{"product_id":"overstockdirect-ngk-laser-iridium-spark-plugs-lzfr5ci11-16-pack-5-7l-hemi-oe-fit-long-life","title":"OVERSTOCKDIRECT NGK Laser Iridium Spark Plugs LZFR5CI11 16-Pack — 5.7L HEMI OE Fit, Long-Life","description":"\u003cp\u003e\u003cstrong\u003eThese are a 16-pack of NGK LZFR5CI11 (stock 92145) Laser Iridium spark plugs engineered for 5.7L HEMI V8 engines that require OE-equivalent iridium performance and long service life.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you maintain a Chrysler, Dodge, Jeep or Ram with the 5.7L V8 from model years roughly 2009–2024, these NGK Laser Iridium plugs match the OE specification and are sold as the LZFR5CI11 (92145) 16-pack. They combine an iridium-tipped fine-wire center electrode with a copper core and high-grade ceramic insulator to offer consistent ignition characteristics, factory-style fitment (flat seat, 14.0 mm thread, 26.5 mm reach) and a pre-set gap suitable for many OE ignition systems. Always cross-check the part number with your vehicle manual before installing.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and years use these LZFR5CI11 (92145) plugs?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are specified for many Chrysler-family vehicles equipped with the 5.7L V8. Compatibility covers Ram 1500\/2500\/3500, Charger, Challenger, 300, Durango, Grand Cherokee, Wagoneer and others across the 2009–2024 model span where the OEM calls for this NGK equivalent.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRam 1500\/1500 Classic: 2009–2024 (selected years and trims with 5.7L V8)\u003c\/li\u003e\n  \u003cli\u003eCharger, Challenger, 300, Durango, Grand Cherokee, Wagoneer: model years listed 2009–2024\u003c\/li\u003e\n  \u003cli\u003eMatches OE references SP143877AA \/ SP143877AB \/ 68143877AB where specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow are these spark plugs constructed and why does that matter?\u003c\/h3\u003e\n\u003cp\u003eNGK Laser Iridium plugs combine a fine-wire iridium center electrode with a copper core and high-purity ceramic to control heat, resist wear and maintain a stable spark gap. The iridium tip is harder than platinum and helps maintain performance over a longer interval, while the ceramic and copper core manage temperature and conductivity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCenter electrode: iridium fine-wire for durable, consistent sparks\u003c\/li\u003e\n  \u003cli\u003eCore: 98% pure copper for thermal conduction and reliable starts\u003c\/li\u003e\n  \u003cli\u003eInsulator: high-grade alumina ceramic to resist overheating and fouling\u003c\/li\u003e\n  \u003cli\u003eResistor type with crush washer and 5\/8\" hex for OEM-style installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key specifications to confirm fitment?\u003c\/h3\u003e\n\u003cp\u003eBefore installing, check the plug’s thread diameter (14.0 mm), reach (26.5 mm), seat type (flat), and pre-gapped size (0.044 in \/ 1.1 mm). These dimensions align with OE requirements for many 5.7L HEMI applications and help ensure proper seat and heat transfer.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread diameter: 14.0 mm (0.551 in)\u003c\/li\u003e\n  \u003cli\u003eReach: 26.5 mm (1.043 in) and flat seat\u003c\/li\u003e\n  \u003cli\u003ePre-gap: 0.044 in (1.1 mm) — verify before installation\u003c\/li\u003e\n  \u003cli\u003eHex size: 5\/8\" (16 mm) and insulator height ~50.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat practical benefits can I expect from choosing NGK Laser Iridium?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are built to meet OEM performance goals: consistent ignition, controlled electrode wear, and extended service intervals compared with many conventional plugs. They’re designed for distributorless and coil-on-plug systems common to modern V8 engines, offering stable combustion behavior across driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium tip for long-term wear resistance and stable spark delivery\u003c\/li\u003e\n  \u003cli\u003eCopper core and ceramic insulator for thermal stability and reliable starts\u003c\/li\u003e\n  \u003cli\u003eManufactured to OEM-quality tolerances for fit and function\u003c\/li\u003e\n  \u003cli\u003eSold as a complete 16-pack for vehicles requiring full-plug replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: owners and technicians servicing Chrysler, Dodge, Jeep and Ram vehicles with the 5.7L V8 who need an OEM-equivalent 16-pack of NGK Laser Iridium spark plugs (LZFR5CI11 \/ 92145). Ideal for full-plug replacement during routine maintenance or overhaul when OE specification, durable iridium tips and precise fitment are required. Always confirm vehicle part numbers and gap requirements before purchase and installation.\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: Do these NGK plugs fit a 2015 Ram 1500 5.7L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—many 2011–2024 Ram 1500 models with the 5.7L V8 use the LZFR5CI11 (92145). Verify your vehicle’s OEM part number before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these plugs pre-gapped and ready to install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They come pre-set to 0.044 in (1.1 mm), but always check and adjust the gap per your manufacturer's specs before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OVERSTOCKDIRECT","offers":[{"title":"Default Title","offer_id":48079968698526,"sku":"B09DRPP667","price":252.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/overstockdirect-ngk-92145-front-packaging.jpg?v=1785777528","url":"https:\/\/northtrailauto.ca\/products\/overstockdirect-ngk-laser-iridium-spark-plugs-lzfr5ci11-16-pack-5-7l-hemi-oe-fit-long-life","provider":"North Trail Auto","version":"1.0","type":"link"}