{"product_id":"overstockdirect-iridium-spark-plugs-sp550x-cyfs-12y-pctx-4-pack-oem-long-life-performance","title":"OVERSTOCKDIRECT Iridium Spark Plugs SP550X CYFS-12Y-PCTX 4-Pack — OEM, Long-Life Performance","description":"\u003cp\u003e\u003cstrong\u003eOVERSTOCKDIRECT SP550X CYFS-12Y-PCTX is a four-pack of genuine OEM iridium spark plugs designed to replace the earlier SP550 series and restore consistent ignition performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese SP550X iridium plugs are the OEM-updated replacement for the SP550 CYFS12YPCT and are sold in a set of four for convenient vehicle servicing. Built to the original manufacturer's specifications, they use a fine iridium tip for durable electrode life and steady spark delivery. Before ordering, confirm compatibility with your engine model and cylinder count to ensure the correct fit and performance.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the SP550X improve ignition reliability?\u003c\/h3\u003e\n\u003cp\u003eThe iridium center electrode provides a precise spark gap and resists wear better than standard materials, helping maintain consistent ignitions over many miles. Improved electrode durability reduces misfires and delivers steadier combustion under normal driving conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine iridium tip for stable spark and long service life\u003c\/li\u003e\n  \u003cli\u003eOEM manufacturing tolerances for exact fit and sealing\u003c\/li\u003e\n  \u003cli\u003eDesigned to reduce electrode erosion versus conventional plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these plugs fit my vehicle and how many come in the pack?\u003c\/h3\u003e\n\u003cp\u003eThis listing contains four genuine OEM SP550X CYFS-12Y-PCTX spark plugs—commonly required for 4-cylinder engines—but compatibility varies by make, model and engine. Always check your vehicle’s OEM part number or use a compatibility lookup to confirm fit before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes 4 spark plugs in one kit for typical 4-cylinder engines\u003c\/li\u003e\n  \u003cli\u003eReplaces SP550 CYFS12YPCT with the updated SP550X version\u003c\/li\u003e\n  \u003cli\u003eVerify application against engine and drivetrain specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and torque these iridium plugs?\u003c\/h3\u003e\n\u003cp\u003eInstall by hand until seated, then tighten to the vehicle manufacturer's recommended torque to avoid damage or poor sealing. Use a quality torque wrench and a compatible spark-plug socket; if unsure, have a professional technician do the job.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHand-start each plug to avoid cross-threading\u003c\/li\u003e\n  \u003cli\u003eTorque to manufacturer spec to ensure proper seal and heat transfer\u003c\/li\u003e\n  \u003cli\u003eUse anti-seize only if manufacturer advises; check gap if required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance or lifespan should I expect from these iridium plugs?\u003c\/h3\u003e\n\u003cp\u003eIridium electrodes typically last considerably longer than copper or standard platinum plugs under normal driving conditions, often allowing extended service intervals. Actual lifespan depends on driving habits, engine tune, and conditions; inspect periodically and follow the vehicle maker’s replacement schedule.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLonger service interval compared with conventional spark plugs\u003c\/li\u003e\n  \u003cli\u003eBetter resistance to fouling and electrode wear\u003c\/li\u003e\n  \u003cli\u003ePerformance depends on engine condition and driving environment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This four-pack is intended for drivers and mechanics seeking genuine OEM replacement parts—especially owners of compatible vehicles that originally used the SP550 series—who want an updated iridium option for longer life and reliable ignition. It’s suitable for do-it-yourself installers who verify fitment and for service shops that require authentic OEM components to match factory specifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInsist on Genuine OEM Parts for the Best Performance of your Vehicle\u003c\/li\u003e\n  \u003cli\u003eOffering the Quality, Reliability and Durability You'd Expect from OEM Parts\u003c\/li\u003e\n  \u003cli\u003eResearch Applications Prior to Purchase To Make Sure This OEM Part Fits Your Vehicle, Including Engine, Drivetrain and Quantity Needed.\u003c\/li\u003e\n  \u003cli\u003eOverstockDirect Offers Unbeatable Service\u003c\/li\u003e\n  \u003cli\u003eThis Listing is for 4 Spark Plugs\u003c\/li\u003e\n\u003c\/ul\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 SP550X plugs replace SP550 CYFS12YPCT?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The SP550X CYFS-12Y-PCTX is the updated OEM replacement for the SP550 CYFS12YPCT.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many spark plugs are included in this listing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This purchase includes a pack of four genuine OEM SP550X spark plugs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OVERSTOCKDIRECT","offers":[{"title":"Default Title","offer_id":48084049920158,"sku":"B09H8K1VKH","price":79.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/overstockdirect-sp550x-front-packaging.jpg?v=1785844765","url":"https:\/\/northtrailauto.ca\/products\/overstockdirect-iridium-spark-plugs-sp550x-cyfs-12y-pctx-4-pack-oem-long-life-performance","provider":"North Trail Auto","version":"1.0","type":"link"}