{"product_id":"high-output-alternator-for-chevrolet-s10-blazer-astro-1998-2000-4-3l","title":"High Output Alternator for Chevrolet S10 Blazer Astro (1998-2000) 4.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Amperage 250A Alternator for 1998-2000 Chevrolet S-10, Blazer, Astro (GMT325\/GMT330)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 250-amp high output alternator replaces the factory charging unit on 1998-2000 Chevrolet S-10, Blazer, and Astro 4.3L models to deliver consistent, heavy-duty electrical current at idle and under high auxiliary loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet S-10, Blazer, Astro Charging System Bottleneck\u003c\/h3\u003e\n\u003cp\u003eFactory Delco alternators installed on the \u003cstrong\u003eVortec 4300 L35\u003c\/strong\u003e engine produce only 100 to 105 amps under ideal conditions, falling below 60 amps at hot idle. When adding aftermarket audio systems, auxiliary off-road lighting, winches, or electric cooling fans, the stock unit suffers from severe thermal saturation. Excessive heat soak degrades the factory diodes and internal regulator, triggering battery warning lights, dimming headlights, voltage drop below 12.8V, and accelerated battery drain.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct bolt-in upgrade, this 250-amp unit utilizes advanced hairpin stator architecture capable of producing a verified 150 amps at idle. Constructed with heavy-gauge pure copper stator windings, a precision-balanced rotor, and low-friction sealed bearings, this unit drastically reduces internal resistance and heat buildup. An internal heavy-duty solid-state voltage regulator maintains a consistent 13.5V to 14.5V output curve under extreme electrical demand, directly mounting to factory brackets without bracket modification.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 High Output 250A 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;\"\u003e1998-2000 Chevrolet S-10, Blazer, Astro\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;\"\u003e4.3L Vortec 4300 (L35) \/ GMT325, GMT330, M-Body\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;\"\u003e190 hp \/ 250 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;\"\u003e8231, 8231N, 8231-5, 10464443, AL8731X, 321-1803, 321-1432, 334-2481\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\u003e1998-2000 Chevrolet S10 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e1998-2000 Chevrolet Blazer 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e2000 Chevrolet Astro 4.3L V6\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 GMT325\/GMT330 S-10, Blazer, or Astro?\u003c\/h4\u003e\n\u003cp\u003eYes, this unit directly bolts onto models equipped with the \u003cstrong\u003eVortec 4300 L35\u003c\/strong\u003e 4.3L V6 engine; it will not fit 2.2L 4-cylinder S-10 trucks.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade my main charging cables with this unit?\u003c\/h4\u003e\n\u003cp\u003eA 1\/0 or 4-gauge \"Big 3\" battery ground and positive charge wire upgrade is strongly recommended to safely deliver the full 250-amp current without thermal line resistance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Truck Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to endure the heavy-duty demands of towing, commercial hauling, and trail recovery, this alternator delivers uninterrupted high-amperage power to keep your Chevrolet truck operating reliably under full accessory load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67898694500600,"sku":"DS-EIXONW3QL","price":337.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-chevrolet-s10-blazer-astro-1998-2000-4-3l-1.jpg?v=1793325291","url":"https:\/\/performancechiptuning.com\/products\/high-output-alternator-for-chevrolet-s10-blazer-astro-1998-2000-4-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}