{"product_id":"merc-161","title":"Mercury MerCruiser - Gasket - 344863","description":"\u003cp\u003eThe Mercury MerCruiser Quicksilver Distributor Base Gasket 27-344863 is an OEM-style sealing gasket used between the distributor base and engine block on compatible MerCruiser marine engines. It helps seal the distributor mounting area against oil vapor, moisture, and debris while supporting proper ignition-system installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury\/MerCruiser distributor base gasket\u003c\/li\u003e\n\u003cli\u003ePart number: 27-344863\u003c\/li\u003e\n\u003cli\u003eAlso referenced as 344863\u003c\/li\u003e\n\u003cli\u003eSeals distributor base to engine block\u003c\/li\u003e\n\u003cli\u003eApproximate dimensions: 1.78\" L x 1.78\" W x 0.25\" H\u003c\/li\u003e\n\u003cli\u003eApproximate weight: 0.02 lb\u003c\/li\u003e\n\u003cli\u003eUPC \/ GTIN: 745061137288\u003c\/li\u003e\n\u003cli\u003eUsed on select GM-based marine engine distributor applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFits select MerCruiser GM-based marine engines using a conventional distributor base gasket, including 3.7L \/ 224 inline-4 engines, 4.3L V6 engines, and select small-block and big-block V8 applications such as 5.0L, 5.7L, and 7.4L configurations.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by engine serial number, distributor style, and parts diagram before ordering. Distributor gasket fitment can vary by engine family, ignition system, block design, and production range.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket whenever the distributor is removed, or if the gasket is torn, compressed, oil-soaked, brittle, leaking, or damaged during ignition-system service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the distributor base and engine block sealing surfaces before installation. Mark distributor position before removal, avoid disturbing timing setup unnecessarily, and confirm ignition timing according to Mercury service procedures after reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePrimary Mercury references: 27-344863 and 344863. Common aftermarket interchange: Sierra Marine 18-0874.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDistributor gaskets are simple, but they sit in a timing-sensitive area. Marking the distributor position before removal helps prevent extra ignition timing work after the gasket is replaced.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563854135332,"sku":"344863","price":3.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/0fb5caff-ddcb-4151-a62c-a51262be4743.png?v=1779597499","url":"https:\/\/marisolmarine.com\/products\/merc-161","provider":"Marisol Marine Company","version":"1.0","type":"link"}