{"product_id":"high-output-alternator-for-mazda-rx-7-1989-1991-1-3l","title":"High Output Alternator for Mazda RX-7 (1989-1991) 1.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Output 160A Alternator for 1989-1991 Mazda RX-7 (FC3S)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The High-Output 160A Alternator upgrades the factory charging system on the 1989-1991 Mazda RX-7 to deliver consistent system voltage and eliminate electrical sag under demanding accessory loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mazda RX-7 Charging Weakness\u003c\/h3\u003e\n\u003cp\u003eFactory Series 5 \u003cstrong\u003eFC3S\u003c\/strong\u003e charging systems rely on an aging 80-amp unit that fails to support modern electrical demands. Severe engine bay thermal soak typical of the \u003cstrong\u003e13B\u003c\/strong\u003e rotary engine degrades the factory internal rectifier and regulator diodes. Under low-RPM idle conditions with active loads—such as dual electric fan swaps, high-flow fuel pumps, and aftermarket ignition systems—the stock unit allows voltage to drop below 12.5V, triggering weak spark energy, ignition breakup, and unstable idle control.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered and manufactured in the USA, this 160-amp direct replacement doubles the factory current threshold to provide robust current delivery throughout the entire rev spectrum. Built with heavy-gauge high-conductivity copper windings, heavy-duty insulated brush assemblies, and premium low-friction bearings, this unit dissipates internal heat efficiently. It stabilizes system voltage at a consistent 14.2V to 14.6V under peak electrical demand, maintaining optimal injector pulse width, ignition coil dwell times, and sensor telemetry on both naturally aspirated and turbocharged rotary applications.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x High-Output 160-Amp 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: solid font-size: min-width:\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;\"\u003e1989-1991 Mazda RX-7\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;\"\u003e13B Rotary \/ FC3S\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;\"\u003e160 hp \/ 140 lb-ft (NA) - 200 hp \/ 196 lb-ft (Turbo II)\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;\"\u003eN350-18-300, N350-18-300B, N350-18-300A, 13237N, A2T17574, N350-18-300R, N350-18-300R-00, 13237\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\u003e1989 Mazda RX-7 1.3L 13B (Base, GTUs, GXL, Convertible, Turbo II)\u003c\/li\u003e\n  \u003cli\u003e1990 Mazda RX-7 1.3L 13B (Base, GTUs, GXL, Convertible, Turbo II)\u003c\/li\u003e\n  \u003cli\u003e1991 Mazda RX-7 1.3L 13B (Base, Coupe, Convertible, Turbo II)\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 FC3S RX-7?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1989-1991 Mazda RX-7 equipped with the \u003cstrong\u003e13B\u003c\/strong\u003e engine, mounting cleanly to factory \u003cstrong\u003eFC3S\u003c\/strong\u003e mounting brackets without fabrication.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade the main charging cable?\u003c\/h4\u003e\n\u003cp\u003eYes, installing a fused 4-gauge or 2-gauge battery charge lead (Big 3 upgrade) is strongly recommended to safely carry the increased 160-amp capacity without excessive line resistance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mazda Rotary Performance Standard\u003c\/h3\u003e\n\u003cp\u003eHigh-revving rotary engines depend on consistent ignition voltage to prevent misfires under boost and high load. This heavy-duty alternator upgrade ensures uninterrupted electrical delivery, protecting your apex seals and maximizing high-RPM rotary power.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565774078200,"sku":"DS-EBPCFKIGG","price":236.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-mazda-rx-7-1989-1991-1-3l-1.jpg?v=1791074675","url":"https:\/\/performancechiptuning.com\/products\/high-output-alternator-for-mazda-rx-7-1989-1991-1-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}