ACDelco
ACDelco Professional C603Z (12336870) Current and Voltage Regulator
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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 prem…
SpecPicks Verdict
SpecPicks classifies ACDelco Professional C603Z (12336870) Current and Voltage Regulator as a solid pick with broad community endorsement in the power protection category, based on 256 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. ACDelco's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.4★ customer rating
- ✓ professional, premium aftermarket replacement
- ✓ Backed by ACDelco's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key 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
Full Specifications
| Brand | ACDelco |
|---|---|
| Model | ACDelco - Voltage Regulat (B) (C603Z) |
| Exterior | Painted |
| Fit type | Vehicle Specific |
| OEM Part Number | 12336870 |
| Manufacturer Part Number | 12336870 |
Ready to buy?
ACDelco Professional C603Z (12336870) Current and Voltage Regulator is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
Related Power Protection
