{"product_id":"a-premium-iridium-platinum-spark-plugs-pack-of-4-fine-wire-for-l4-h4-engines-0-039-0-044-gap","title":"A-Premium Iridium Platinum Spark Plugs Pack of 4 — Fine Wire for L4\/H4 Engines, 0.039–0.044\" Gap","description":"\u003cp\u003e\u003cstrong\u003eA-Premium Iridium Platinum Spark Plugs pack of 4 are fine-wire replacement plugs engineered for L4 and H4 engines that need a precise 0.039–0.044 inch gap and long service life.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese A-Premium spark plugs combine an iridium-tipped center electrode with a platinum core to deliver a durable ignition component intended for many 4-cylinder vehicles. They come as a set of four, with a 5\/8-inch hex, 14 mm thread diameter and 0.75 inch reach, making them suitable for a wide range of compact and mid-size cars and trucks. Below is a practical breakdown of what these plugs offer, how they fit, and what to check before you buy.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these spark plugs differ from standard copper plugs?\u003c\/h3\u003e\n\n\u003cp\u003eA-Premium’s iridium tip and platinum core provide a harder-wearing spark point than copper designs, improving electrode longevity and maintaining a consistent spark gap over time. That durability helps reduce frequent replacements and preserves ignition stability under varied driving conditions. While they cost more upfront, their extended service interval can lower long-term maintenance needs.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCenter electrode tip: iridium for high wear resistance\u003c\/li\u003e\n  \u003cli\u003eCore material: platinum for thermal stability\u003c\/li\u003e\n  \u003cli\u003eRecommended replacement interval: extended, commonly 80,000–100,000 miles\u003c\/li\u003e\n  \u003cli\u003eResistance: 5000 ohms to match modern ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these fit my 4-cylinder engine and which vehicles are they compatible with?\u003c\/h3\u003e\n\n\u003cp\u003eThese plugs are designed to fit many L4 engines (1.3L–2.7L) and H4 2.5L engines; they are commonly used in models from Toyota, Nissan, Mitsubishi, Honda, Kia, Subaru, Chevrolet, Scion, Suzuki, Pontiac and Hyundai. Always verify fitment against your vehicle’s exact model year and engine code before purchase. Use your vehicle’s compatibility tool or consult the part reference numbers listed for a match.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFits L4 1.3–2.7L and H4 2.5L engines\u003c\/li\u003e\n  \u003cli\u003eCommon vehicle fits: Toyota Corolla, Prius, Tacoma; Nissan Altima, Xterra; Mitsubishi Galant; Honda Civic; Subaru Forester\u003c\/li\u003e\n  \u003cli\u003eIncludes multiple legacy reference numbers for cross-checking\u003c\/li\u003e\n  \u003cli\u003eConfirm fit using VIN or vehicle fitment lookup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the important technical specifications I should know?\u003c\/h3\u003e\n\n\u003cp\u003eKey dimensions and electrical specs determine compatibility with your engine’s cylinder head and ignition system. These A-Premium plugs use a fine-wire electrode geometry and a tightly controlled gap to promote efficient combustion and reliable starting. Keep the listed thread, hex and insulator dimensions in mind when comparing to OEM parts.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eGap size: 0.039–0.044 inches\u003c\/li\u003e\n  \u003cli\u003eHex size: 5\/8 inch; reach: 0.75 inch\u003c\/li\u003e\n  \u003cli\u003eThread diameter: 14 mm; insulator height: 50.5 mm\u003c\/li\u003e\n  \u003cli\u003eElectrical resistance: 5000 ohms for compatibility with most ignition coils\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I maintain these spark plugs for maximum life?\u003c\/h3\u003e\n\n\u003cp\u003eInstall the plugs using the correct torque and gap settings for your engine, and replace them at manufacturer-recommended intervals to maintain ignition performance. Iridium and platinum electrodes resist wear, but contaminants and severe driving conditions can still affect lifespan. Routine inspections during tune-ups help detect fouling, loose connections or damaged insulators early.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTorque to vehicle manufacturer specification during installation\u003c\/li\u003e\n  \u003cli\u003eInspect for fouling or cracks during routine maintenance\u003c\/li\u003e\n  \u003cli\u003eReplace at extended intervals—commonly 80,000–100,000 miles depending on use\u003c\/li\u003e\n  \u003cli\u003eKeep ignition coils and wires in good condition to protect electrode life\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 DIY mechanics and service shops that need a long-lasting, OEM-style replacement for many 4-cylinder vehicles. Choose these plugs if you want a durable fine-wire electrode solution with defined dimensional specifications (14 mm thread, 0.75 inch reach, 5\/8 inch hex) and proven cross-reference numbers to match common OEM part codes. Before ordering, confirm fitment with your vehicle’s year and engine code to ensure the correct application.\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 spark plugs fit my Toyota Corolla?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They are commonly compatible with many Corolla engines, but confirm fit using your vehicle year and engine code or the fitment tool before ordering.\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 rated for long life; typical replacement intervals fall around 80,000–100,000 miles depending on driving conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":48087075881118,"sku":"B0CGJ5RL3M","price":30.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-premium-front-packaging_0d2d802f-d286-4fbb-a048-fb384a7a4d0c.jpg?v=1785916121","url":"https:\/\/northtrailauto.ca\/products\/a-premium-iridium-platinum-spark-plugs-pack-of-4-fine-wire-for-l4-h4-engines-0-039-0-044-gap","provider":"North Trail Auto","version":"1.0","type":"link"}