---
product_id: 24394914
title: "ACDelco GM Genuine Parts 15128978 Alternator"
brand: "gm genuine parts"
price: "€ 590.17"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fr/products/24394914-acdelco-gm-genuine-parts-15128978-alternator
store_origin: FR
region: France
---

# Perfect fit for GM models 100% new OEM-grade build Tested to GM durability specs ACDelco GM Genuine Parts 15128978 Alternator

**Brand:** gm genuine parts
**Price:** € 590.17
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your GM with confidence — OEM quality that never quits!

## Quick Answers

- **What is this?** ACDelco GM Genuine Parts 15128978 Alternator by gm genuine parts
- **How much does it cost?** € 590.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/24394914-acdelco-gm-genuine-parts-15128978-alternator)

## Best For

- gm genuine parts enthusiasts

## Why This Product

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

## Key Features

- • **Wide Compatibility:** Fits top GM models like Escalade, Silverado, Tahoe, Yukon, and more
- • **Unmatched Durability:** Components rigorously tested to exceed GM’s demanding standards
- • **Trusted GM OE Quality:** Manufactured to GM Original Equipment specifications ensuring reliability
- • **Ready to Power Your Ride:** Lightweight yet robust design at just 14.33 lbs for optimal performance
- • **Precision Engineered for GM:** Exact replacement matching original factory specs for seamless integration

## Overview

The ACDelco GM Genuine Parts 15128978 Alternator is a 100% newly manufactured, GM-recommended replacement alternator engineered to meet original equipment specifications. Designed for durability and perfect fit, it supports a range of GM vehicles including Escalade, Silverado, Tahoe, and Yukon, ensuring reliable power delivery and long-lasting performance.

## Description

ACDelco 15128978 GM Original Equipment Alternator

## Features

- 100% newly manufactured as an exact replacement for your GM vehicle’s original alternator
- Components are tested to meet original specification requirements for remarkable durability
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specifications for fit, form, and function

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ACDelco |
| Brand | GM Genuine Parts |
| Model | Escalade, Avalanche, Siverado, Suburban, Tahoe, Sierra, Yukon |
| Item Weight | 14.33 pounds |
| Product Dimensions | 9.5 x 8 x 8 inches |
| Item model number | 15128978 |
| Exterior | Painted |
| Manufacturer Part Number | 15128978 |
| OEM Part Number | 15128978 |

## Images

![ACDelco GM Genuine Parts 15128978 Alternator - Image 1](https://m.media-amazon.com/images/I/61h6PGEc+PL.jpg)
![ACDelco GM Genuine Parts 15128978 Alternator - Image 2](https://m.media-amazon.com/images/I/41FaiDppsnL.jpg)
![ACDelco GM Genuine Parts 15128978 Alternator - Image 3](https://m.media-amazon.com/images/I/31q2748y52L.jpg)

## Questions & Answers

**Q: What is the warranty on this item?**
A: I don't know, I never had to use the warranty.

**Q: Will this be a direct replacement fot the dr44g 145 amp alternator? i have an 05 gmc sierra 5.3.**
A: Well that is 160 amp alternator. Well what I did was punch up the year and model of vehicle and it would definitely tell you if it's the right part for your vehicle. For example punch up alternator for 2005 GMC Sierra and it will let you know which ones fit your vehicle. Ik you might know this already, plz do not get used parts. I just bought a used alternator and had to send it back.

**Q: Will this fit a 1972 oldsmobile cutlass with a 455ci engine?**
A: Nope.  Wiring and plugs are not the same.

**Q: What is the voltage?**
A: Voltage is 13.9. Amp output is 167 amps.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as intended.
*by T***R on May 18, 2013*

My battery kept dying in a few days, and a check with an ammeter determined that my alternator was to blame (current was flowing backwards through the rectifier when the motor was off).The original alternator was a 145 Amp AD-244, but I noticed it had the same plug as this one. I had to get the correct serpentine belt. The install was incredibly easy, taking less than 15 minutes -- now I can leave it parked for over a week without any problems. This alternator also does a much better job running all of the trucks accessories at low engine RPM. With the original alternator, the blower motor would slow and the lights would dim when I racked the steering wheel back and fourth while idling. Not any more -- this alternator handles everything with ease.

### ⭐⭐⭐⭐⭐ oem part
*by P***S on August 16, 2021*

perfect fit works like the original very happy with purchase

### ⭐⭐⭐⭐⭐ GREAT OEM Replacement item!
*by C***4 on December 27, 2017*

Great AC Delco OEM Replacement. I replaced the factory installed alternator on my Escalade with 123,000 miles because of a low speed idle causing some inferior light flickering. I determined it was just the voltage regulator, but opted to replace the entire alternator anyways. This bolts right up to the 2005 Cadillac 6.0L brackets, works perfect, and eliminated the lower RPM interior lights from flickering. A great item.

## Frequently Bought Together

- ACDelco GM Genuine Parts 15128978 Alternator
- ACDelco GM Original Equipment 12637204 V-Ribbed Serpentine Belt
- ACDelco Gold 38158 Drive Belt Tensioner Assembly with Pulley, Aluminum w/ Black Pulley

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-24*