{"product_id":"denso-iridium-twin-tip-spark-plug-4702-0-4mm-center-electrode-long-life-performance","title":"Denso Iridium Twin‑Tip Spark Plug 4702 — 0.4mm Centre Electrode, Long‑Life Performance","description":"\u003cp\u003e\u003cstrong\u003eThe Denso 4702 is an iridium Twin-Tip spark plug engineered for long life, sharper ignition and better fuel economy without altering your engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned using Denso’s iridium and platinum materials plus a 360-degree laser weld, the 4702 delivers exceptional durability and consistent spark performance. Its Twin-Tip (TT) design uses an ultra-fine 0.4 mm iridium center electrode and a 0.7 mm needle ground electrode to concentrate spark energy, boosting ignitability for smoother starts, improved throttle response and optimized combustion. Built with vehicle-specific fitment and precision manufacturing, these plugs are intended as direct replacements for compatible engines that require high-performance, long-life spark plugs.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this spark plug improve engine response and acceleration?\u003c\/h3\u003e\n\u003cp\u003eThe Twin-Tip electrode geometry focuses the spark into a tighter, hotter zone so the air–fuel mixture ignites more reliably. That sharper ignition produces a steadier burn and reduces misfires, which you’ll notice as crisper throttle response and more immediate acceleration under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e0.4 mm iridium center electrode concentrates spark energy\u003c\/li\u003e\n  \u003cli\u003e0.7 mm needle ground electrode minimizes spark scatter\u003c\/li\u003e\n  \u003cli\u003eTighter, more consistent ignition reduces hesitation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes the Denso 4702 more durable than standard plugs?\u003c\/h3\u003e\n\u003cp\u003eDurability comes from premium materials and manufacturing methods. Denso’s high-iridium alloy combined with a 360-degree laser weld and platinum elements resists electrode erosion and thermal wear, allowing the plug to maintain its gap and performance far longer than conventional designs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented high-concentration iridium alloy for electrode longevity\u003c\/li\u003e\n  \u003cli\u003e360-degree laser welding secures the center electrode against breakage\u003c\/li\u003e\n  \u003cli\u003ePrecision-pre-fired components ensure consistent quality and fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill switching to this plug help my fuel economy?\u003c\/h3\u003e\n\u003cp\u003eMore reliable ignitability and a stable combustion event can lead to marginal gains in fuel efficiency, particularly if your current plugs are worn. While results vary by vehicle and driving style, improved spark reliability helps the engine burn fuel more completely, which can convert to modest economy improvements over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEnhanced ignitability reduces incomplete combustion\u003c\/li\u003e\n  \u003cli\u003eConsistent spark minimizes wasted fuel from misfires\u003c\/li\u003e\n  \u003cli\u003ePotential for better miles-per-gallon under normal driving\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what are the build features?\u003c\/h3\u003e\n\u003cp\u003eThe Denso 4702 is vehicle-specific and designed for straightforward replacement using standard hand tools. Denso machines the threads to prevent cross-threading, pre-fires each plug to verify quality and uses a multi-rib insulator and copper-glass seal for reliability in harsh engine environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMachine-rolled threads reduce risk of seizing during install\/removal\u003c\/li\u003e\n  \u003cli\u003eFive-rib insulator design helps prevent flashover\u003c\/li\u003e\n  \u003cli\u003eCopper-glass seal and purified alumina insulator for tight, durable construction\u003c\/li\u003e\n  \u003cli\u003eComes 100% pre-fired for verified performance out of the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Denso 4702 is aimed at drivers and mechanics who want a long-lasting, high-ignition-performance spark plug for vehicles specified to accept this part. It’s a good fit for owners seeking improved throttle response, dependable cold starts and extended service intervals over standard nickel plugs, and for anyone doing a routine tune-up who wants a premium plug with proven manufacturing controls and vehicle-specific fitment.\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: How long do Denso 4702 spark plugs last?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Denso’s iridium TT design is rated for extended life—often exceeding 100,000 miles under normal conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I replace my stock plugs with Denso 4702?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your vehicle specifies the Denso 4702 or compatible fitment, it’s a direct replacement; always check the vehicle application guides.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":55168416645463,"sku":"B016MX96SA","price":56.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/denso-4702-front-view-packaging.jpg?v=1790403369","url":"https:\/\/britishgarage.co.uk\/products\/denso-iridium-twin-tip-spark-plug-4702-0-4mm-center-electrode-long-life-performance","provider":"British Garage","version":"1.0","type":"link"}