{"product_id":"merc-616","title":"Mercury MerCruiser Quicksilver Ignition Coil 8M0054588","description":"\u003ch2\u003eMercury MerCruiser Ignition Coil – MPI ECM 555 Applications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0054588 (392-8M0054588)\u003cbr\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury \/ Quicksilver\u003cbr\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 745061877849\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser 4.3L MPI (ECM 555) – 2001 and newer, serial 0M300000–2A455878\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.0L MPI (ECM 555) – 2001 and newer, serial 0M300000–2A455878\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.7L \/ 350 MAG MPI (ECM 555) – 2001 and newer, serial 0M300000–2A455878\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6.2L \/ MX 6.2L MPI (ECM 555) – 2001 and newer, serial 0M300000–2A455878\u003c\/li\u003e\n\u003cli\u003eSterndrive and inboard (MIE) configurations with ECM 555 ignition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Confirm your engine serial number and ignition system configuration before ordering. This coil is specific to ECM 555 MPI applications within serial range 0M300000–2A455878. Similar MerCruiser engines using Thunderbolt or other ignition systems require different coils.\u003c\/p\u003e\n\n\u003ch3\u003eSuperseded Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e863704\u003c\/li\u003e\n\u003cli\u003e863704T\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWeak or absent spark confirmed by diagnostic testing\u003c\/li\u003e\n\u003cli\u003eIntermittent ignition failure or engine misfire\u003c\/li\u003e\n\u003cli\u003eInternal coil failure\u003c\/li\u003e\n\u003cli\u003ePhysical damage to the coil housing or terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProperly diagnose misfire symptoms before replacing the coil.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect battery power before beginning any ignition system service\u003c\/li\u003e\n\u003cli\u003eInspect the coil bracket, primary wiring, high-tension lead, distributor cap, rotor, and connectors before installing\u003c\/li\u003e\n\u003cli\u003eReconnect all terminals securely\u003c\/li\u003e\n\u003cli\u003eVerify correct ignition operation after replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe critical identifiers for this coil are \u003cstrong\u003eMPI + ECM 555 + serial range 0M300000–2A455878\u003c\/strong\u003e. Matching the ignition system type matters more than engine displacement alone — MerCruiser produced similar 4.3L and V8 engines across multiple ignition platforms, and using the wrong coil is a common ordering mistake. When in doubt, confirm ECM 555 before ordering.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":51324693479460,"sku":"8M0054588","price":600.74,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/01bcef3a-b17a-451e-86aa-027d34e47323.png?v=1788240079","url":"https:\/\/marisolmarine.com\/products\/merc-616","provider":"Marisol Marine Company","version":"1.0","type":"link"}