{"product_id":"denso-iridium-long-life-spark-plugs-sk16r11-3324-4-pack-durable-iridium-tips-for-stable-ignition","title":"Denso Iridium Long Life Spark Plugs SK16R11 (3324) — 4‑Pack, Durable Iridium Tips for Stable Ignition","description":"\u003cp\u003e\u003cstrong\u003eDENSO SK16R11 Iridium Long Life spark plugs — a genuine 4-pack replacement designed to restore reliable ignition performance and extended service life.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese DENSO 3324 (SK16R11) iridium spark plugs come as an authentic four-piece set intended for direct-fit replacement in compatible engines. Built using DENSO’s iridium tip technology and manufactured to original-equipment specifications, they offer consistent spark delivery and corrosion-resistant construction. The package includes original packaging and the correct hardware to simplify installation; always verify vehicle compatibility with your fitment tool before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these spark plugs improve ignition reliability?\u003c\/h3\u003e\n\n\u003cp\u003eDenso’s iridium tip provides a precise, durable electrode that requires less voltage to fire and resists wear compared with standard nickel plugs. That steadier spark timing helps maintain smooth starts and consistent combustion across operating conditions.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFine iridium center electrode for consistent spark formation\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant materials to preserve contact quality\u003c\/li\u003e\n  \u003cli\u003eStable gap retention reduces misfires over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these plugs fit my vehicle and how do I confirm compatibility?\u003c\/h3\u003e\n\n\u003cp\u003eThe SKU SK16R11 corresponds to DENSO part number 3324 and fits vehicles specified by that OE cross-reference. Compatibility depends on make, model, engine code and year, so check your vehicle’s service manual or use the retailer’s fitment\/vehicle compatibility tool before ordering.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePart number: DENSO 3324 (SK16R11)\u003c\/li\u003e\n  \u003cli\u003eSold as a 4-piece genuine DENSO replacement pack\u003c\/li\u003e\n  \u003cli\u003eConfirm fitment via online fitment tool or dealer reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can I expect these iridium plugs to last?\u003c\/h3\u003e\n\n\u003cp\u003eIridium electrodes typically outlast conventional plugs due to their hardness and higher melting point, giving longer service intervals under normal driving conditions. Actual lifespan depends on driving habits, engine condition, and maintenance, but iridium plugs commonly provide extended mileage before a replacement is needed.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDurable iridium tip for extended service life\u003c\/li\u003e\n  \u003cli\u003eBetter gap stability compared with standard plugs\u003c\/li\u003e\n  \u003cli\u003eReplace according to vehicle manufacturer guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the package and is installation straightforward?\u003c\/h3\u003e\n\n\u003cp\u003eThis listing contains a genuine DENSO four-pack (4 PCS) of SK16R11 spark plugs, shipped in original packaging with necessary hardware. Installation is direct-replacement for compatible engines; basic hand tools and torque specifications are required, or have a qualified technician perform the swap if unsure.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncludes four DENSO 3324 (SK16R11) spark plugs in original packaging\u003c\/li\u003e\n  \u003cli\u003eIncludes required sealing\/insulator hardware when applicable\u003c\/li\u003e\n  \u003cli\u003eDirect replacement — follow torque specs and gap settings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This DENSO 4-pack is aimed at vehicle owners and professional mechanics seeking authentic OEM-quality iridium spark plugs for routine maintenance or performance restoration. It’s suitable for drivers who prefer longer service intervals and consistent ignition performance, and for anyone replacing all cylinders during a tune-up to maintain even combustion across the engine.\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 these DENSO SK16R11 spark plugs genuine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — this listing is for genuine DENSO 3324 SK16R11 spark plugs sold as a new four-pack in original packaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to install them?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Basic hand tools and a torque wrench are recommended; consult vehicle specs or have a mechanic install them if unsure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":48083141066910,"sku":"B00LVBZMFU","price":58.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/denso-spark-plug-front-packaging-sk16r11.jpg?v=1785826300","url":"https:\/\/northtrailauto.ca\/products\/denso-iridium-long-life-spark-plugs-sk16r11-3324-4-pack-durable-iridium-tips-for-stable-ignition","provider":"North Trail Auto","version":"1.0","type":"link"}