{"product_id":"sierra-18-99230-switch-box-cdi-ignition-pack-for-mercury-and-mariner-2-cylinder-outboards","title":"Sierra 18-99230 Ignition Switch Box for Mercury Mariner 2-Cylinder Outboard Engines","description":"\u003cp\u003eThe Sierra 18-99230 is an ignition switch box built for 2-cylinder Mercury and Mariner outboard engines. The switch box is the component in the ignition circuit that manages spark delivery and timing to the powerhead, and it is a common wear\/failure point on older Mercury and Mariner outboards when starting becomes inconsistent or the engine misfires or will not fire at all. Replacing the switch box with the Sierra 18-99230 restores the ignition circuit to factory-style operation without needing to source a hard-to-find original Mercury Mariner unit.\u003c\/p\u003e\u003cp\u003eThis part is identified by Sierra part number 18-99230, the manufacturer part number used for ordering and cross-checking against your engine's ignition system. It is built specifically for the 2-cylinder Mercury Mariner outboard platform, so it is intended as a direct functional counterpart to the factory switch box on those engines rather than a universal ignition component.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99230\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Switch Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines:\u003c\/strong\u003e Mercury Mariner 2-cylinder outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282393977\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury Mariner 2-cylinder outboard engines\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99230?\u003c\/strong\u003e It is an ignition switch box made for 2-cylinder Mercury Mariner outboard engines, used in place of the factory switch box in the engine's ignition circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99230 fit?\u003c\/strong\u003e The Sierra 18-99230 is built for Mercury Mariner 2-cylinder outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-99230 switch box weigh?\u003c\/strong\u003e The Sierra 18-99230 weighs 0.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does an ignition switch box like the Sierra 18-99230 do?\u003c\/strong\u003e It manages spark delivery and timing to the powerhead, a role that is central to reliable starting and running on Mercury Mariner 2-cylinder outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99230 a genuine Sierra part or a generic substitute?\u003c\/strong\u003e Sierra 18-99230 is the manufacturer part number for this switch box, so it is a genuine Sierra-branded component rather than an unbranded substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms suggest a Mercury Mariner 2-cylinder engine needs a switch box like the 18-99230?\u003c\/strong\u003e Inconsistent starting, misfiring, or a complete failure to fire on a Mercury Mariner 2-cylinder outboard often point to a failing ignition switch box, the role the Sierra 18-99230 is designed to fill.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99230?\u003c\/strong\u003e The UPC for the Sierra 18-99230 ignition switch box is 808282393977.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-99230 fit outboards with more or fewer than 2 cylinders?\u003c\/strong\u003e No, the Sierra 18-99230 is built specifically for 2-cylinder Mercury Mariner outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the Sierra 18-99230 be used to troubleshoot ignition problems?\u003c\/strong\u003e Since it replaces the switch box that controls spark timing on Mercury Mariner 2-cylinder engines, installing the 18-99230 is a common step when isolating ignition-related no-start or misfire issues.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988439281883,"sku":"SIE-18-99230","price":378.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-114-4952A30_lg__01614.1558114578.500.750.jpg?v=1785188176","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-99230-switch-box-cdi-ignition-pack-for-mercury-and-mariner-2-cylinder-outboards","provider":"Good Vibes Marina","version":"1.0","type":"link"}