Aftermarket Denso Voltage Regulator IN437

Specifications MFR:DENSO DIM 1:63.5mm Mtg. Length FEATURE 1:100% New Transpo FEATURE 2:Circuit protected against shorted field, shorted lamp, load dump, battery disconnect NOTE 1:Active lamp function - with output. NOTE 2:*Replaces Denso 126000-1520, -1521, -1730, -2250 w/o LRC SPECS FOR:Denso IR/IF Alternators SPECS:12 Volt, A-Circuit, S-IG-L Terminals, 14.5 Vset, 5 sec. LRC USED ON Lexus (1996-1997) ** Toyota (1993-1999) Replaces Denso 126000-1730, 126000-1750, 126000-1930, 126000-2250, Toyota 27700-11070, 27700-11080, 27700-66040, 27700-75020 LESTER NUMBERS 13409, 13486, 13487, 13489, 13497, 13512, 13536, 13673, 21337, 23053, 23273 UNIT NUMBERS Denso 101211-0200, 101211-0201, 101211-0340, 101211-0350, 101211-0430, 101211-0431, 101211-0432, 101211-0520, 101211-0521, 101211-0522, 101211-0530, 101211-0531, 101211-0590, 101211-0740, 101211-0970, 101211-0971, 101211-0972, 101211-4120, 101211-4121, 101211-4122, 101211-5150, 101211-5160, 101211-5270, 101211-5780, 101211-7000, 102211-5001, 102211-5002; Lexus 27060-66070, 27060-66070-84; Toyota 27060-11270, 27060-11270-84, 27060-11280, 27060-11280-84, 27060-11290, 27060-11300, 27060-11300-84, 27060-11320, 27060-11330, 27060-11330-84, 27060-11330-84, 27060-11340, 27060-11340-84, 27060-35160, 27060-66040, 27060-66070, 27060-66070-84, 27060-67030, 27060-67070, 27060-67110, 27060-72340, 27060-75040, 27060-75040-84, 27060-75100, 27060-75110, 27060-75150, 27060-75150-84, 27060-75150-84, 27060-75170 Vehicle Application Lexus Truck LX450 L6 4.5L 4477cc 1996-1997 Toyota Car Paseo L4 1.5L 1497cc 1993-1999 Tercel L4 1.5L 1456cc 1993-1994 Tercel L4 1.5L 1497cc 1997 Tercel L4 1.5L 1497cc 1999 Toyota Truck 4Runner L4 2.4L 2366cc 1993-1995 4Runner L4 2.7L 2694cc 1997-1999 Land Cruiser L6 4.5L 4477cc 1993-1997 Pickup L4 2.4L 2366cc 1993-1995 T100 L4 2.7L 2694cc 1994-1998 Tacoma L4 2.4L 2438cc 1995-1999 Tacoma L4 2.7L 2694cc 1995-1999 Toyota - Europe Car Corolla (E10) 1300, 4E-FE 1992-1997 Corolla (E11) 1300, 4E-FE 1997-1999 Paseo 1500, 16V 1996-1998 Starlet 1300, 4E-FE 1995-1999 Features & Benefits Precision aftermarket replacement part Regulates alternator output voltage Helps maintain proper battery charging Supports stable charging system performance Manufactured to match original specifications Designed for dependable long-term operation Ideal for alternator rebuilding and repair Cross-referenced to OEM and aftermarket part numbers     What Does a Voltage Regulator Do? The voltage regulator controls the alternator's output by regulating current supplied to the rotor field winding. As electrical demand changes, the regulator continuously adjusts field current to maintain the proper charging voltage for the battery and the vehicle's electrical system. A properly functioning voltage regulator helps prevent battery overcharging and undercharging while protecting sensitive electrical components from excessive voltage. Because charging system performance depends on the interaction between the regulator, rotor, stator, rectifier, and battery, replacing a faulty regulator is an important step in restoring alternator performance.     Common Signs Replacement Is Needed Replace the voltage regulator if you notice: Battery overcharging Battery not charging Low charging voltage High charging voltage Battery warning light illuminated Intermittent charging problems Headlights that brighten or dim with engine speed Charging system failure during testing Voltage regulator failure discovered during alternator rebuilding     Installation Recommendations Installation should be performed by a qualified technician or experienced alternator rebuilder. Before installing the new regulator, inspect the brushes, brush holder, slip rings, rotor, stator, rectifier, wiring, and electrical connections for signs of wear or damage. Always verify connector configuration and mounting style before installation. After assembly, bench-test the alternator to confirm proper charging voltage and overall charging system performance.     While You're Rebuilding Inspect other common wear components to help maximize charging system reliability: Bearings Brushes Brush Holder Slip Rings Rectifier Diodes Rotor Clutch Pulley Insulators     Why Buy From RC Auto Electric? RC Auto Electric specializes in alternator and starter rebuilding components for professional rebuilders, repair shops, automotive technicians, and DIY enthusiasts. Our extensive catalog includes thousands of OEM and aftermarket electrical components backed by accurate cross-reference information to help simplify part identification and reduce ordering mistakes.     Disclaimer Compatibility information is provided as a reference only. Manufacturing revisions, production changes, and previous rebuilding modifications may affect internal alternator components. Always compare the original part, connector configuration, mounting style, voltage specifications, cross-reference numbers, and product photographs before installation. If you are unsure about compatibility, contact RC Auto Electric before ordering.