{"product_id":"a-premium-iridium-platinum-spark-plugs-pack-of-4-for-l4-nissan-engines-fine-wire-12mm-thread","title":"A-Premium Iridium Platinum Spark Plugs Pack of 4 for L4 Nissan Engines — Fine-Wire, 12mm Thread","description":"\u003cp\u003e\u003cstrong\u003eA-Premium Iridium Platinum spark plugs (pack of 4) are fine-wire, double-alloy ignition plugs engineered to fit a range of L4 Nissan and compatible vehicles, offering stable spark performance and long service life.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese A-Premium plugs combine an iridium-tipped center electrode with a platinum core to deliver consistent ignition, reliable starting and extended replacement intervals. Manufactured with a 0.044\" pre-set gap and a 12 mm thread diameter, they match factory reach and geometry for many 4-cylinder Nissan engines and a handful of compatible makes. The plugs are resistance-type (5000 ohms) and come in a set of four—sized and spec'd to be a direct replacement where listed fitment applies.\u003c\/p\u003e\n\n\u003ch3\u003eWill these spark plugs fit my vehicle?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are listed for numerous L4 engines across Nissan models and compatible vehicles. Check the reference numbers and engine details against your owner's manual or existing plugs to confirm fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReference numbers: 91187, LKAR6AIX-11, XP5684 and related cross-refs.\u003c\/li\u003e\n  \u003cli\u003eCommon Nissan fits: Altima (2007–2013), Rogue (2008–2015), Sentra (2007–2019), Versa\/Versa Note (2007–2020), Cube, Frontier, Micra, NV200.\u003c\/li\u003e\n  \u003cli\u003eAlso compatible with Chevrolet City Express and Suzuki Equator where 12 mm thread and reach match.\u003c\/li\u003e\n  \u003cli\u003ePre-set gap: 0.044 inches; confirm engine requires this gap before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the iridium and platinum materials help performance?\u003c\/h3\u003e\n\u003cp\u003eThe combination of an iridium tip and a platinum core provides a durable, heat-resistant spark surface that preserves electrode geometry longer than standard copper plugs. This improves ignition consistency and reduces the frequency of replacements compared with conventional designs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium center electrode for precise, long-lasting spark delivery.\u003c\/li\u003e\n  \u003cli\u003ePlatinum core supports electrode stability and wear resistance.\u003c\/li\u003e\n  \u003cli\u003eFine-wire design lowers the voltage required for consistent ignition.\u003c\/li\u003e\n  \u003cli\u003eResistance 5000 ohms to protect ignition systems and reduce interference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the exact specifications and installation details?\u003c\/h3\u003e\n\u003cp\u003eKey dimensions and electrical specs are provided so you can confirm compatibility. The plug’s reach, hex size and insulator height match many OEM requirements for 4-cylinder engines listed in the fitment notes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGap size: 0.044 inches (factory pre-set).\u003c\/li\u003e\n  \u003cli\u003eThread diameter: 12.00 mm; reach: 26.50 mm; insulator height: 51.00 mm.\u003c\/li\u003e\n  \u003cli\u003eHex size: 0.55 inches—use the correct socket for torque accuracy.\u003c\/li\u003e\n  \u003cli\u003eElectrical resistance: 5000 ohms—compatible with most ignition coils and control modules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can these spark plugs be expected to last?\u003c\/h3\u003e\n\u003cp\u003eA-Premium recommends replacing iridium\/platinum spark plugs on a long service interval depending on driving conditions and manufacturer guidance. Regular inspection at service intervals will help maintain optimal ignition and fuel efficiency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuggested replacement interval: 80,000–100,000 miles under normal driving.\u003c\/li\u003e\n  \u003cli\u003eInspect for fouling, deposits or electrode wear during tune-ups.\u003c\/li\u003e\n  \u003cli\u003eReplace sooner if the engine shows misfires, rough idle, or hard starting.\u003c\/li\u003e\n  \u003cli\u003eAlways torque to the vehicle manufacturer’s specification at installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The A-Premium Iridium Platinum spark plugs pack of 4 is aimed at owners and technicians working on Nissan 4-cylinder models and compatible vehicles who want an affordable, longer-life replacement that preserves factory fitment and ignition performance. If your vehicle’s service manual lists any of the referenced part numbers or specifies a 12 mm, 26.5 mm reach plug with a 0.044\" gap and resistance plug type, this set is a direct-fit option that balances durability and cost.\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 plugs compatible with a 2013 Nissan Altima 2.5L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The pack lists compatibility with the 2013 Altima L4 2.5L when matching the 12 mm thread and 26.5 mm reach, gap 0.044\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the recommended replacement interval for these spark plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A-Premium recommends replacing iridium\/platinum plugs every 80,000–100,000 miles under normal driving conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":55163378041175,"sku":"B0CF9WFRBZ","price":34.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/a-premium-front-packaging_5e47f2ab-60ff-4073-a0ef-fd27f4b1cf0d.jpg?v=1790343696","url":"https:\/\/britishgarage.co.uk\/products\/a-premium-iridium-platinum-spark-plugs-pack-of-4-for-l4-nissan-engines-fine-wire-12mm-thread","provider":"British Garage","version":"1.0","type":"link"}