{"product_id":"high-output-alternator-for-nissan-altima-sentra-2002-2006-2-5l","title":"High Output Alternator for Nissan Altima Sentra (2002-2006) 2.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Output 250-Amp Alternator for 2002-2006 Nissan Altima, Sentra (L31 \/ B15)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 250-Amp High Output Alternator replaces the low-output factory charging unit on the 2002-2006 Nissan Altima and Sentra to eliminate voltage drop and deliver stable 14.4V power under heavy electrical loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Altima,Sentra Charging Limitation\u003c\/h3\u003e\n\u003cp\u003eThe factory 100-amp to 110-amp Hitachi charging units (e.g., \u003cstrong\u003eLR1100-734\u003c\/strong\u003e, \u003cstrong\u003e23100-8J000\u003c\/strong\u003e) found on the \u003cstrong\u003eQR25DE\u003c\/strong\u003e struggle when subjected to aftermarket electronics, upgraded audio amplifiers, auxiliary lighting, or performance cooling fans. Under high electrical demand at idle, the stock diode bridge overheats, causing substantial voltage sag down into the 11.8V–12.2V range. This severe voltage drop impairs ignition coil output, starves fuel pump delivery, and accelerates premature battery wear.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered and manufactured in the USA, this heavy-duty 250-amp alternator features precision-wound, high-temperature copper stators and balanced rotors that provide massive current reserve even at engine idle speeds. It incorporates a heavy-duty rectifier with premium avalanche diodes, an internal low-resistance voltage regulator, and a cast-aluminum housing optimized for heat dissipation. The unit delivers sustained current flow to prevent heat soak failure and maintain charging rail stability without straining the engine bracket mounts.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x 250-Amp High Output 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;\"\u003e2002-2006 Nissan Altima, Sentra\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;\"\u003e\n\u003cstrong\u003eQR25DE\u003c\/strong\u003e (2.5L) \/ \u003cstrong\u003eL31\u003c\/strong\u003e, \u003cstrong\u003eB15\u003c\/strong\u003e\n\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;\"\u003e165–175 hp \/ 175–180 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;\"\u003e334-1464, AL2402X, 210-3148, 913939, 13939N, 13939R, LR1100-734, LR1100-734B, LR1100-734C, 23100-8J000, 13939\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\u003e2002-2006 Nissan Altima 2.5L (Base, S, SL)\u003c\/li\u003e\n  \u003cli\u003e2002-2006 Nissan Sentra 2.5L (SE-R, SE-R Spec V, Limited Edition)\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 L31 Altima and B15 Sentra?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct bolt-on fit for the 2002-2006 Nissan Altima and Sentra equipped with the \u003cstrong\u003eQR25DE\u003c\/strong\u003e 2.5L engine. \u003cstrong\u003eDoes not fit 3.5L V6 (VQ35DE) or 1.8L (QG18DE) models due to completely different casing and mounting offsets.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs a wiring upgrade required to run this 250A alternator?\u003c\/h4\u003e\n\u003cp\u003eYes, performing a \"Big 3\" electrical upgrade using 0-gauge or 4-gauge battery, ground, and charge-lead cabling is required to safely transfer 250 amps without causing harness resistance bottlenecks.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan JDM Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the intense electrical strain of modified \u003cstrong\u003eQR25DE\u003c\/strong\u003e builds, this heavy-duty charging system supplies rock-solid voltage to ignition coils, wideband sensors, and fuel systems under hard acceleration without parasitic drag.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565770539256,"sku":"DS-E4ZX3FIF9","price":303.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-nissan-altima-sentra-2002-2006-2-5l-1.jpg?v=1791074446","url":"https:\/\/performancechiptuning.com\/products\/high-output-alternator-for-nissan-altima-sentra-2002-2006-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}