--- product_id: 389070059 title: "ACDelco Professional C603Z Voltage Regulator" brand: "acdelco" price: "576 zł" currency: PLN in_stock: true reviews_count: 5 category: "Ac Delco" url: https://www.desertcart.pl/products/389070059-acdelco-professional-c603z-voltage-regulator store_origin: PL region: Poland --- # ACDelco Professional C603Z Voltage Regulator **Brand:** acdelco **Price:** 576 zł **Availability:** ✅ In Stock ## Quick Answers - **What is this?** ACDelco Professional C603Z Voltage Regulator by acdelco - **How much does it cost?** 576 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/389070059-acdelco-professional-c603z-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 ## Description An ACDelco Professional, premium aftermarket Voltage Regulator is the high quality replacement ideal 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: Works perfectly Review: 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. ## Features - Professional, premium aftermarket replacement - Provides the performance and dependability you expect from ACDelco - Manufactured to meet expectations for fit, form, and function ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000C9QI96 | | Best Sellers Rank | #112,978 in Automotive ( See Top 100 in Automotive ) #20 in Car Voltage Regulators | | Brand | ACDelco | | Customer Reviews | 4.4 4.4 out of 5 stars (246) | | Date First Available | 14 August 2012 | | Item Weight | 159 g | | Item model number | C603Z | | Manufacturer | ACDelco | | Manufacturer Part Number | 12336870 | | Model | ACDelco - Voltage Regulat (B) (C603Z) | | OEM Part Number | 12336870 | | Product Dimensions | 11.94 x 5.08 x 10.41 cm; 158.76 g | ## Images ![ACDelco Professional C603Z Voltage Regulator - Image 1](https://m.media-amazon.com/images/I/71e7fNK84oL.jpg) ![ACDelco Professional C603Z Voltage Regulator - Image 2](https://m.media-amazon.com/images/I/71Rx5+xEnKL.jpg) ![ACDelco Professional C603Z Voltage Regulator - Image 3](https://m.media-amazon.com/images/I/81HKvF5mSFL.jpg) ![ACDelco Professional C603Z Voltage Regulator - Image 4](https://m.media-amazon.com/images/I/81epLu3zLVL.jpg) ![ACDelco Professional C603Z Voltage Regulator - Image 5](https://m.media-amazon.com/images/I/814+XI9sdlL.jpg) ## Questions & Answers **Q: What are the signs of a failing alternator?** A: Common signs of a failing alternator include dashboard warning lights, electrical issues like overly bright or flickering lights, frequently dying battery, whining, grinding or squealing engine sounds, or stalling or struggling to start the vehicle. **Q: Is the solenoid included?** A: Yes. GM Genuine Parts and ACDelco Starters include a solenoid compatible with the unit. **Q: Will GM Genuine Parts and ACDelco Alternators and Starters withstand a wide range of weather conditions?** A: Yes. GM Genuine Parts and ACDelco Alternators and Starters are designed to withstand a wide range of weather conditions. **Q: Do all alternators supply the same amperage?** A: No. Some vehicles require more amperage than others depending on the amount of electronics that need to be operated. Consult your vehicle Owner’s Manual for more information. **Q: Can a bad alternator damage my battery or other electrical components?** A: Yes. The alternator keeps the battery charged and operating correctly. A failing alternator can overwork the vehicle’s battery and lead to permanent electrical damage if not addressed. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by F***E on 7 May 2025* Works perfectly ### ⭐⭐⭐⭐⭐ Review *by C***S on 29 July 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. ### ⭐⭐⭐⭐⭐ Review *by J***F on 12 April 2026* Worked perfectly --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/389070059-acdelco-professional-c603z-voltage-regulator](https://www.desertcart.pl/products/389070059-acdelco-professional-c603z-voltage-regulator) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-24*