{"product_id":"johnson-evinrude-rectifier-regulator-3-wire-replaces-oem-580841-fits-1969-2000-50-235-hp-outboards-sierra-18-99413","title":"Sierra 18-99413 Regulated Rectifier - Replaces 153-3408, 580841 - Johnson\/Evinrude 2\/3\/4\/6 Cyl 50-235 HP","description":"\u003cp\u003eThe Sierra 18-99413 is a regulated rectifier built as a direct replacement for Johnson and Evinrude outboard engines that use a rectifier-based charging system. It takes the raw AC output from the outboard's alternator\/stator, converts it to DC, and regulates the voltage so the battery is charged correctly without being overcharged or damaged. This is a core charging-system component, and a failed or unregulated rectifier is one of the most common causes of a marine battery that will not hold a charge or an engine that runs down its battery over time.\u003c\/p\u003e\u003cp\u003eSierra 18-99413 is built with a metal housing for heat dissipation and durability in the marine engine compartment, and is designed as a straightforward swap for the outboard charging systems it is intended to service. It covers a wide span of Johnson\/Evinrude outboards across 2, 3, 4, and 6 cylinder configurations, making it a common shelf item for shops and owners servicing older outboard charging systems.\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 18-99413\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Mode:\u003c\/strong\u003e Electric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Engine mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Horsepower:\u003c\/strong\u003e 235 horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282394448\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude outboards, 2\/3\/4\/6 cylinder, 1969-2000, 50 to 235 HP (rectifier-equipped charging systems only)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e153-3408\u003c\/li\u003e\n\u003cli\u003e580841\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99413 rectifier do?\u003c\/strong\u003e It converts the AC output from a Johnson\/Evinrude outboard's stator into regulated DC current, charging the battery correctly while protecting it from overcharging. Part number 18-99413 is a direct fit for outboards using a rectifier-based charging system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines does the 18-99413 fit?\u003c\/strong\u003e Sierra 18-99413 fits Johnson\/Evinrude outboards from 50 to 235 HP across 2, 3, 4, and 6 cylinder configurations, covering engines built from 1969 through 2000 that use a rectifier (not an alternator with a separate voltage regulator).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-99413 the same as part number 153-3408 or 580841?\u003c\/strong\u003e Yes, the Sierra 18-99413 is a cross-reference equivalent for OEM\/aftermarket numbers 153-3408 and 580841, so it can be used as a direct replacement for engines calling for either of those part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the rectifier weigh?\u003c\/strong\u003e The Sierra 18-99413 regulated rectifier weighs 0.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the rectifier housing made of?\u003c\/strong\u003e It has a metal housing, which helps dissipate the heat generated during the AC-to-DC conversion and voltage regulation process.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-99413 installed?\u003c\/strong\u003e It is an engine-mount component that installs in place of the existing rectifier on compatible Johnson\/Evinrude outboards, wiring into the existing charging circuit; always confirm your engine uses a rectifier-only charging system before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this work on an engine with a separate alternator and voltage regulator?\u003c\/strong\u003e No. The Sierra 18-99413 is designed for engines using a rectifier only; it is not intended for charging systems that use a separate alternator and regulator setup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the rectifier needs to be replaced?\u003c\/strong\u003e A battery that will not hold a charge, runs down during use, or shows erratic charging voltage is a common sign of a failing rectifier on Johnson\/Evinrude outboards in the 50-235 HP range that 18-99413 services.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99413 include mounting hardware?\u003c\/strong\u003e The listing covers the regulated rectifier unit itself, part number 18-99413; confirm hardware needs against your specific engine before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or aftermarket?\u003c\/strong\u003e Sierra 18-99413 is sold under the Sierra part number and functions as a cross-reference replacement for OEM numbers 153-3408 and 580841 on applicable Johnson\/Evinrude outboards.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443377883,"sku":"SIE-18-99413","price":94.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-193-3408_lg__40697.1748376103.500.750.jpg?v=1785188026","url":"https:\/\/www.goodvibesmarina.com\/products\/johnson-evinrude-rectifier-regulator-3-wire-replaces-oem-580841-fits-1969-2000-50-235-hp-outboards-sierra-18-99413","provider":"Good Vibes Marina","version":"1.0","type":"link"}