How to remove and install an Alternator Brush and Voltage Regulator on Lexus ES300?

Place the alternator on a clean bench. Remove the output terminal nut, insulator, rear cover, and brush holder. Detach the voltage regulator. Measure each brush's length, replace if below minimum. Ensure smooth brush movement. Reinstall the voltage regulator, brush holder, and rear cover. Secure the output terminal insulator with the nut. Reinstall the alternator.

Genuine Lexus ES300 Voltage Regulator

Adjustable Voltage Regulator

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5 Voltage Regulators found

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Lexus ES300 Regulator Assy, Generator
Part Number: 27700-46060
$247.07 MSRP: $342.47
You Save: $95.40 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator, Voltage Regulator
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1999-2001 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; MCV20L-BTPGKA
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Lexus ES300 Regulator Assy, Generator
Part Number: 27700-20050
$246.23 MSRP: $341.31
You Save: $95.08 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator, Voltage Regulator
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1997-2003 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; MCV20L-BTPGKA, MCV20L-BTPGKK, MCV30L-BEAGKA
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Lexus ES300 Regulator Assy, Generator
Part Number: 27700-74030
$246.98 MSRP: $342.36
You Save: $95.38 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator, Voltage Regulator
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1992-1994 Lexus ES300 | 6 Cyl 3.0L | 3VZFE; VCV10L-BTMGKA, VCV10L-BTMGKK, VCV10L-BTPGKA, VCV10L-BTPGKK
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Lexus ES300 Regulator Assy, Generator
Part Number: 27700-62010
Product Specifications
- Other Name: Regulator, Voltage Regulator
- Manufacturer Note: TYPE B:REFER TO ILLUSTRATION
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1993-2000 Lexus ES300 | 6 Cyl 3.0L | 1MZFE; MCV10L-BTPGKA, MCV10L-BTPGKK, MCV20L-BTPGKA
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Lexus ES300 Regulator Assy, Generator
Part Number: 27700-46030
Product Specifications
- Replaced by: 27700-72090
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 1992-1993 Lexus ES300 | 6 Cyl 3.0L | 3VZFE; VCV10L-BTMGKA, VCV10L-BTMGKK, VCV10L-BTPGKA, VCV10L-BTPGKK

Lexus ES300 Voltage Regulator

The Lexus ES300 Voltage Regulator maintains the safe range of 13.5 to 14.5 volts in the sedan's charging system so the battery and electronics can remain healthy. This Voltage Regulator is always reading the battery voltage and, by rapid alternator field current changes, increasing or decreasing rotor magnetism to increase or decrease output as demand varies. Early ES300 models, like many cars at the time, were dependent on an external mechanical Voltage Regulator consisting of coils and some contact points, but these points could wear out and allow voltage to spike and overcharge components. As design advanced, Lexus switched to a solid-state electronic Voltage Regulator which replaces moving contacts with fast-acting transistors that can adjust nearly 7,000 times each second for a steadier power and increased component life. Later Lexus ES300 versions have the Voltage Regulator contained within the alternator in order to provide cleaner wiring, and the recent versions allow the engine control computer to monitor temperature and engine load for fine-tuning the charge application, illustrating how Lexus continued to improve ES300 electrical stability.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus ES300 Voltage Regulator available on LexusPartsNow.com. Our OEM Lexus ES300 Voltage Regulator come with the reassurance of the manufacturer's warranty, a hassle-free return policy, and speedy delivery service, all at affordable prices online. Feel free to shop with confidence!

Lexus ES300 Voltage Regulator Parts Questions & Experts Answers

Regulator Assy, Generator
27700-46060
Q: How to remove and install an Alternator Brush and Voltage Regulator on Lexus ES300?
A:
Place the Alternator on a clean bench. Remove the output terminal nut, insulator, rear cover, and brush holder. Detach the voltage regulator. Measure each brush's length, replace if below minimum. Ensure smooth brush movement. Reinstall the voltage regulator, brush holder, and rear cover. Secure the output terminal insulator with the nut. Reinstall the alternator.