirm and adjust the gap to your vehicle's service specifications before final installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"IFATRUNK","offers":[{"title":"Default Title","offer_id":48085041643678,"sku":"B0FDR77H3R","price":37.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ifatrunk-front-packaging.jpg?v=1785867221","url":"https:\/\/northtrailauto.ca\/products\/ifatrunk-iridium-spark-plugs-6-pack-for-nissan-infiniti-toyota-v6-2-7l-4-0l-laser-welded-iridium-tip-oe-fit","provider":"North Trail Auto","version":"1.0","type":"link"}