---
product_id: 425286240
title: "ACDelco gm Genuine Parts 21649 Radiator"
brand: "gm genuine parts"
price: "R19782"
currency: ZAR
in_stock: true
reviews_count: 5
url: https://www.desertcart.co.za/products/425286240-acdelco-gm-genuine-parts-21649-radiator
store_origin: ZA
region: South Africa
---

# Optimized heat transfer aluminum core 15.43 lbs lightweight design Corrosion-resistant durability ACDelco gm Genuine Parts 21649 Radiator

**Brand:** gm genuine parts
**Price:** R19782
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay Cool, Drive Confidently with GM’s Genuine Radiator ⚙️

## Quick Answers

- **What is this?** ACDelco gm Genuine Parts 21649 Radiator by gm genuine parts
- **How much does it cost?** R19782 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/425286240-acdelco-gm-genuine-parts-21649-radiator)

## 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

- • **Effortless Installation:** Designed for a seamless chassis mount fit—get back on the road faster with no hassle.
- • **Lightweight Yet Durable:** At just 15.43 lbs, it balances strength with superior heat dissipation for enhanced efficiency.
- • **Corrosion-Resistant Aluminum Core:** Built to last with advanced aluminum that fights rust and maximizes cooling.
- • **Precision Engineered for GM Vehicles:** GM-recommended OEM replacement ensures perfect fit and peak performance.
- • **Trusted by Professionals & Enthusiasts:** Rated 4.6 stars by 124 users who value reliability and long-term value.

## Overview

The ACDelco GM Genuine Parts 21649 Radiator is a lightweight, corrosion-resistant aluminum radiator designed specifically for GM vehicles. It offers optimized heat transfer for efficient cooling, a perfect OEM fit for easy installation, and long-lasting durability trusted by professionals and enthusiasts alike.

## Description

ACDelco GM Original Equipment Radiators are GM-recommended replacements for your vehicles original components. Radiators are heat exchangers, typically located in the front of the vehicle where air can flow through the fins and dissipate heat. Modern radiators are made from aluminum and plastic, while older vehicles used copper and brass. These radiators are designed to be corrosion resistant with optimal heat transfer characteristics. These original equipment radiators have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

## Features

- Lightweight; the radiators have a positive heat transfer to weight ratio
- Corrosion-resistant aluminum designed core helps optimize the radiators long lasting
- GM-recommended replacement part for your GM vehicle’s original factory component

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B000C9K45U |
| Brand Name | GM GENUINE PARTS |
| Cooler Heatsink Compatibility | Aluminum |
| Cooler Heatsink Material | Aluminum |
| Country Of Origin | USA |
| Customer Reviews | 4.6 4.6 out of 5 stars (124) 4.6 out of 5 stars |
| Global Trade Identification Number | 00036666394900, 00707773890219 |
| Included Components | Radiator |
| Item Type Name | Radiator |
| Item Weight | 15.43 Pounds |
| Manufacturer | ACDELCO |
| Model | 21649 |
| Mounting Type | Chassis Mount |
| Number Of Items | 1 |
| Part Number | 21649 |
| Unit Count | 1 Count |
| Upc | 707773890219 036666394900 |

## Product Details

- **Brand:** GM GENUINE PARTS
- **Cooler heat-sink material:** Aluminum
- **Item weight:** 7 kg
- **Mounting type:** Chassis Mount
- **Manufacturer:** ACDELCO

## Images

![ACDelco gm Genuine Parts 21649 Radiator - Image 1](https://m.media-amazon.com/images/I/81K6DPJ-+UL.jpg)
![ACDelco gm Genuine Parts 21649 Radiator - Image 2](https://m.media-amazon.com/images/I/81MTx9acyFL.jpg)
![ACDelco gm Genuine Parts 21649 Radiator - Image 3](https://m.media-amazon.com/images/I/31NTlt7Ab5L.jpg)
![ACDelco gm Genuine Parts 21649 Radiator - Image 4](https://m.media-amazon.com/images/I/71AoURjkYyL.jpg)
![ACDelco gm Genuine Parts 21649 Radiator - Image 5](https://m.media-amazon.com/images/I/713QS-yOw2L.jpg)

## Questions & Answers

**Q: one review stated it came with the oil and transmission cooler is this accurate?**
A: yes this radiator comes with both oil and transmissiom cooler...  perfect fit for my 2005 gmc sierra 1500 denali 6.0 engine

**Q: Is this the large radiator for the 05+ electric fans? 34 inch or the smaller 26 inch for 99-04 fan clutch**
A: 34 inch for 99-04 fan clutch

**Q: B4 order part will fit my 2001 silverado 2500hd 4x4  6.0l gas w/ oem tow package 4dr 8ft longbed  lt trim like be 100% sure fit function oem part**
A: It fit my 2001 suburban 2500 which is the same as your truck all around.  You just have a PU and mine is. Suburban

**Q: I bought this radiator and it appears that it does not have a petcock drain like th original.  Did anyone else find this on theirs?**
A: Mine was the same way. I guess they just come like that.

## Customer Reviews

### ⭐⭐⭐⭐⭐ EOM
*by  on Reviewed in the United States 3 May 2026*

It fit perfectly for 2013 Cadillac Escalade. Easy install

### ⭐⭐⭐⭐⭐ good quality
*by  on Reviewed in the United States 8 April 2025*

good quality, easy to install, the right size as advertised, no leaks, functionable, great value for money, cools transmission temps down as expected, last a long time, basically just like the oem unit

### ⭐⭐⭐⭐⭐ Oem fit and function
*by  on Reviewed in the United States 1 December 2018*

Radiator fit perfect (03 1500hd). No petcock but it's just as easy to pop off the bottom hose to drain the radiator if need be. Also, a petcock is one less place to leak. Radiator was double-boxed and packed securely. Price was way less (<$200) than local part stores for cheap aftermarket units.

## Frequently Bought Together

- GM Genuine Parts 21649 Radiator
- ACDelco Gold 24403L Molded Lower Radiator Hose Item Dimensions =LxWxH = 14.4 x 3 x 3 inches
- ACDelco Gold 26390X Molded Upper Radiator Hose

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**Shop now:** [https://www.desertcart.co.za/products/425286240-acdelco-gm-genuine-parts-21649-radiator](https://www.desertcart.co.za/products/425286240-acdelco-gm-genuine-parts-21649-radiator)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-10-16*