{"product_id":"664-81970-62-voltage-regulator-rectifier-for-yamaha-jlm-marine","title":"664-81970-62 Voltage Regulator Rectifier for Yamaha | JLM Marine","description":"\u003ch2\u003eVoltage Regulator Rectifier – Fits Yamaha Outboard 9.9–55 HP (1984–1997)\u003c\/h2\u003e\n\n\u003cp\u003eThis voltage regulator rectifier is engineered for Yamaha outboard motors ranging from 9.9 HP to 55 HP, covering model years 1984 through 1997. It ensures stable charging system performance by converting AC voltage from the stator to DC voltage for battery charging and electrical system operation.\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket replacement directly replaces Yamaha OEM part numbers \u003cstrong\u003e664-81970-62\u003c\/strong\u003e, \u003cstrong\u003e664-81970-61\u003c\/strong\u003e, and \u003cstrong\u003e664-81970-60\u003c\/strong\u003e, providing a cost-effective solution for maintaining your outboard's electrical reliability.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eCompact design: 36.9 mm length × 34 mm width\u003c\/li\u003e\n\u003cli\u003e4-pin plug interface with 4-wire configuration\u003c\/li\u003e\n\u003cli\u003eBrand new condition, ready to install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e664-81970-62\u003c\/td\u003e\n\u003ctd\u003ePrimary OEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e664-81970-61\u003c\/td\u003e\n\u003ctd\u003eSuperseded by 664-81970-62\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e664-81970-60\u003c\/td\u003e\n\u003ctd\u003eSuperseded by 664-81970-62\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-serial-number-guide-2025\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Serial Number Guide\u003c\/a\u003e. You can also review exploded diagrams to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/yamaha-outboard-parts-diagrams-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eYamaha Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e1986–1993\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e15 HP\u003c\/td\u003e\n\u003ctd\u003e1986–1993\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e1984–1987\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003ctd\u003e1984–1993\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e1990, 1991, 1997\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e55 HP\u003c\/td\u003e\n\u003ctd\u003e1989–1993\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e36.9 mm \/ 1.56 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e34 mm \/ 1.35 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Plug Interface Pins\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Plugs\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Wires\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eYour purchase includes:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e1 × Voltage Regulator Rectifier\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the battery:\u003c\/strong\u003e Remove the negative terminal first, then the positive terminal to ensure electrical safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocate the existing regulator\/rectifier:\u003c\/strong\u003e It is typically mounted near the engine block or under the cowling on Yamaha outboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the wiring harness:\u003c\/strong\u003e Carefully unplug the 4-pin connector from the old regulator\/rectifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove mounting hardware:\u003c\/strong\u003e Unbolt or unscrew the old unit from its mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall the new regulator\/rectifier:\u003c\/strong\u003e Position the new unit in the same location and secure it with the original mounting hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect the wiring harness:\u003c\/strong\u003e Plug the 4-pin connector into the new regulator\/rectifier, ensuring it clicks into place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect the battery:\u003c\/strong\u003e Attach the positive terminal first, then the negative terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest the charging system:\u003c\/strong\u003e Start the engine and verify that the battery voltage increases (typically 13.5–14.5V at idle).\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if my regulator\/rectifier is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include a dead or weak battery, flickering lights, overcharging (boiling battery), or inconsistent electrical performance. Use a multimeter to check voltage output while the engine is running.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will this fit my specific Yamaha outboard model?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your engine's horsepower and year with the compatibility table above. Also verify that your original part number matches 664-81970-62, 664-81970-61, or 664-81970-60.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this myself or do I need a mechanic?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have basic mechanical skills and tools, installation is straightforward—disconnect the battery, swap the units, and reconnect. However, professional installation is recommended to ensure safety and proper electrical function.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the voltage regulator rectifier?\u003c\/strong\u003e\u003cbr\u003e\nA: Replace it only when symptoms of failure appear or during routine electrical system troubleshooting. There is no fixed service interval, but marine environments can accelerate corrosion and wear.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between OEM and this aftermarket part?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51960669995321,"sku":"18ER001","price":39.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/57.jpg?v=1771677635","url":"https:\/\/jlmmarine.com\/products\/664-81970-62-voltage-regulator-rectifier-for-yamaha-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}