{"product_id":"voltage-regulator-rectifier-for-johnson-evinrude-175-300-hp-outboards-replaces-586000-35-amp-sierra-18-99424","title":"Sierra Voltage Regulator\/Rectifier 18-99424, 35 Amp, Replaces 586000, Fits Johnson\/Evinrude 175-300 HP 6\/8 Cylinder","description":"\u003cp\u003eThe Sierra 18-99424 is a 35 amp voltage regulator\/rectifier built for Johnson and Evinrude outboard engines. It manages the output from the engine's charging system, converting alternating current to direct current and regulating voltage to protect the battery and onboard electronics from overcharging. This is a direct-fit replacement for the factory regulator\/rectifier used on Johnson\/Evinrude 6-cylinder and 8-cylinder outboards, restoring reliable charging performance on engines whose original unit has failed or is showing signs of erratic charging, battery drain, or no-charge conditions.\u003c\/p\u003e\u003cp\u003eThe unit is a factory-style form and mounts using the original attachment points on compatible engines, letting it swap in for the OEM part without modification. It weighs 1 pound, making it a straightforward drop-in replacement for anyone comfortable with basic marine electrical work.\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 18-99424\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Voltage Regulator\/Rectifier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 35 Amp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 7.68 x 5.39 x 3.35 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 736983852892\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e 586000, 586272, 583266, 583689, 584424, 878334\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson\/Evinrude 175, 185, 200 and 225 HP (6 cylinder) outboards, 1986-1992\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 250, 275 and 300 HP (8 cylinder) outboards, 1985-1992\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e586000\u003c\/li\u003e\n\u003cli\u003e586272\u003c\/li\u003e\n\u003cli\u003e583266\u003c\/li\u003e\n\u003cli\u003e583689\u003c\/li\u003e\n\u003cli\u003e584424\u003c\/li\u003e\n\u003cli\u003e878334\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99424 voltage regulator\/rectifier do?\u003c\/strong\u003e It converts the alternating current produced by the outboard's charging system into direct current and regulates the voltage sent to the battery, preventing overcharging and protecting onboard electronics on Johnson\/Evinrude outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard engines does the 18-99424 fit?\u003c\/strong\u003e It fits Johnson\/Evinrude 175, 185, 200 and 225 HP 6-cylinder outboards from 1986-1992, and Johnson\/Evinrude 250, 275 and 300 HP 8-cylinder outboards from 1985-1992.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-99424 replace?\u003c\/strong\u003e The Sierra 18-99424 replaces OEM numbers 586000, 586272, 583266, 583689, 584424 and 878334.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99424 a direct OEM replacement or an aftermarket part?\u003c\/strong\u003e It is an aftermarket voltage regulator\/rectifier manufactured to replace the listed OEM part numbers on Johnson\/Evinrude engines, functioning as a direct swap for the original unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99424 regulator\/rectifier weigh?\u003c\/strong\u003e The Sierra 18-99424 weighs 1 pound.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-99424?\u003c\/strong\u003e Package dimensions for this regulator\/rectifier are 7.68 x 5.39 x 3.35 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat amperage rating does the 18-99424 have?\u003c\/strong\u003e It is rated at 35 amps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-99424 fit a 4-cylinder Johnson\/Evinrude outboard?\u003c\/strong\u003e No, the fitment covers 6-cylinder 175-225 HP models (1986-1992) and 8-cylinder 250-300 HP models (1985-1992); it is not listed as fitting 4-cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99424 include mounting hardware?\u003c\/strong\u003e The listing covers the voltage regulator\/rectifier unit itself; no additional accessories are specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-99424 to fix a no-charge or battery drain issue on my outboard?\u003c\/strong\u003e Yes, a failed voltage regulator\/rectifier is a common cause of no-charge or erratic charging symptoms, and the 18-99424 is designed to replace the original unit on compatible Johnson\/Evinrude engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99424?\u003c\/strong\u003e The UPC for this product is 736983852892.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443508955,"sku":"SIE-18-99424","price":269.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-193-3689_lg__44422.1558112518.500.750.jpg?v=1785188050","url":"https:\/\/www.goodvibesmarina.com\/products\/voltage-regulator-rectifier-for-johnson-evinrude-175-300-hp-outboards-replaces-586000-35-amp-sierra-18-99424","provider":"Good Vibes Marina","version":"1.0","type":"link"}