{"product_id":"johnson-evinrude-timer-base-3-cyl-replaces-584804-fits-50-60-65-70-hp-loop-charged-outboards-1993-2001-sierra-18-99395","title":"Sierra 18-99395 Johnson\/Evinrude 3-Cylinder Timer Base, Replaces 584804\/584805\/763773, Fits 1993-2001 50-70 HP Engines","description":"\u003cp\u003eThe Sierra 18-99395 is a replacement timer base built for 3-cylinder Johnson\/Evinrude loop charged outboard engines equipped with Quick Start and S.L.O.W. Ignition systems. The timer base is a core ignition component that controls spark timing across the powerhead, and a worn or cracked unit is a common cause of hard starting, misfires, and inconsistent idle on these engines. This timer base is molded from durable plastic to withstand the heat and vibration of the engine compartment while housing the internal ignition timing components. It is designed as a direct fit for 1993-2001 50, 60, 65, and 70 HP 3-cylinder Johnson\/Evinrude loop charged engines with Quick Start and S.L.O.W. It cross-references to the OEM part numbers 584804, 584805, and 763773, so it installs in place of the original timer base without modification. At 0.8 pounds, it ships as a single ready-to-install unit. Whether you are restoring ignition performance on an aging outboard or replacing a failed timer base as part of a broader tune-up, the 18-99395 gives you an OEM-equivalent part sized and specified for this engine family.\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 18-99395\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Timer Base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Count:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Horsepower:\u003c\/strong\u003e 50, 60, 65, 70 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Years:\u003c\/strong\u003e 1993-2001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System:\u003c\/strong\u003e Quick Start and S.L.O.W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\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 808282394288\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 584804, 584805, 763773\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude 3 cylinder loop charged engines with Quick Start and S.L.O.W.: 50, 60, 65 and 70 HP (1993-2001)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e584804\u003c\/li\u003e\n\u003cli\u003e584805\u003c\/li\u003e\n\u003cli\u003e763773\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99395 timer base fit?\u003c\/strong\u003e The Sierra 18-99395 fits 3 cylinder loop charged Johnson\/Evinrude engines with Quick Start and S.L.O.W. Ignition systems, specifically the 1993-2001 50, 60, 65, and 70 HP models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this timer base replace?\u003c\/strong\u003e It replaces OEM part numbers 584804, 584805, and 763773, so it can be installed directly in place of any of those original Johnson\/Evinrude timer bases.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-99395 an original or aftermarket timer base?\u003c\/strong\u003e The Sierra 18-99395 is an aftermarket replacement timer base manufactured to match the fit and function of the original 584804, 584805, and 763773 timer bases.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the timer base weigh?\u003c\/strong\u003e The Sierra 18-99395 timer base weighs 0.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the timer base made of?\u003c\/strong\u003e It is made of plastic, chosen to withstand the heat and vibration inside the outboard's ignition compartment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this timer base work with Quick Start and S.L.O.W. Ignition systems?\u003c\/strong\u003e Yes, the 18-99395 is specifically designed for 3 cylinder loop charged Johnson\/Evinrude engines equipped with Quick Start and S.L.O.W. Ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate a timer base needs replacement?\u003c\/strong\u003e Hard starting, misfires, and an inconsistent idle on a 3 cylinder Johnson\/Evinrude engine are common signs that the timer base, such as the 18-99395, has failed or cracked.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-99395 fit a 4 cylinder or V6 Johnson\/Evinrude engine?\u003c\/strong\u003e No, the Sierra 18-99395 is built specifically for 3 cylinder loop charged 1993-2001 50, 60, 65, and 70 HP Johnson\/Evinrude engines, not 4 cylinder or V6 models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when you order the 18-99395?\u003c\/strong\u003e The order includes one Sierra 18-99395 timer base, ready to install in place of the original 584804, 584805, or 763773 unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use OEM part number 584805 to cross-reference the correct timer base?\u003c\/strong\u003e Yes, part number 584805 is one of the OEM numbers that the Sierra 18-99395 replaces, along with 584804 and 763773.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988442558683,"sku":"SIE-18-99395","price":236.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-133-4804_lg__71234.1722381628.500.750.jpg?v=1785188200","url":"https:\/\/www.goodvibesmarina.com\/products\/johnson-evinrude-timer-base-3-cyl-replaces-584804-fits-50-60-65-70-hp-loop-charged-outboards-1993-2001-sierra-18-99395","provider":"Good Vibes Marina","version":"1.0","type":"link"}