{"product_id":"ngk-lfr6a-11-spark-plugs-4-pack-oem-grade-durable-ignition-for-4-cylinder-engines","title":"NGK LFR6A-11 Spark Plugs 4-Pack — OEM-Grade, Durable Ignition for 4-Cylinder Engines","description":"\u003cp\u003e\u003cstrong\u003eNGK 3672 LFR6A-11 spark plugs are OEM-grade ignition components sold in a convenient 4-pack, engineered to deliver reliable starts and long service life for compatible gasoline engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese NGK LFR6A-11 plugs are frequently specified as original equipment and combine proven materials with precise manufacturing to maintain consistent combustion and dependable ignition. Supplied as a set of four, they suit many four-cylinder applications and are built to the quality, reliability and durability NGK is known for worldwide. Before purchase, verify fitment against your vehicle's engine specifications to ensure correct thread size, reach and heat range.\u003c\/p\u003e\n\n\u003ch3\u003eHow do NGK LFR6A-11 spark plugs improve ignition consistency?\u003c\/h3\u003e\n\u003cp\u003eNGK spark plugs are manufactured to tight tolerances for electrode gap and centering, which helps produce a stable, repeatable spark across cylinders. Consistent spark timing supports smoother idling and steady throttle response without overpromising performance changes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOEM-quality construction for uniform electrode geometry\u003c\/li\u003e\n  \u003cli\u003ePrecise factory gap settings reduce initial tuning effort\u003c\/li\u003e\n  \u003cli\u003eDurable materials resist electrode wear and fouling\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\u003cp\u003eCompatibility depends on the engine’s thread size, reach, and heat range; NGK’s part number LFR6A-11 corresponds to specific applications. Check your owner’s manual, vehicle parts database, or NGK’s online lookup to match the 3672 designation before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm the OEM part number or cross-reference with NGK 3672\u003c\/li\u003e\n  \u003cli\u003eVerify spark plug thread pitch, reach (thread length), and hex size\u003c\/li\u003e\n  \u003cli\u003eAccount for engine type and number of cylinders (this listing is for four plugs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance and installation tips should I follow?\u003c\/h3\u003e\n\u003cp\u003eInstall using the correct torque and a clean working environment to avoid cross-threading and ensure a gas-tight seal. Replace all plugs at the interval recommended by your vehicle maker or when performance symptoms indicate; inspecting coil boots and wires at the same time is a good practice.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse a torque wrench and follow OEM torque specs\u003c\/li\u003e\n  \u003cli\u003eApply anti-seize only if manufacturer recommends it\u003c\/li\u003e\n  \u003cli\u003eInspect ignition boots and wiring while replacing plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can I expect NGK plugs to last and what affects lifespan?\u003c\/h3\u003e\n\u003cp\u003eLifespan varies with driving conditions, engine health and fuel quality; NGK plugs offer durable service life compared with generic alternatives but will wear over time. Periodic inspection reveals electrode erosion or deposits that signal replacement is needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNormal lifespan depends on heat range and operating conditions\u003c\/li\u003e\n  \u003cli\u003eContamination from oil or coolant reduces service life\u003c\/li\u003e\n  \u003cli\u003eHigh-mileage engines may require more frequent replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The NGK 3672 LFR6A-11 (4 Pack) is suited for do-it-yourself mechanics, professional technicians and vehicle owners seeking OEM-equivalent spark plugs for compatible gasoline engines. Ideal when you need a matched set for a four-cylinder engine or want reliable replacement components from the world's largest OEM spark plug supplier. Always verify fitment for your specific model, engine and drivetrain before purchase.\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 NGK LFR6A-11 plugs sold individually or only as a set?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This listing is for a pack of four NGK 3672 LFR6A-11 spark plugs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How can I confirm these plugs fit my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your owner's manual or NGK's online parts lookup for the LFR6A-11\/3672 compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":55168294486359,"sku":"B072DR84WK","price":44.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ngk-3672-lfr6a-11-front-packaging.jpg?v=1790398591","url":"https:\/\/britishgarage.co.uk\/products\/ngk-lfr6a-11-spark-plugs-4-pack-oem-grade-durable-ignition-for-4-cylinder-engines","provider":"British Garage","version":"1.0","type":"link"}