{"product_id":"db-electrical-12v-65a-alternator-for-mercruiser-350-454-5-7l-direct-fit-internal-regulator","title":"DB Electrical 12V 65A Alternator for Mercruiser 350\/454\/5.7L - Direct-Fit, Internal Regulator","description":"\u003cp\u003e\u003cstrong\u003eThe DB Electrical 400-12151 is a direct-fit 12V, 65A alternator engineered to replace select Mercruiser alternators and restore reliable charging for compatible inboard, stern drive, and ski engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement alternator is designed for marine and stern-drive applications where dependable electrical charging is essential. Built to match common OEM specifications and multiple cross-reference numbers, it aims to be a straightforward swap for Mercruiser models from the late 1990s through the 2000s that use a 6-groove pulley and 65mm outer diameter. The unit includes an internal regulator (IR) and a clockwise (CW) rotation fan type (IF), simplifying installation for technicians and DIYers who need a like-for-like component.\u003c\/p\u003e\n\n\u003ch3\u003eWill this alternator fit my Mercruiser engine?\u003c\/h3\u003e\n\u003cp\u003eCheck your engine model and production years against the listed compatibilities to confirm fit. The 400-12151 is specified for a wide range of Mercruiser inboard, stern drive, and ski engine families including 350 Mag MPI, 5.7L EFI\/MPI, 454 Mag MPI (Gen VI), and several 4.3L and 7.4L variants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVoltage: 12V; output: 65 amps — matches many OEM replacements.\u003c\/li\u003e\n  \u003cli\u003eRotation: clockwise (CW) with internal regulator and IF fan type.\u003c\/li\u003e\n  \u003cli\u003eFits engines with 6-groove pulley, 65mm OD — common on listed Mercruiser models.\u003c\/li\u003e\n  \u003cli\u003eCross-references numerous OEM numbers (e.g., 862031, 8460, 19020609).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow straightforward is installation?\u003c\/h3\u003e\n\u003cp\u003eThis alternator is a direct-fit replacement so no custom modifications should be required for compatible engines. Most installations require basic hand tools, correct belt routing, and attention to battery\/disconnect safety procedures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for bolt-on replacement — same mounting points as OEM units.\u003c\/li\u003e\n  \u003cli\u003eInternal regulator eliminates external regulator wiring for many installs.\u003c\/li\u003e\n  \u003cli\u003eFollow standard marine electrical safety: disconnect battery before work.\u003c\/li\u003e\n  \u003cli\u003eConfirm pulley grooves and OD match your existing setup before fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and performance highlights?\u003c\/h3\u003e\n\u003cp\u003eThe 400-12151 emphasizes durable materials and reliable output suitable for marine environments when properly installed and maintained. Its high-quality construction and tested components deliver steady charging to support starting, accessories, and onboard electronics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-quality materials chosen for longevity and corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003e65A charging capacity to support typical marine electrical loads.\u003c\/li\u003e\n  \u003cli\u003eInternal regulator provides consistent voltage control under load.\u003c\/li\u003e\n  \u003cli\u003eEngineered to meet OEM form, fit, and function for listed replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow can I confirm this is the correct part before buying?\u003c\/h3\u003e\n\u003cp\u003eAlways verify fitment against your engine model, year, pulley type, and OEM part numbers. Use the part cross-reference list and any confirmed-fit tools on the retailer site to avoid returns and ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompare your OEM number to the provided cross-reference list in the product description.\u003c\/li\u003e\n  \u003cli\u003eVerify 6-groove pulley and 65mm OD on your current alternator.\u003c\/li\u003e\n  \u003cli\u003eCheck rotation (CW) and regulator type (internal) against your system.\u003c\/li\u003e\n  \u003cli\u003eInspect connector types and mounting pattern visually before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The DB Electrical 400-12151 alternator is intended for boat owners, marine mechanics, and stern-drive service shops needing a dependable direct-replacement alternator for Mercruiser engines listed above. It suits anyone who wants a like-for-like, 12V 65A unit that matches OEM mounting, pulley specifications, and electrical characteristics — ideal when restoring charging performance on compatible inboard, stern drive, or ski engines.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFeature summary:\u003c\/li\u003e\n  \u003cli\u003eRELIABLE PERFORMANCE: Dependable charging output for marine applications.\u003c\/li\u003e\n  \u003cli\u003eHIGH-QUALITY CONSTRUCTION: Materials chosen for durability and longevity.\u003c\/li\u003e\n  \u003cli\u003eEASY INSTALLATION: Direct-fit design with no vehicle modifications for compatible models.\u003c\/li\u003e\n  \u003cli\u003eCOMPATIBILITY: Matches Mercruiser 6-groove pulley 65mm OD applications listed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the 400-12151 a direct replacement for Mercruiser 350 Mag MPI?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this alternator is listed as a compatible direct-fit for Mercruiser 350 Mag MPI models with a 6-groove pulley and 65mm OD.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the electrical output and rotation of this alternator?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It is a 12V alternator rated at 65 amps with clockwise (CW) rotation and an internal regulator.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DB Electrical","offers":[{"title":"Default Title","offer_id":48080231432350,"sku":"B00KGIDNFK","price":198.17,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/db-electrical-front-view.jpg?v=1785779930","url":"https:\/\/northtrailauto.ca\/products\/db-electrical-12v-65a-alternator-for-mercruiser-350-454-5-7l-direct-fit-internal-regulator","provider":"North Trail Auto","version":"1.0","type":"link"}