{"product_id":"msd-ford-tfi-high-performance-ignition-coil-8227-44kv-tested-tfi-replacement","title":"MSD Ford TFI High-Performance Ignition Coil 8227 — 44kV Tested, TFI Replacement","description":"\u003cp\u003e\u003cstrong\u003eMSD 8227 is a high-performance Ford TFI-style ignition coil engineered to deliver reliable high-voltage sparks for improved ignition consistency in compatible Ford distributors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis MSD 8227 coil replaces Ford TFI coils in many older and performance-oriented ignition systems, offering a tested peak output up to 44,000 volts when paired with MSD ignition units. Built to MSD's electrical specifications, it provides specific primary and secondary resistances and designed inductance to work with electronic ignition modules and improve spark energy at the plug. Always consult vehicle fitment and MSD installation guidelines before replacing ignition components.\u003c\/p\u003e\n\n\u003ch3\u003eWhat electrical specs define the MSD 8227 coil?\u003c\/h3\u003e\n\u003cp\u003eThe 8227 is specified with both primary and secondary electrical characteristics so you can match it to your ignition system. Those values indicate how the coil stores and transfers energy and help technicians confirm compatibility with modules and ignition amplifiers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTurns ratio: factory-rated for Ford TFI applications\u003c\/li\u003e\n  \u003cli\u003ePrimary resistance: 0.68 ohms\u003c\/li\u003e\n  \u003cli\u003eSecondary resistance: 4.8 KΩ (4800 ohms)\u003c\/li\u003e\n  \u003cli\u003eInductance: 5.6 mH\u003c\/li\u003e\n  \u003cli\u003eMaximum tested voltage: 44,000 volts when used with MSD 6AL or similar units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this coil affect ignition performance?\u003c\/h3\u003e\n\u003cp\u003eHigher, consistent secondary voltage helps the spark jump the plug gap reliably under load and high RPM, improving combustion stability. The MSD coil is wound and insulated to support high-voltage output for stronger pulses compared with many stock coils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDelivers dependable voltage for consistent spark at higher RPM\u003c\/li\u003e\n  \u003cli\u003eDesigned for electronic ignition modules and MSD amplifiers\u003c\/li\u003e\n  \u003cli\u003eReduced misfire risk in tuned or higher-compression engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use the MSD 8227 with my existing MSD ignition box?\u003c\/h3\u003e\n\u003cp\u003eYes — the coil is tested at 44,000 volts specifically with MSD ignition boxes like the 6AL, making it a compatible choice when upgrading or replacing a TFI coil in performance setups. Verify wiring and mounting clearance before installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTested compatibility with MSD high-energy ignition units\u003c\/li\u003e\n  \u003cli\u003eMounting and terminal configuration matches common Ford TFI form factors\u003c\/li\u003e\n  \u003cli\u003eWorks with standard distributor-based ignition wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there safety or regulatory notes I should know?\u003c\/h3\u003e\n\u003cp\u003eIgnition coils generate very high voltages; follow safety procedures during installation and testing to avoid shock hazards. This product has a California Proposition 65 warning — review the linked resource if you are concerned about exposure to listed chemicals.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHandle terminals and high-voltage outputs with insulated tools\u003c\/li\u003e\n  \u003cli\u003eDisconnect battery and follow OEM service manual steps\u003c\/li\u003e\n  \u003cli\u003eSee www.P65Warnings.ca.gov for Proposition 65 details\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The MSD 8227 coil is aimed at mechanics, restorers, and performance enthusiasts running Ford TFI-style distributor ignitions who need a robust, high-voltage replacement coil. It fits users upgrading to MSD ignition boxes, restoring classic Fords, or anyone requiring precise electrical specifications for tuning or troubleshooting. If you require OEM exact-fit guidance, check vehicle-specific compatibility and professional installation if unsure.\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: What are the primary and secondary resistances of the MSD 8227?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Primary resistance is 0.68 ohms and secondary resistance is 4.8 KΩ (4800 ohms).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the MSD 8227 compatible with MSD ignition boxes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it’s tested up to 44,000 volts when used with MSD units like the 6AL, but verify fitment first.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MSD","offers":[{"title":"Default Title","offer_id":48087765287070,"sku":"B00C5SY35I","price":132.43,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/msd-8227-front-view.jpg?v=1785930818","url":"https:\/\/northtrailauto.ca\/products\/msd-ford-tfi-high-performance-ignition-coil-8227-44kv-tested-tfi-replacement","provider":"North Trail Auto","version":"1.0","type":"link"}