{"product_id":"spark-plug-wire-fits-mercury-mariner-150-200-hp-replaces-84-813715a1","title":"Spark Plug Wire – Fits Mercury\/Mariner 150-200 HP (Replaces 84-813715A1)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e9\" Spark Plug Wire – Fits Mercury\/Mariner Outboard 150-200 HP (Replaces 84-813715A1)\u003c\/strong\u003e is designed to provide a reliable ignition connection for Mercury and Mariner V6 outboard engines (150–200 HP, 2-Stroke, 1970–1988). It ensures efficient transfer of energy from the ignition coil or distributor to the spark plug for consistent engine performance.\u003c\/p\u003e\n\u003cp\u003eServes as a direct replacement for Sierra part 18-5227-1, Mercury 84-813715A1, and HEPENG 18-5227-1.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls directly as a replacement for the original part.\u003c\/li\u003e\n\u003cli\u003eFeatures a 7mm silicone jacket and a metallic\/magnetic suppression core for durability and protection against interference.\u003c\/li\u003e\n\u003cli\u003ePackage includes one 9-inch spark plug wire.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e84-813715A1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-5227-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eHEPENG\u003c\/td\u003e\n        \u003ctd\u003e18-5227-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis part is designed for specific Mercury and Mariner V-6 outboards.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-150\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 4868998-0A904645\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-150 Magnum\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 5600162-0A904645\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-150 Marathon\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 5600162-0A904645\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-150 Work\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 4868998-0A904645\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-150-XR-2\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 4868998-0A904645\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-1500\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 4868998-0A904645\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-175\u003c\/td\u003e\n\u003ctd\u003e175\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 4301235-0C100860, 8058870-UP\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eV-200\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1970–1988\u003c\/td\u003e\n\u003ctd\u003e84-813715A1\u003c\/td\u003e\n\u003ctd\u003eSerial range: 5239232-0C100860\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eSpark Plug Wire\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eLength\u003c\/dt\u003e\n\u003cdd\u003e9 inches (229 mm)\u003c\/dd\u003e\n  \u003cdt\u003eCompatible With\u003c\/dt\u003e\n\u003cdd\u003eMercury\/Mariner outboard engines\u003c\/dd\u003e\n  \u003cdt\u003eWire Diameter\u003c\/dt\u003e\n\u003cdd\u003e7mm\u003c\/dd\u003e\n  \u003cdt\u003eCore Type\u003c\/dt\u003e\n\u003cdd\u003eMetallic\/magnetic suppression core\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eSilicone insulation with stainless steel conductor\u003c\/dd\u003e\n  \u003cdt\u003eConnection Type\u003c\/dt\u003e\n\u003cdd\u003eTerminal end for coil\/distributor, boot end for spark plug\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e 9\" Spark Plug Wire (84-813715A1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First:\u003c\/strong\u003e Ensure the engine is completely cool and the battery is disconnected before starting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocate Wires:\u003c\/strong\u003e Identify the spark plug wire to be replaced. It's often helpful to replace wires one at a time to avoid mixing up the firing order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Wire:\u003c\/strong\u003e Firmly grasp the boot at the spark plug end and twist gently to break the seal, then pull it straight off. Do the same on the distributor\/coil end. Do not pull on the wire itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect Connections:\u003c\/strong\u003e Check the spark plug and distributor\/coil terminal for corrosion or damage. Clean if necessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Wire:\u003c\/strong\u003e Lightly apply dielectric grease to the inside of both boots of the new wire. This helps with sealing and future removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect and Secure:\u003c\/strong\u003e Push the spark plug boot firmly onto the spark plug until it clicks into place. Repeat for the distributor\/coil end. Ensure both connections are secure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinal Check:\u003c\/strong\u003e Reconnect the battery, start the engine, and check for smooth operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my spark plug wires need replacing?\u003c\/summary\u003e\u003cp\u003eCommon signs of failing spark plug wires include rough idling, engine misfires, poor acceleration, decreased fuel economy, and visible damage like cracks, burns, or corrosion on the wires or boots.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a set of wires or just one?\u003c\/summary\u003e\u003cp\u003eThis listing is for a single 9-inch spark plug wire. Please verify the quantity you need for your specific engine, as V6 models typically require multiple wires of varying lengths.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is a magnetic suppression core?\u003c\/summary\u003e\u003cp\u003eA magnetic suppression core is designed to reduce electromagnetic interference (EMI) and radio frequency interference (RFI) generated by the ignition system. This helps prevent interference with onboard electronics and radio equipment.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit my newer Mercury engine?\u003c\/summary\u003e\u003cp\u003eThis specific wire is designed for Mercury\/Mariner V6 models from 1970–1988. It is not compatible with newer models. Always verify the part number and engine specifications before purchasing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I cut this wire to a shorter length?\u003c\/summary\u003e\u003cp\u003eNo. These wires are manufactured to a specific length and resistance. Cutting them will alter their performance and could cause engine damage or ignition system failure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723778232635,"sku":"ET-24SP084","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/ET-24SP084.png?v=1763031586","url":"https:\/\/seasierra.com\/products\/spark-plug-wire-fits-mercury-mariner-150-200-hp-replaces-84-813715a1","provider":"SeaSierra","version":"1.0","type":"link"}