{"product_id":"fasworx-mercruiser-thunderbolt-v8-distributor-cap-rotor-8mm-spark-plug-wire-kit-5-0-5-7-7-4-8-2-350-j1171-brass-contacts","title":"FASWORX Mercruiser Thunderbolt V8 Distributor Cap, Rotor \u0026 8mm Spark Plug Wire Kit — 5.0\/5.7\/7.4\/8.2\/350, J1171 Brass Contacts","description":"\u003cp\u003e\u003cstrong\u003eComplete distributor cap, rotor and 8mm spark plug wire kit engineered to restore reliable spark and ignition timing on Mercruiser V8 engines with Thunderbolt ignition systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis FASWORX kit supplies a new distributor cap, rotor and a full set of 8mm spark plug wires designed specifically for Mercruiser Thunderbolt-equipped V8 marine engines (5.0, 5.7, 7.4, 8.2, 350). Every component is sized and specified to match OEM fit and function, and the cap is J1171 certified with brass\/copper contacts for consistent conductivity. The set includes installation hardware, a cap gasket and drain, and dielectric grease for the wire boots to simplify installation and help maintain corrosion resistance in a marine environment.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit improve ignition reliability on a Thunderbolt V8?\u003c\/h3\u003e\n\u003cp\u003eReplacing an aged distributor cap, rotor and wires removes wear-related resistance, carbon tracking and moisture paths that can cause misfires or weak spark. Fresh components restore tight connections and uniform spark distribution across cylinders, which helps the engine run more smoothly and start more predictably.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eJ1171 certified distributor cap with brass\/copper contacts for steady conductivity\u003c\/li\u003e\n  \u003cli\u003e8mm spark plug wires matched for consistent resistance and fit\u003c\/li\u003e\n  \u003cli\u003eNew rotor eliminates excessive air gap and wear at the contact point\u003c\/li\u003e\n  \u003cli\u003eIncluded dielectric grease and gasket reduce moisture intrusion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich Mercruiser engines and part numbers does this set replace?\u003c\/h3\u003e\n\u003cp\u003eThis kit is made to fit Mercruiser V8 engines equipped with the Thunderbolt ignition system including 5.0, 5.7, 7.4, 8.2 and 350 CID models. It is a direct replacement for common OEM part numbers and aligns with Thunderbolt distributor configurations for those engines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Thunderbolt ignition on 5.0, 5.7, 7.4, 8.2 and 350 V8 engines\u003c\/li\u003e\n  \u003cli\u003eReplaces Mercruiser part numbers 805759Q3 and 84-816608Q61\u003c\/li\u003e\n  \u003cli\u003eDesigned for exact distributor cap mounting and rotor engagement\u003c\/li\u003e\n  \u003cli\u003eIncludes bolts, cap gasket, and drain for direct swap-out\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and what tools or supplies will I need?\u003c\/h3\u003e\n\u003cp\u003eThe box contains a new distributor cap, rotor, a full set of 8mm spark plug wires, mounting bolts, cap gasket, distributor drain and a tube of dielectric grease for the wire boots. You’ll need basic hand tools and a torque wrench if your engine manual specifies torque for cap bolts; a clean rag and small brush help with prep.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDistributor cap and rotor sized for Thunderbolt distributors\u003c\/li\u003e\n  \u003cli\u003eSet of eight 8mm spark plug wires with proper terminals\u003c\/li\u003e\n  \u003cli\u003eMounting bolts, cap gasket, distributor drain, and dielectric grease\u003c\/li\u003e\n  \u003cli\u003eRecommended tools: ratchet, sockets, screwdrivers, and torque wrench\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I maintain the ignition components after installation?\u003c\/h3\u003e\n\u003cp\u003ePeriodic visual inspection and keeping connections clean and dry will extend service life. Reapply dielectric grease to boots when servicing and replace wires or cap at first sign of cracking, corrosion or carbon tracking.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect boots and cap seals for cracks or oil contamination\u003c\/li\u003e\n  \u003cli\u003eCheck for corrosion on brass\/copper contacts and clean gently if needed\u003c\/li\u003e\n  \u003cli\u003eKeep dielectric grease on boots to repel moisture and ease removal\u003c\/li\u003e\n  \u003cli\u003eFollow engine manufacturer intervals for ignition system checks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: marine owners, mechanics and restoration specialists working on Mercruiser Thunderbolt V8 engines who need a reliable, direct-replacement ignition kit. If you own a 5.0, 5.7, 7.4, 8.2 or 350 Mercruiser with Thunderbolt ignition and want OEM-style fit, J1171-certified cap contacts, and a complete set of 8mm plug wires with installation hardware, this FASWORX kit provides the parts and accessories required for a professional swap.\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: Will this kit fit my Thunderbolt 5.7 V8?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This FASWORX kit is compatible with Thunderbolt-equipped 5.0, 5.7, 7.4, 8.2 and 350 V8 Mercruiser engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the distributor cap contacts corrosion resistant?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The cap uses brass\/copper contacts and includes sealing gasket and drain to minimize corrosion under marine conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FASWORX","offers":[{"title":"Default Title","offer_id":48080425910430,"sku":"B07QP2W5CG","price":128.66,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/fasworx-mercruiser-cap-rotor-front.jpg?v=1785781195","url":"https:\/\/northtrailauto.ca\/products\/fasworx-mercruiser-thunderbolt-v8-distributor-cap-rotor-8mm-spark-plug-wire-kit-5-0-5-7-7-4-8-2-350-j1171-brass-contacts","provider":"North Trail Auto","version":"1.0","type":"link"}