---
product_id: 306757762
title: "Acdelco gm Genuine Parts 20881337 Alternator"
brand: "gm genuine parts"
price: "¥80661"
currency: JPY
in_stock: true
reviews_count: 6
category: "Gm Genuine Parts"
url: https://www.desertcart.jp/products/306757762-acdelco-gm-genuine-parts-20881337-alternator
store_origin: JP
region: Japan
---

# 100% new exact GM replacement GM-recommended factory part Tested to original GM specs Acdelco gm Genuine Parts 20881337 Alternator

**Brand:** gm genuine parts
**Price:** ¥80661
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Up Your Drive with Genuine GM Precision!

## Quick Answers

- **What is this?** Acdelco gm Genuine Parts 20881337 Alternator by gm genuine parts
- **How much does it cost?** ¥80661 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/306757762-acdelco-gm-genuine-parts-20881337-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

- • **Hassle-Free Purchase & Delivery:** Fast, free shipping with easy returns and cash on delivery options available.
- • **Trusted by Thousands of Drivers:** Rated 4.4 stars with proven reliability over 30,000+ km in real-world use.
- • **Seamless Compatibility Guaranteed:** GM-recommended replacement ensures flawless fit and function every time.
- • **Built to Last with OEM-Grade Durability:** Components rigorously tested to meet GM’s exacting durability standards.
- • **Precision Engineered for Peak Performance:** 100% newly manufactured to match your GM vehicle’s original alternator perfectly.

## Overview

The Acdelco GM Genuine Parts 20881337 Alternator is a 100% new, OEM-quality replacement designed specifically for GM vehicles. Tested to meet original factory specifications, it guarantees durability and seamless compatibility. Weighing 6.6 kg and machined for precision, this alternator is a trusted choice with a 4.4-star rating and fast, reliable delivery options.

## Description

Buy Acdelco gm Genuine Parts 20881337 Alternator online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Working :) - Perfect item. (Tahoe 2012 5.8)
Review: This has been on my truck for 30,000km now, works great, not much to say other then that it works lol

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0049Z6WQ8 |
| Best Sellers Rank | #61,170 in Automotive ( See Top 100 in Automotive ) #44 in Automotive Replacement Starters & Alternators |
| Brand | GM GENUINE PARTS |
| Customer Reviews | 4.4 4.4 out of 5 stars (350) |
| Date First Available | 1 January 2024 |
| Exterior | Machined |
| Item Weight | 6.6 Kilograms |
| Item model number | 20881337 |
| Manufacturer | ACDELCO |
| Manufacturer Part Number | 20881337 |
| Model | Alternator |
| OEM Part Number | 20881337 |
| Product Dimensions | 22.1 x 19.56 x 17.78 cm; 6.6 kg |

## Images

![Acdelco gm Genuine Parts 20881337 Alternator - Image 1](https://m.media-amazon.com/images/I/71VgOaSq32L.jpg)

## Questions & Answers

**Q: Product description says, “ Discontinued by Manufacturer.” Is this a reman?**
A: The reman part number is 334-2742A. Anyhow, the AC Delco web site is “www.acdelco.com” and use the “PARTS NUMBER LOOKUP” (found mid-bottom right side, picture box), to find the right alternator.

**Q: Will this fit 2013 gmc k1500 sierra 5.3**
A: This alternator WILL fit your GMC K1500 Sierra 5.3.  Performs excellent!

**Q: Will this work on a 2012 gmc sierra 2500hd 6.0**
A: This alternator will fit your 2012 GMC Sierrra 2500 6.0.  Thank you!

**Q: Voltage regulator how much are they. Do they come separately**
A: The voltage regulator and brush assembly IS replaceable separately... it unscrews from the back of the alternator once you remove the cover...
 It is a Bosch innovation that GM uses on some alternators. Voltage regulator and brush assembly P/N is below:
https://smile.amazon.com/Total-Power-Parts-F-00M-145-314-F-00M-145-328/dp/B09TPDLW12/ref=sr_1_5?crid=1OSQYYU6UXDMA&keywords=F00M145314&qid=1663640870&s=automotive&sprefix=f00m145314%2Cautomotive%2C141&sr=1-5

## Customer Reviews

### ⭐⭐⭐⭐⭐ Working :)
*by C***Y on 1 May 2025*

Perfect item. (Tahoe 2012 5.8)

### ⭐⭐⭐⭐⭐ Review
*by G***N on 21 April 2025*

This has been on my truck for 30,000km now, works great, not much to say other then that it works lol

### ⭐⭐⭐⭐⭐ Review
*by A***O on 15 August 2025*

muy rapida la entrega, funciona muy bien hasta el momento tengo como una semana con el funcionando din inconvenites

## Frequently Bought Together

- ACDelco GM Genuine Parts 20881337 Alternator
- ACDelco GM Original Equipment 12626222 V-Ribbed Serpentine Belt
- GM Genuine Parts 12609719 Drive Belt Tensioner

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-29*