{"product_id":"merc-394","title":"Mercury MerCruiser Quicksilver Exhaust Mounting Screw (3\/8-16 x 1-1\/4 in.) 58640","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eMercury 58640 is a 3\/8-16 x 1-1\/4-inch screw used at specified MerCruiser exhaust-pipe and exhaust-elbow mounting points. Legacy parts catalogs identify it as an elbow-to-gimbal-housing fastener; the same part number also appears in some Bravo universal-joint and shifter assemblies.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal catalog number: 10-58640\u003c\/li\u003e\n\u003cli\u003eThread: 3\/8-16; length: 1-1\/4 in.\u003c\/li\u003e\n\u003cli\u003eCurrent replacement reference: 10-8M0113174.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eEngine Compatibility \u0026amp; Fitment Notice\u003c\/h2\u003e\u003cp\u003eMatch the original screw number and assembly callout to the engine or drive serial number. Exhaust assemblies can use different fastener lengths at neighboring positions; use the service manual for the specified washer arrangement and tightening procedure.\u003c\/p\u003e\u003ch2\u003eAlternate \/ Superseded Part Numbers\u003c\/h2\u003e\u003cp\u003eOriginal 10-58640 is superseded by 10-8M0113174; 10-8M0067652 is an intermediate replacement reference.\u003c\/p\u003e\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\u003cp\u003eReplace damaged or heavily corroded mounting screws when servicing the exhaust-pipe joint or the specified drive assembly.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eCheck the adjoining fastener callouts for different lengths, and follow the relevant exhaust or drive tightening procedure.\u003c\/p\u003e\u003ch2\u003eMercury Parts Finder\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.mercurymarine.com\/us\/en\/parts-finder\"\u003eSearch Mercury parts by serial number or part number\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\u003cp\u003eThe verified replacement is 8M0113174, but the original 58640 stock number remains useful when matching older exhaust diagrams.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563863343140,"sku":"58640","price":9.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/mercury-brand-placeholder-user-provided_88ccc117-71ff-4c41-bd0a-58372381dab0.jpg?v=1791243886","url":"https:\/\/marisolmarine.com\/products\/merc-394","provider":"Marisol Marine Company","version":"1.0","type":"link"}