{"product_id":"mercury-mariner-ignition-pack-switch-box-for-40-50-hp-2-cyl-outboards-1992-1995-replaces-18495a13-sierra-18-99245","title":"Sierra Ignition Pack 18-99245 for Mercury\/Mariner 2-Cylinder 40\/50 HP Outboards, Replaces 18495A13","description":"\u003cp\u003eThe Sierra 18-99245 Ignition Pack is a replacement ignition module built for Mercury and Mariner 2-cylinder outboard engines. This ignition pack governs spark timing and delivery for the engine's ignition system, and is a direct fit for 1992-1995 Mercury\/Mariner 2 cylinder 40 HP and 50 HP outboard motors. It is designed as a bolt-on replacement, allowing installation in place of the original ignition pack without modification to the engine's wiring harness or mounting points. The unit measures 7 x 4 x 2 inches, making it a compact component suited to the switch box location on these outboard powerheads. Sierra 18-99245 cross-references to several Mercury\/Mariner OEM part numbers, so it serves as a reliable replacement when an original ignition pack has failed or is being proactively replaced. Boat owners and marine technicians use this part to restore consistent ignition performance on affected Mercury and Mariner 2-cylinder outboards, and it is stocked as a straightforward like-for-like swap for the OEM 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 18-99245\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Mercury Outboard Switch Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Mercury\/Mariner 2 Cylinder Outboards, 1992-1995, 40 and 50 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Count:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 40 HP, 50 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 7 x 4 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 18495A13, 18495A11, 18495A2, 18495A4, 18495A5, 18495A6, 18495A8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury\/Mariner 2 Cylinder Outboards, 1992-1995, 40 HP\u003c\/li\u003e\n\u003cli\u003eMercury\/Mariner 2 Cylinder Outboards, 1992-1995, 50 HP\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e18495A13\u003c\/li\u003e\n\u003cli\u003e18495A11\u003c\/li\u003e\n\u003cli\u003e18495A2\u003c\/li\u003e\n\u003cli\u003e18495A4\u003c\/li\u003e\n\u003cli\u003e18495A5\u003c\/li\u003e\n\u003cli\u003e18495A6\u003c\/li\u003e\n\u003cli\u003e18495A8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99245 ignition pack fit?\u003c\/strong\u003e It fits Mercury and Mariner 2 cylinder outboard engines from 1992-1995, specifically the 40 HP and 50 HP models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-99245 replace?\u003c\/strong\u003e The Sierra 18-99245 ignition pack replaces Mercury\/Mariner OEM part numbers 18495A13, 18495A11, 18495A2, 18495A4, 18495A5, 18495A6, and 18495A8.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this ignition pack weigh?\u003c\/strong\u003e The Sierra 18-99245 ignition pack weighs 0.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-99245 ignition pack?\u003c\/strong\u003e It measures 7 x 4 x 2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a direct bolt-on replacement?\u003c\/strong\u003e Yes, the Sierra 18-99245 is a bolt-on installation, so it fits into the existing mounting location without engine modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-99245 work on a 3 cylinder Mercury outboard?\u003c\/strong\u003e No, the Sierra 18-99245 ignition pack is built specifically for 2 cylinder Mercury\/Mariner outboards, not 3 cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99245 fit both 40 HP and 50 HP Mercury outboards?\u003c\/strong\u003e Yes, this ignition pack fits both the 40 HP and 50 HP Mercury\/Mariner 2 cylinder outboards built between 1992 and 1995.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99245 compatible with Mariner-branded outboards, not just Mercury?\u003c\/strong\u003e Yes, since Mariner outboards from this era share the same 2 cylinder powerhead and ignition components as Mercury, the 18-99245 fits both brands.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does an ignition pack do on a Mercury outboard?\u003c\/strong\u003e The ignition pack (also called a switch box) controls spark timing and delivery to the engine's ignition system, and the Sierra 18-99245 replaces this component when it fails.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my Mercury outboard needs a replacement ignition pack like the 18-99245?\u003c\/strong\u003e Symptoms such as hard starting, misfiring, or a complete loss of spark on a 1992-1995 2 cylinder 40 or 50 HP Mercury\/Mariner outboard often point to a failed ignition pack that the 18-99245 is designed to replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-99245?\u003c\/strong\u003e The order includes one Sierra 18-99245 ignition pack, sized 7 x 4 x 2 inches.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988440199387,"sku":"SIE-18-99245","price":333.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-114-4952_lg__18223.1558114515.500.750.jpg?v=1785189129","url":"https:\/\/www.goodvibesmarina.com\/products\/mercury-mariner-ignition-pack-switch-box-for-40-50-hp-2-cyl-outboards-1992-1995-replaces-18495a13-sierra-18-99245","provider":"Good Vibes Marina","version":"1.0","type":"link"}