{"product_id":"a-premium-iridium-platinum-spark-plugs-pack-of-6-for-l6-3-0l-bmw-fine-wire-12mm-thread","title":"A-Premium Iridium Platinum Spark Plugs Pack of 6 for L6 3.0L BMW — Fine Wire, 12mm Thread","description":"\u003cp\u003e\u003cstrong\u003eA-Premium Iridium Platinum Spark Plugs pack of 6 are high-durability, fine-wire ignition plugs engineered to fit L6 3.0L BMW engines and similar applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese spark plugs combine an iridium-tipped center electrode with a platinum core to provide a durable firing surface and consistent spark performance. Designed as a direct-fit replacement for many BMW models using the L6 3.0L engine, the set includes six plugs with a pre-set 0.032 inch gap and 12 mm thread diameter. The construction and materials aim to extend service life, reduce misfires, and maintain ignition stability under varying driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and part numbers do these plugs replace?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are listed to replace several OEM references and are compatible with a wide range of BMW models that use the L6 3.0L engine. Always verify fitment by entering your vehicle information before ordering and review any special notes to confirm compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces references like 97506, SILZKBR8D8S, 12120039664, 12120040573, 12127622445.\u003c\/li\u003e\n  \u003cli\u003eFitment includes many 3.0L inline-six BMW models across 1, 3, 4, 5, 6, 7, X-series and M-range years noted in the product listing.\u003c\/li\u003e\n  \u003cli\u003eIntended as direct-fit replacements—no modification required for listed models when matched correctly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key specifications and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eCritical dimensions and electrical properties determine sealing, reach, and ignition behavior. This pack’s iridium tip and platinum core provide a balance of long-term wear resistance and stable conductivity, while the 5000 ohm resistance helps suppress ignition noise for sensitive electronics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCenter electrode: iridium tip for longevity and focused spark.\u003c\/li\u003e\n  \u003cli\u003eCore material: platinum for improved wear characteristics.\u003c\/li\u003e\n  \u003cli\u003eElectrical resistance: 5000 ohms to reduce radio interference and protect ignition components.\u003c\/li\u003e\n  \u003cli\u003ePhysical specs: 12.00 mm thread diameter, 26.5 mm reach, 50.0 mm insulator height, 0.55 inch hex.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these plugs affect maintenance intervals and lifespan?\u003c\/h3\u003e\n\u003cp\u003eTheir iridium and platinum construction is selected for extended service life compared with standard copper plugs. While driving style and conditions influence longevity, these plugs are engineered for long mileage intervals when installed and used under normal operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended replacement interval: typically 80,000–100,000 miles under standard conditions.\u003c\/li\u003e\n  \u003cli\u003eFine-wire tip reduces electrode erosion for more consistent spark over time.\u003c\/li\u003e\n  \u003cli\u003eUse of OEM-equivalent specs preserves factory timing and combustion characteristics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before buying and installing these spark plugs?\u003c\/h3\u003e\n\u003cp\u003eConfirming exact vehicle compatibility and engine code is essential to ensure correct fit and performance. If you’re replacing plugs yourself, follow torque specs, thread engagement, and gap settings; consult a repair manual or a qualified technician for model-specific procedures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEnter vehicle details in the listing to verify fitment for your year and model.\u003c\/li\u003e\n  \u003cli\u003eConfirm the 0.032 inch gap and retorque to manufacturer specs when installing.\u003c\/li\u003e\n  \u003cli\u003eInspect ignition coils and wiring at the same time to prevent future issues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: These A-Premium iridium platinum plugs suit owners and professional technicians working on BMW vehicles and other compatible applications that require a 12 mm, fine-wire, long-life spark plug for L6 3.0L engines. They are a practical choice for drivers seeking a durable aftermarket replacement that adheres to OEM dimensions and offers extended service intervals without changing engine calibration.\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 plug set compatible with my BMW 335i 2013?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this A-Premium pack fits many 335i 2011–2015 models with the L6 3.0L engine; verify your exact model year and engine code before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace A-Premium iridium platinum plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: These plugs are designed for long life; replacement is typically suggested 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":55168310870359,"sku":"B0CDJTDVN8","price":47.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/a-premium-front-packaging-spark-plugs_8557a35b-84db-4519-b8b4-da75529ee3d3.jpg?v=1790399542","url":"https:\/\/britishgarage.co.uk\/products\/a-premium-iridium-platinum-spark-plugs-pack-of-6-for-l6-3-0l-bmw-fine-wire-12mm-thread","provider":"British Garage","version":"1.0","type":"link"}