{"product_id":"sierra-88071-premium-marine-spark-plug-wire-set-47-88071","title":"Sierra Premium Marine Spark Plug Wire Set – 47-88071 | MerCruiser Thunderbolt","description":"\u003ch2\u003eSierra Premium Marine Spark Plug Wire Set – MerCruiser Thunderbolt Ignition\u003c\/h2\u003e\u003cp\u003eGive your MerCruiser’s ignition system a reliable upgrade with this premium spark plug wire set built for Thunderbolt ignition applications. Cracked, brittle, or high-resistance plug wires are a leading cause of misfires and rough running — this Sierra set replaces them with marine-grade materials designed to deliver consistent spark under the heat, vibration, and moisture conditions of on-water use.\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 47-88071 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 47-88071\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-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 508g, the 47-88071 is the lightest set in this Thunderbolt wire family — consistent with a smaller displacement or fewer-cylinder MerCruiser application. It’s the right choice when a compact or 4-cylinder Thunderbolt engine is showing misfires, rough idle, or intermittent spark after spark plugs have already been inspected. As with all plug wire sets, replace the full set at once to maintain consistent resistance across all cylinders. Confirm your engine model and year against the Sierra 47-88071 application guide before ordering, as Thunderbolt wire sets are configuration-specific.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250810716196,"sku":"47-88071","price":120.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-88371_ef475cde-2751-43be-9345-83d394e99f08.jpg?v=1786510562","url":"https:\/\/marisolmarine.com\/products\/sierra-88071-premium-marine-spark-plug-wire-set-47-88071","provider":"Marisol Marine Company","version":"1.0","type":"link"}