{"product_id":"voltage-regulator-rectifier-for-johnson-evinrude-150-235-hp-6-cyl-110-140-hp-4-cyl-35-amp-replaces-oem-583076-sierra-18-99399","title":"Sierra 18-99399 Voltage Regulator\/Rectifier, Replaces 583076, for Johnson\/Evinrude 4\/6 Cylinder 35 Amp Outboards","description":"\u003cp\u003eThe Sierra 18-99399 Voltage Regulator\/Rectifier is a 35 amp replacement unit built for Johnson\/Evinrude outboard charging systems. It regulates alternator output and rectifies AC current to DC to keep the battery properly charged and protect onboard electronics from voltage spikes. This unit is designed for 6-cylinder Johnson\/Evinrude outboards rated 150, 155, 175, 185, and 235 HP, as well as 4-cylinder 110, 115, and 140 HP outboards equipped with the 35 amp charging upgrade.\u003c\/p\u003e\u003cp\u003eThe regulator\/rectifier is a direct-fit replacement for the OEM part numbers listed below, so it installs using the factory wiring harness and mounting points without modification. It measures 8 x 6 x 4 inches and weighs 1.1 pounds.\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 18-99399\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Product Code:\u003c\/strong\u003e 808282394325\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Evinrude Outboard Rectifier Regulator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 35 Amp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Brand:\u003c\/strong\u003e Johnson\/Evinrude\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Configuration:\u003c\/strong\u003e 4-Cylinder and 6-Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 8 x 6 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.1 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson\/Evinrude 150, 155, 175, and 185 HP (6 cylinder), 1984-1991\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 235 HP (6 cylinder), 1984-1991\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude 110, 115, and 140 HP (4 cylinder with 35 Amp upgrade), 1992\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e583076\u003c\/li\u003e\n\u003cli\u003e582904\u003c\/li\u003e\n\u003cli\u003e584423\u003c\/li\u003e\n\u003cli\u003e583268\u003c\/li\u003e\n\u003cli\u003e395204\u003c\/li\u003e\n\u003cli\u003e395391\u003c\/li\u003e\n\u003cli\u003e878335\u003c\/li\u003e\n\u003cli\u003e721876\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99399 voltage regulator\/rectifier do?\u003c\/strong\u003e It regulates the alternator's output voltage and converts AC current to DC on Johnson\/Evinrude outboards, keeping the battery properly charged and protecting onboard electronics from overcharging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich Johnson\/Evinrude engines does part 18-99399 fit?\u003c\/strong\u003e It fits Johnson\/Evinrude 6-cylinder outboards rated 150, 155, 175, 185, and 235 HP from 1984-1991, and 4-cylinder 110, 115, and 140 HP outboards from 1992 equipped with the 35 amp charging upgrade.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-99399 a 35 amp or 16 amp regulator?\u003c\/strong\u003e The Sierra 18-99399 is rated at 35 amps, matching the charging output of the Johnson\/Evinrude engines it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does Sierra 18-99399 replace?\u003c\/strong\u003e Sierra 18-99399 replaces OEM numbers 583076, 582904, 584423, 583268, 395204, 395391, 878335, and 721876.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of this regulator\/rectifier?\u003c\/strong\u003e The Sierra 18-99399 measures 8 x 6 x 4 inches and weighs 1.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this unit work with a 4-cylinder Johnson\/Evinrude outboard?\u003c\/strong\u003e Yes, 18-99399 fits 4-cylinder 110, 115, and 140 HP Johnson\/Evinrude outboards from 1992 that have the 35 amp charging upgrade, in addition to the 6-cylinder applications it covers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-99399 install with the factory wiring?\u003c\/strong\u003e Yes, since it is a direct replacement for the listed OEM numbers, it connects to the existing factory wiring harness and mounting points on the applicable Johnson\/Evinrude outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-99399 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e It is an aftermarket replacement manufactured by Sierra, engineered to replace the OEM Johnson\/Evinrude numbers 583076, 582904, 584423, 583268, 395204, 395391, 878335, and 721876.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 18-99399 on a 6-cylinder 235 HP Evinrude?\u003c\/strong\u003e Yes, the 235 HP (6 cylinder) Johnson\/Evinrude outboard from 1984-1991 is a listed application for the Sierra 18-99399 regulator\/rectifier.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this part?\u003c\/strong\u003e You receive one Sierra 18-99399 voltage regulator\/rectifier unit, sized for direct installation on the applicable Johnson\/Evinrude outboard charging system.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988443246811,"sku":"SIE-18-99399","price":224.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-193-5204_lg__01684.1558113423.500.750.jpg?v=1785188025","url":"https:\/\/www.goodvibesmarina.com\/products\/voltage-regulator-rectifier-for-johnson-evinrude-150-235-hp-6-cyl-110-140-hp-4-cyl-35-amp-replaces-oem-583076-sierra-18-99399","provider":"Good Vibes Marina","version":"1.0","type":"link"}