{"product_id":"premium-marine-spark-plug-wire-set-47-88111","title":"Sierra Premium Marine Spark Plug Wire Set – 47-88111 | MerCruiser Thunderbolt","description":"\u003ch2\u003eSierra Premium Marine Spark Plug Wire Set – MerCruiser Thunderbolt Ignition\u003c\/h2\u003e\u003cp\u003eRestore reliable spark to your MerCruiser with this premium plug wire set built specifically for Thunderbolt ignition systems. Over time, plug wires crack, harden, and develop high resistance from heat cycling and vibration — leading to misfires, rough idle, and reduced power. This Sierra set replaces them with marine-grade materials engineered for consistent, high-voltage spark delivery in demanding on-water conditions.\u003c\/p\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser engines equipped with Thunderbolt ignition systems\u003c\/li\u003e\n\u003cli\u003eRefer to Sierra part number 47-88111 application guide for specific engine models and years\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKevlar® core\u003c\/strong\u003e — maximum durability and long service life under continuous vibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel wound conductor\u003c\/strong\u003e — optimized for maximum horsepower and consistent engine performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium silicone jacketing and boots\u003c\/strong\u003e — high-temperature protection against engine bay heat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior RFI suppression\u003c\/strong\u003e — shields sensitive onboard electronics from ignition interference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-resistant stainless steel terminals\u003c\/strong\u003e — at both spark plug and distributor ends for maximum conductivity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOE-style sealed boots\u003c\/strong\u003e — barrier against heat, dirt, and moisture intrusion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication-specific magnetic suppression core\u003c\/strong\u003e — precision fit for your engine configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 47-88111\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Thunderbolt (MerCruiser)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComplete Your Ignition Service\u003c\/h3\u003e\u003cp\u003eFor a full tune-up, pair these wires with a matching distributor cap and rotor from our \u003ca href=\"\/collections\/ignition-components\"\u003eIgnition Components\u003c\/a\u003e collection. Need a different fitment? Also consider the \u003ca href=\"\/products\/sierra-premium-marine-spark-plug-wire-set-47-88021-mercruiser-thunderbolt\"\u003eSierra Wire Set – 47-88021\u003c\/a\u003e, \u003ca href=\"\/products\/sierra-premium-marine-spark-plug-wire-set-47-88032-mercruiser-thunderbolt\"\u003eSierra Wire Set – 47-88032\u003c\/a\u003e, \u003ca href=\"\/products\/sierra-premium-marine-spark-plug-wire-set-47-88041-mercruiser-thunderbolt\"\u003eSierra Wire Set – 47-88041\u003c\/a\u003e, \u003ca href=\"\/products\/sierra-premium-marine-spark-plug-wire-set-47-88071-mercruiser-thunderbolt\"\u003eSierra Wire Set – 47-88071\u003c\/a\u003e, \u003ca href=\"\/products\/sierra-premium-marine-spark-plug-wire-set-47-88082-mercruiser-thunderbolt\"\u003eSierra Wire Set – 47-88082\u003c\/a\u003e, \u003ca href=\"\/products\/sierra-premium-marine-spark-plug-wire-set-47-88101-mercruiser-thunderbolt\"\u003eSierra Wire Set – 47-88101\u003c\/a\u003e, \u003ca href=\"\/products\/sierra-88001-premium-marine-spark-plug-wire-set\"\u003eSierra Wire Set – 88001\u003c\/a\u003e, or the \u003ca href=\"\/products\/sierra-88011-premium-marine-spark-plug-wire-set\"\u003eSierra Wire Set – 88011\u003c\/a\u003e.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eAt 395g, the 47-88111 is the lightest set in this Thunderbolt wire family — a strong indicator of a small-displacement or 4-cylinder MerCruiser application with shorter wire leads. It’s the right choice when a compact Thunderbolt engine is misfiring under load, idling roughly, or showing intermittent spark after spark plugs have already been ruled out. As always, replace the full set at once to maintain consistent resistance across all cylinders. Confirm your engine model and year against the Sierra 47-88111 application guide before ordering — Thunderbolt wire sets are engine-configuration-specific and not interchangeable across the family.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250810978340,"sku":"47-88111","price":93.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-88041_982aeb4f-c831-4a61-8dbe-f11b09bc1df6.jpg?v=1786510564","url":"https:\/\/marisolmarine.com\/products\/premium-marine-spark-plug-wire-set-47-88111","provider":"Marisol Marine Company","version":"1.0","type":"link"}