{"product_id":"merc-880","title":"Mercury MerCruiser Quicksilver Oil Pressure Switch 8M0070108","description":"\u003ch2\u003eMercury MerCruiser Oil Pressure Switch\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0070108  |  \u003cstrong\u003eOEM Prefix:\u003c\/strong\u003e 87-8M0070108  |  \u003cstrong\u003eGTIN:\u003c\/strong\u003e 745061546042\u003cbr\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury \/ MerCruiser  |  \u003cstrong\u003eType:\u003c\/strong\u003e Engine Oil Pressure Switch\u003c\/p\u003e\n\n\u003cp\u003eGenuine Mercury MerCruiser OEM oil pressure switch for selected MerCruiser gasoline engines. This switch monitors engine oil pressure as part of the engine’s warning and protection circuitry. Supersedes earlier Mercury switch 864252.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected MerCruiser gasoline inboard and sterndrive engines — verify by engine model and serial number\u003c\/li\u003e\n\u003cli\u003eInstallations where 8M0070108 is shown in the engine oil-system diagram alongside a separate oil-pressure sender (such as \u003ca href=\"\/products\/8131437887524\"\u003e8M0068784\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eThis switch appears across multiple MerCruiser engine configurations. Confirm the exact engine model, serial number, and diagram position before ordering. Do not order based on engine displacement alone.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSwitch vs. Sender: Which Do You Need?\u003c\/h3\u003e\n\u003cp\u003e8M0070108 is the \u003cstrong\u003eoil-pressure switch\u003c\/strong\u003e for the engine warning\/protection circuit — it is a separate component from the \u003cstrong\u003eoil-pressure sender\u003c\/strong\u003e used to drive the oil-pressure gauge. Mercury diagrams list these as distinct parts. If you need the gauge sender, see the \u003ca href=\"\/products\/8131437887524\"\u003eMercury MerCruiser Oil Pressure Sender 8M0068784\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhen This Switch Needs Replacement\u003c\/h3\u003e\n\u003cp\u003eReplace the oil-pressure switch when diagnostic testing confirms incorrect switching behavior, when the warning circuit does not respond properly to changing oil pressure, or when the switch body or electrical connection is damaged or corroded.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eDisconnect battery power before beginning service. Confirm the replacement switch is being installed in the correct oil-pressure port — not the sender port. Inspect the wiring terminal, connector, fitting, and surrounding area for oil leakage or damage before installation. Follow the applicable Mercury MerCruiser service procedure for installation and system verification.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/8131437887524\"\u003eMercury MerCruiser Quicksilver Oil Pressure Sender 8M0068784\u003c\/a\u003e (gauge sender — separate component)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent OEM: 8M0070108\u003c\/li\u003e\n\u003cli\u003eOEM prefix: 87-8M0070108\u003c\/li\u003e\n\u003cli\u003eSupersedes: 864252\u003c\/li\u003e\n\u003cli\u003eGTIN: 745061546042\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe most common customer confusion with 8M0070108 is ordering the switch when they actually need the oil-pressure sender (8M0068784), or vice versa. The \u003cstrong\u003eswitch\u003c\/strong\u003e activates the warning system; the \u003cstrong\u003esender\u003c\/strong\u003e drives the gauge. Both parts are installed on many of the same engines and are located in the same area. Always have the customer confirm which port they are servicing and verify using the Mercury engine diagram for their specific model and serial number before ordering.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":51324693708836,"sku":"8M0070108","price":60.46,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/78b73ac3-cd02-444d-9922-3cf5c355b778.png?v=1788220034","url":"https:\/\/marisolmarine.com\/products\/merc-880","provider":"Marisol Marine Company","version":"1.0","type":"link"}