{"product_id":"high-output-alternator-for-mercedes-benz-230-240d-280e-300d-1975-1985-2-3l-2-4l-2-8l-3-0l","title":"High Output Alternator for Mercedes-Benz 230 240D 280E 300D (1975-1985) 2.3L 2.4L 2.8L 3.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Amp Direct-Fit Alternator for 1975-1985 Mercedes-Benz 230, 240D, 280E, 300D (W114\/W115, W123, W116, W126)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The high output alternator replaces the factory charging unit on 1975-1985 Mercedes-Benz 230, 240D, 280E, and 300D models to deliver stable 120-amp electrical capacity, preventing idle voltage drop and supporting auxiliary power loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mercedes-Benz Charging Weakness\u003c\/h3\u003e\n\u003cp\u003eFactory Bosch charging systems on vintage \u003cstrong\u003eW114\u003c\/strong\u003e, \u003cstrong\u003eW115\u003c\/strong\u003e, \u003cstrong\u003eW123\u003c\/strong\u003e, and \u003cstrong\u003eW116\u003c\/strong\u003e platforms were engineered for basic analog accessories, typically outputting a meager 55 to 65 amps. Over decades of operation, internal copper breakdown, mechanical brush wear, diode breakdown, and stator heat fatigue throttle charging output. When modern electrical demands are added—such as high-draw electric cooling fans, upgraded audio amplifiers, aftermarket climate blowers, or modern lighting—the OE unit drops well below 13.5 volts at idle. This deficit results in sluggish starter cranking, flickering instrument clusters, failing glow plug cycling on diesels, and chronic lead-acid or AGM battery degradation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 120-amp charging unit is built around heavy-gauge copper stator windings and a precision-balanced rotor to maximize electromagnetic efficiency while mitigating thermal saturation. Designed as a bolt-on replacement for part numbers \u003cstrong\u003e13056\u003c\/strong\u003e and \u003cstrong\u003eAL80X\u003c\/strong\u003e, it integrates premium high-temperature sealed bearings to eliminate bearing whine and shaft play under belt load. An internal solid-state voltage regulator maintains a steady 13.5 to 14.5-volt rail under variable engine RPM, while maintaining factory mounting geometry, OEM pulley alignment, and stock wiring harness orientation for seamless installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 High Output 120A Alternator\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1975-1985 Mercedes-Benz 230, 240D, 280E, 300D\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eOM616, OM617, M110, M115 \/ W114, W115, W123, W116, W126\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e62-182 hp \/ 97-228 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e13056, AL80X, 0120489232, 0120489300, 0120400856, 0120400857\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1975-1978 Mercedes-Benz 230 2.3L\u003c\/li\u003e\n  \u003cli\u003e1975-1983 Mercedes-Benz 240D 2.4L diesel\u003c\/li\u003e\n  \u003cli\u003e1977-1981 Mercedes-Benz 280E 2.8L\u003c\/li\u003e\n  \u003cli\u003e1975-1985 Mercedes-Benz 300D 3.0L diesel\u003c\/li\u003e\n  \u003cli\u003eMercedes-Benz 280, 280C, 280CE, 280S, 280SE of the same era\u003c\/li\u003e\n  \u003cli\u003eMercedes-Benz 300CD, 300SD, 300TD of the same era\u003c\/li\u003e\n  \u003cli\u003eMercedes-Benz 450SE, 450SEL, 450SL, 450SLC of the same era\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the W123 and W115 230, 240D, 280E, 300D?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1975-1985 Mercedes-Benz 230, 240D, 280E, 300D equipped with the \u003cstrong\u003eOM616\u003c\/strong\u003e, \u003cstrong\u003eOM617\u003c\/strong\u003e, \u003cstrong\u003eM110\u003c\/strong\u003e, and \u003cstrong\u003eM115\u003c\/strong\u003e engines using original factory bracket spacing.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade my battery cables to run this 120-amp alternator?\u003c\/h4\u003e\n\u003cp\u003eWhile it utilizes factory mounting and plug connections, upgrading the main charging lead (B+) and chassis ground cables to 4-gauge wire is recommended to handle the higher amperage output without resistive heat loss.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mercedes-Benz Engineering Standard\u003c\/h3\u003e\n\u003cp\u003eClassic Mercedes-Benz platforms demand tight electrical tolerances to protect sensitive factory relays, glow plug timers, and climate servos from damaging voltage sags. Installing a bench-tested, precision-regulated alternator preserves the original electrical architecture while delivering clean, ripple-free power under maximum accessory loads.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67898428129528,"sku":"DS-EKU4ZMXV6","price":290.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-mercedes-benz-230-240d-280e-300d-1975-1985-2-3l-2-4l-2-8l-3-0l-1.jpg?v=1793321209","url":"https:\/\/performancechiptuning.com\/products\/high-output-alternator-for-mercedes-benz-230-240d-280e-300d-1975-1985-2-3l-2-4l-2-8l-3-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}