{"product_id":"a-premium-double-iridium-spark-plugs-pack-of-4-fine-wire-direct-fit-for-l4-toyota-scion-lexus-long-life","title":"A-Premium Double Iridium Spark Plugs Pack of 4 — Fine-Wire, Direct-Fit for L4 Toyota\/Scion\/Lexus, Long Life","description":"\u003cp\u003e\u003cstrong\u003eA-Premium Double Iridium spark plugs are a 4-pack of precision fine-wire ignition plugs engineered to deliver reliable starts and long life in compatible L4 Toyota, Scion and Lexus engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese spark plugs combine an iridium center electrode and iridium core with a fine-wire design to improve ignitability and sustain performance over extended mileage. They match OE specifications for thread size, reach and hex dimensions, making them a direct-fit service part for many 1.3L–2.0L inline-four engines in Corolla, Prius, C-HR, Scion and Lexus CT200h models listed in the vehicle fitment. The plugs are optimized for consistent spark delivery and are rated for long replacement intervals when used under normal driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eWill these spark plugs fit my vehicle?\u003c\/h3\u003e\n\u003cp\u003eCompatibility is determined by thread diameter, reach and engine application. These A-Premium plugs are designed to fit a range of late-model Toyota, Scion and Lexus L4 engines that use the DF6H-11B\/95993 reference numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread diameter: 12.00 mm and reach 26.5 mm match listed OE specs\u003c\/li\u003e\n  \u003cli\u003eHex size: 14 mm for standard socket installation\u003c\/li\u003e\n  \u003cli\u003eConfirm part numbers (DF6H-11B, 95993) and vehicle year\/engine before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these double iridium electrodes help ignition?\u003c\/h3\u003e\n\u003cp\u003eDouble iridium construction places iridium at both the center tip and core for a more durable, stable spark surface. This reduces electrode wear and helps maintain a consistent firing characteristic over time compared with standard nickel plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine-wire center electrode improves spark focus and ignitability\u003c\/li\u003e\n  \u003cli\u003eIridium on tip and core resists erosion for extended service life\u003c\/li\u003e\n  \u003cli\u003e1000 ohm resistor helps suppress electrical interference with electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key specs I need to know before installing?\u003c\/h3\u003e\n\u003cp\u003eCheck these physical and electrical details to confirm proper installation and safe operation. They match common OE requirements for the listed vehicles and engine types.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGap size: 0.044 in (pre-set for typical applications)\u003c\/li\u003e\n  \u003cli\u003eInsulator height: 51.00 mm; Reach: 26.5 mm\u003c\/li\u003e\n  \u003cli\u003eResistance: 1000 ohms to reduce radio\/ECU interference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often should I replace these plugs and what performance can I expect?\u003c\/h3\u003e\n\u003cp\u003eDouble iridium plugs are designed for a long service interval when used under normal driving conditions. Replacement intervals depend on driving style, engine condition and maintenance, but these plugs are intended to offer extended durability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended replacement range: roughly 100,000–120,000 miles under typical use\u003c\/li\u003e\n  \u003cli\u003eExpect steadier starts, consistent idle and sustained combustion performance over time\u003c\/li\u003e\n  \u003cli\u003eInspect ignition system components periodically for optimal results\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: A-Premium Double Iridium Spark Plugs are aimed at owners and technicians working on compatible Toyota, Scion and Lexus inline-four engines who want an OEM-style replacement with long-life iridium electrodes. Choose these plugs if you need a direct-fit, fine-wire iridium option specified for Corolla, Prius, C-HR, Scion iM\/iQ and Lexus CT200h model years listed in the fitment notes, and want to minimize service frequency while maintaining reliable ignitability and electrical compatibility.\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 a direct fit for my Corolla or Prius?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They fit specific Corolla and Prius model years listed under DF6H-11B\/95993; verify your engine code and year for compatibility.\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?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: For normal driving, replace these double iridium plugs around 100,000–120,000 miles.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":48085558657182,"sku":"B0CD2GQ6WP","price":37.54,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-premium-spark-plugs-packaging-front.jpg?v=1785873207","url":"https:\/\/northtrailauto.ca\/products\/a-premium-double-iridium-spark-plugs-pack-of-4-fine-wire-direct-fit-for-l4-toyota-scion-lexus-long-life","provider":"North Trail Auto","version":"1.0","type":"link"}