Hitachi

Hitachi ALR0400-HU Voltage Regulator OE Replacement

Ensure Optimal Voltage Regulation for Your Vehicle The Hitachi ALR0400-HU Voltage Regulator is designed to provide stable and reliable voltage control for your vehicle's electrical system. Engineered with precision and durability, this voltage regulator ensures optimal performance and longevity. ...

$61.63*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Ensure Optimal Voltage Regulation for Your Vehicle

The Hitachi ALR0400-HU Voltage Regulator is designed to provide stable and reliable voltage control for your vehicle's electrical system. Engineered with precision and durability, this voltage regulator ensures optimal performance and longevity.

Specifications:

  • Type: Voltage Regulator
  • OE Number: 07K903803

Key Features

All parts supported by a team of product experts based in the United States

Specifications

Product Type
Voltage Regulator
Part Type
OE Replacement
Support Location
United States

Pros & Cons

👍 Pros

  • Restore your vehicle's charging system to original equipment (OE) specifications with a direct replacement part.
  • Benefit from the assurance of a product supported by a team of product experts based in the United States.
  • Ensure reliable voltage regulation, crucial for the proper functioning and longevity of your vehicle's electrical components.
  • Trust in Hitachi's reputation for manufacturing automotive components.
  • Experience straightforward installation as an OE replacement part, designed to fit and function like the original.

👎 Cons

  • As an OE replacement, it's designed to match original specifications, which may not offer performance upgrades for specific applications.
  • Requires professional installation or advanced mechanical knowledge to ensure proper fitment and function within the alternator.
  • The product information does not specify which vehicle makes or models this particular voltage regulator is compatible with.
  • The voltage regulator is a single component, meaning it does not address other potential issues within the alternator or charging system.
  • Without details on material or specific performance metrics, the "OE replacement" designation is the primary indicator of quality.

Frequently Asked Questions

The Hitachi ALR0400-HU is an OE Replacement Voltage Regulator, designed to meet the original equipment specifications for your vehicle.
All parts, including this voltage regulator, are supported by a team of product experts based in the United States.
Its main function is to regulate the voltage within your vehicle's charging system, ensuring a stable electrical supply for various components.
The provided information specifies it as an "OE Replacement" without listing specific vehicle compatibility, so buyers would need to verify fitment for their particular make and model.
While designed as an OE replacement, the information does not explicitly state whether detailed installation instructions are included with the product.
"OE Replacement" means the part is manufactured to the same specifications and quality standards as the original equipment part that came with the vehicle, ensuring a proper fit and function.