{"product_id":"ifatrunk-iridium-spark-plugs-6-pack-3-1l-4-3l-v6-replacement-plugs-laser-welded-iridium-tips","title":"IFATRUNK Iridium Spark Plugs 6 Pack — 3.1L–4.3L V6 Replacement Plugs, Laser-Welded Iridium Tips","description":"\u003cp\u003e\u003cstrong\u003eIFATRUNK Iridium Spark Plugs 6 Pack: high-strength iridium electrodes designed to deliver focused ignition and long service life for 3.1L–4.3L V6 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese replacement spark plugs are engineered to match OEM fitment for many GM and Ford V6 models and a variety of other vehicles. Each plug uses a fine iridium central electrode welded by laser for improved wear resistance and a more concentrated spark, and the set replaces reference numbers such as 7164 and TR55IX. The pack includes six plugs, ideal for full-banked V6 engines, and is backed by IFATRUNK customer support should you need assistance with installation or compatibility.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines will these spark plugs fit?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are compatible with a broad range of GM and Ford V6 applications from late 1980s through the 2010s, plus select Mazda and Mercury models. Compatibility covers 3.0L to 4.3L V6 engines commonly found in Silverado, Sierra, Express, Impala, Buick, Pontiac, Explorer, Mustang, Escape and others. Always verify your engine code and OEM reference numbers before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces reference numbers: 7164, TR55IX, 3951, TR55, 3403, TR55GP\u003c\/li\u003e\n  \u003cli\u003eCovers Chevrolet, GMC V6s: 4.3L and 3.4L variants (1996–2013 ranges)\u003c\/li\u003e\n  \u003cli\u003eIncludes many Buick, Pontiac, Cadillac V6 models (3.1L–3.8L)\u003c\/li\u003e\n  \u003cli\u003eFits Ford and Mazda V6 models like Explorer, Mustang, Escape, Tribute\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do iridium electrodes affect ignition and longevity?\u003c\/h3\u003e\n\u003cp\u003eIridium is used because it allows a much smaller, harder electrode tip that resists erosion and concentrates ignition energy. A thinner central electrode yields a more focused spark, which helps deliver consistent combustion over a longer service interval than standard copper tips. Laser welding secures the alloy to the core for improved durability under thermal and electrical stress.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e0.4–0.6 mm iridium central electrode for focused spark\u003c\/li\u003e\n  \u003cli\u003eLaser-welded construction to reduce tip degradation\u003c\/li\u003e\n  \u003cli\u003eDesigned to tolerate higher thermal and electrical loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these spark plugs help with cold starts or fuel efficiency?\u003c\/h3\u003e\n\u003cp\u003eWhile no spark plug can guarantee specific fuel savings, iridium tips help produce a stable, concentrated spark that supports reliable ignition in cold starts and lean-burn conditions. That stability can reduce misfires and uneven combustion, which often translates to smoother startup behavior and steady running. Real-world fuel impact depends on overall engine condition and tuning.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproved ignition stability in low-temperature starts\u003c\/li\u003e\n  \u003cli\u003eBetter performance with leaner air–fuel mixtures\u003c\/li\u003e\n  \u003cli\u003eCan reduce misfires that waste fuel when engine is out of tune\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard spark plug replacement procedures: check correct gap (if applicable), torque to manufacturer specification, and replace in matched sets when servicing an entire bank. Use a torque wrench and anti-seize only if recommended by vehicle manufacturer. If you experience fitment or performance questions, IFATRUNK customer support is available to help.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePack quantity: 6 pieces — enough for most V6 banks\u003c\/li\u003e\n  \u003cli\u003eVerify OEM reference numbers and engine size before installation\u003c\/li\u003e\n  \u003cli\u003eFollow manufacturer torque settings; inspect ignition coils\/wires\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: IFATRUNK's Iridium Spark Plugs 6 Pack is aimed at DIY mechanics, professional technicians, and vehicle owners who need OEM-compatible replacements for V6 engines in Chevy, GMC, Buick, Pontiac, Ford, Mazda and related models from the 1990s through early 2010s. Choose these plugs if you want a long-lasting iridium tip, reliable ignition under varied conditions, and a full six-plug set for a complete bank replacement. If you're unsure about fitment, compare the listed reference numbers and vehicle years or contact IFATRUNK support for guidance.\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 7164 \/ TR55IX?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. IFATRUNK plugs are compatible replacements for 7164 and TR55IX reference numbers listed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many plugs are included and for which engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This pack includes six plugs, suitable for many 3.1L–4.3L V6 engines; verify fit with your vehicle year and engine code.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"IFATRUNK","offers":[{"title":"Default Title","offer_id":48085041741982,"sku":"B0FDR8HGHW","price":37.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ifatrunk-front-packaging_ad05d829-d221-4ab2-8581-19d38d8672f0.jpg?v=1785867222","url":"https:\/\/northtrailauto.ca\/products\/ifatrunk-iridium-spark-plugs-6-pack-3-1l-4-3l-v6-replacement-plugs-laser-welded-iridium-tips","provider":"North Trail Auto","version":"1.0","type":"link"}