---
product_id: 7646043
title: "ACDelco Professional C603Z (12336870) Current and Voltage Regulator"
brand: "acdelco"
price: "¥17011"
currency: JPY
in_stock: true
reviews_count: 13
category: "Ac Delco"
url: https://www.desertcart.jp/products/7646043-acdelco-professional-c603z-12336870-current-and-voltage-regulator
store_origin: JP
region: Japan
---

# Precise voltage control Vehicle-specific fit Made in USA quality ACDelco Professional C603Z (12336870) Current and Voltage Regulator

**Brand:** acdelco
**Price:** ¥17011
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your drive with precision and pride!

## Quick Answers

- **What is this?** ACDelco Professional C603Z (12336870) Current and Voltage Regulator by acdelco
- **How much does it cost?** ¥17011 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/7646043-acdelco-professional-c603z-12336870-current-and-voltage-regulator)

## Best For

- acdelco enthusiasts

## Why This Product

- Trusted acdelco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Noise-Free Power Delivery:** Advanced radio noise control for uninterrupted audio and electronics performance.
- • **Tailored Fit, Zero Hassle:** Vehicle-specific design ensures seamless installation and perfect compatibility every time.
- • **Dependability You Can Count On:** Maintains battery charge and powers accessories, so your ride never misses a beat.
- • **Trusted American Craftsmanship:** Proudly made in the USA, combining reliability with premium aftermarket value.
- • **Engineered for Peak Performance:** Delivers stable voltage to keep your vehicle’s electrical system flawless under all conditions.

## Overview

The ACDelco Professional C603Z Voltage Regulator is a premium aftermarket replacement designed to provide precise voltage control, ensuring your vehicle’s electrical systems operate smoothly. Engineered for a perfect vehicle-specific fit, it offers superior radio noise suppression and reliable battery maintenance. Made in the USA, this regulator combines trusted craftsmanship with dependable performance to keep your engine and accessories running flawlessly.

## Description

An ACDelco Professional, premium aftermarket Voltage Regulator is a high quality replacement for many vehicles on the road today. It monitors the proper voltage to your vehicle's critical systems as the starting and charging system starts the engine, maintains the battery's charge, and provides power to the electrical accessories while the engine is running. An ACDelco Professional Voltage Regulator provides outstanding radio noise control for better performance, delivers needed system voltage, and provides the proper fit and function to let your vehicle run the way it was designed. This premium aftermarket replacement voltage regulator is manufactured to meet your expectations for fit, form, and function.

Review: Pretty decent - It works well enough. I'm using it to replace a broken regulator in the engine computer. With that in mind, the voltage does tend to fluctuate a decent amount with this regulator, especially under heavy load. The voltage gauge will actually wiggle back and forth when the turn signal is on. Otherwise, i've had no issues with this regualtor, you just have to make sure it has a really good ground on the case or you run a high risk of frying it.
Review: Works well, Made in the USA! - I was searching the mopar forums for a reliable voltage regulator and most commented on the reliability of this particular item..( Bonus made in the USA)..and fairly priced as well!!

## Features

- professional, premium aftermarket replacement
- provides the performance and dependability you expect from acdelco
- manufactured to meet expectations for fit, form, and function
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C9QI96 |
| Best Sellers Rank | #244,898 in Automotive ( See Top 100 in Automotive ) #33 in Automotive Replacement Alternator Voltage Regulators |
| Brand | ACDelco |
| Customer Reviews | 4.4 4.4 out of 5 stars (251) |
| Date First Available | July 31, 2007 |
| Exterior | Painted |
| Item Weight | 5.6 ounces |
| Item model number | C603Z |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 12336870 |
| Model | ACDelco - Voltage Regulat (B) (C603Z) |
| OEM Part Number | 12336870 |
| Product Dimensions | 4.7 x 2 x 4.1 inches |

## Images

![ACDelco Professional C603Z (12336870) Current and Voltage Regulator - Image 1](https://m.media-amazon.com/images/I/71Rx5+xEnKL.jpg)
![ACDelco Professional C603Z (12336870) Current and Voltage Regulator - Image 2](https://m.media-amazon.com/images/I/71e7fNK84oL.jpg)
![ACDelco Professional C603Z (12336870) Current and Voltage Regulator - Image 3](https://m.media-amazon.com/images/I/814+XI9sdlL.jpg)
![ACDelco Professional C603Z (12336870) Current and Voltage Regulator - Image 4](https://m.media-amazon.com/images/I/81HKvF5mSFL.jpg)
![ACDelco Professional C603Z (12336870) Current and Voltage Regulator - Image 5](https://m.media-amazon.com/images/I/81epLu3zLVL.jpg)

## Questions & Answers

**Q: What is the warranty term?**
A: Amazon.com Return Policy:Amazon.com.tr Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way.

If you'd like a copy of the manufacturer's warranty for a product found on Amazon.com, you can contact the manufacturer directly or visit their website for more information. Manufacturer's warranties may not apply in all cases, depending on factors like the use of the product, where the product was purchased, or who you purchased the product from. Please review the warranty carefully, and contact the manufacturer if you have any questions.

**Q: What voltage does this regulate at?**
A: It regulates the output voltage of the alternator to 14.2 to 14.5 volts

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pretty decent
*by C***S on July 29, 2023*

It works well enough. I'm using it to replace a broken regulator in the engine computer. With that in mind, the voltage does tend to fluctuate a decent amount with this regulator, especially under heavy load. The voltage gauge will actually wiggle back and forth when the turn signal is on. Otherwise, i've had no issues with this regualtor, you just have to make sure it has a really good ground on the case or you run a high risk of frying it.

### ⭐⭐⭐⭐⭐ Works well, Made in the USA!
*by M***N on June 23, 2024*

I was searching the mopar forums for a reliable voltage regulator and most commented on the reliability of this particular item..( Bonus made in the USA)..and fairly priced as well!!

### ⭐⭐⭐⭐⭐ Will serve as my backup unit
*by P***3 on August 24, 2023*

If you have a Mopar, you’ll want a backup voltage regulator. At 1/3rd the price of the original equipment model, I chose this as a backup only because they are notorious for dying and leaving people stranded. When my original Mopar unit died, I bought two units; one Mopar branded one made in the US, and this one. I will only use this one as a “just in case” backup unit.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-08*