{"product_id":"denso-iridium-spark-plugs-sk16hr11-6-pack-long-life-fine-tip-oem-fit","title":"Denso Iridium Spark Plugs SK16HR11 (6-Pack) Long-Life Fine-Tip OEM Fit","description":"\u003cp\u003e\u003cstrong\u003eDenso 3417 (SK16HR11) iridium spark plugs — a 6-piece set engineered for longer service life and consistent ignition performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis listing contains one genuine Denso 3417 spark plug pack with six SK16HR11 iridium electrodes. Built for reliable combustion and extended durability, these plugs are made to meet OEM fit and function standards. They suit scheduled maintenance or full-plug replacement when you want a direct-fit, high-quality ignition component without aftermarket guessing.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these Denso plugs differ from standard copper or nickel plugs?\u003c\/h3\u003e\n\u003cp\u003eIridium is a much harder, higher-melting-point metal than copper or nickel, which lets Denso produce a much finer central electrode. A thinner electrode creates a more focused spark path, improving ignition reliability across operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium center electrode for stable spark and longer wear\u003c\/li\u003e\n  \u003cli\u003eFine-tipped design reduces voltage demand from ignition coils\u003c\/li\u003e\n  \u003cli\u003eRobust construction resists erosion and maintains gap tolerance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these spark plugs fit my vehicle and are they direct replacements?\u003c\/h3\u003e\n\u003cp\u003eThe Denso 3417 is manufactured to the SK16HR11 specification, commonly used as a direct-fit replacement for applications calling for that code. Check your owner’s manual or parts guide for SK16HR11 compatibility to confirm fit, thread size, and reach before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSKU: Denso 3417 — part code SK16HR11\u003c\/li\u003e\n  \u003cli\u003eSold as a 6-piece set for complete-bank service\u003c\/li\u003e\n  \u003cli\u003eMeets Denso OEM fitment standards for listed applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can I expect these iridium plugs to last under normal driving?\u003c\/h3\u003e\n\u003cp\u003eIridium plugs are designed for extended service intervals compared with conventional plugs, often lasting tens of thousands of miles when installed and gapped correctly. Actual life depends on engine condition, driving habits, and maintenance practices like proper torque and heat-range selection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLonger electrode life versus copper\/nickel alternatives\u003c\/li\u003e\n  \u003cli\u003eConsistent performance across varied operating temperatures\u003c\/li\u003e\n  \u003cli\u003eReplace based on manufacturer interval or when symptoms appear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation tips should I follow to get the best results?\u003c\/h3\u003e\n\u003cp\u003eProper installation preserves plug life and engine performance: use a torque wrench to the vehicle maker’s specification, verify the gap if required, and apply anti-seize only where recommended. Avoid cross-threading and handle the ceramic insulator carefully to prevent cracks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTorque to factory spec to protect threads and ensure sealing\u003c\/li\u003e\n  \u003cli\u003eInspect gap only if specified; Denso often ships correctly gapped\u003c\/li\u003e\n  \u003cli\u003eReplace all plugs in the bank for uniform performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Technicians, DIY enthusiasts, and vehicle owners seeking a dependable, OEM-quality iridium spark plug replacement. The Denso 3417 (SK16HR11) 6-pack suits routine maintenance, full-engine plug changes, or anyone upgrading from standard plugs to extend service intervals and maintain reliable ignition performance.\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: Is the Denso 3417 (SK16HR11) a direct-fit for my car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your vehicle specifies SK16HR11 or an equivalent Denso 3417, it is a direct-fit. Verify with the owner’s manual or parts lookup before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many spark plugs are included in this purchase?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This listing includes six genuine Denso 3417 (SK16HR11) iridium spark plugs—one full 6-piece set.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":55170933948759,"sku":"B00UKIQQ7I","price":88.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/denso-3417-spark-plug-front-packaging.jpg?v=1790435348","url":"https:\/\/britishgarage.co.uk\/products\/denso-iridium-spark-plugs-sk16hr11-6-pack-long-life-fine-tip-oem-fit","provider":"British Garage","version":"1.0","type":"link"}