---
product_id: 3168199
title: "Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)"
brand: "hayden automotive"
price: "$230.57"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/3168199-hayden-679-universal-11-rapid-cool-add-on-transmission-cooler
store_origin: EC
region: Ecuador
---

# Compact 11” size Patented turbulation boosts heat transfer Pre-drilled brackets for easy install Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)

**Brand:** hayden automotive
**Price:** $230.57
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay Cool, Tow Hard: The Ultimate Transmission Cooler Upgrade

## Quick Answers

- **What is this?** Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit) by hayden automotive
- **How much does it cost?** $230.57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/3168199-hayden-679-universal-11-rapid-cool-add-on-transmission-cooler)

## Best For

- hayden automotive enthusiasts

## Why This Product

- Trusted hayden automotive brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete Cooling Kit:** Includes cooler, hose, and mounting hardware—everything you need to upgrade your transmission cooling game
- • **Effortless Installation:** Pre-drilled mounting brackets and 19mm hose barb fittings make setup a breeze—no sweat, no hassle
- • **Heavy-Duty Compatibility:** Supports GVWR up to 30,000 lbs and towing up to 10,000 lbs—built for serious haulers
- • **Precision Compact Design:** Sleek 11” x 3/4” profile fits seamlessly with OEM systems
- • **Next-Level Cooling Efficiency:** Patented internal turbulation maximizes heat transfer while minimizing pressure drop—keep your transmission chill under pressure

## Overview

The Hayden 679 Universal 11” Rapid-Cool Transmission Cooler is a premium add-on designed to enhance your vehicle’s cooling system. Featuring a compact plate and fin design with patented internal turbulation, it significantly improves heat transfer while minimizing pressure drop. Compatible with OEM cooler systems for Class A motorhomes and heavy trailers, it supports GVWR up to 30,000 lbs and towing capacities up to 10,000 lbs. The kit includes pre-drilled mounting brackets, hose barb fittings, and all necessary hardware for quick, secure installation.

## Description

Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)

## Features

- Size is 3/4 inch x 11 inch x 11-5/8 inch. Compatible with OEM cooler systems
- Class "A" motor homes, large travel trailers, 5th wheel trailers
- GVWR up to 30,000 pounds, towing up to 10,000 pounds
- Patented internal turbulation increases heat transfer with minimal pressure drop
- Pre-drilled mounting brackets for easy installation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C3BBKS |
| Best Sellers Rank | #111,634 in Automotive ( See Top 100 in Automotive ) #55 in Automotive Replacement Engine Cooler Accessories |
| Brand Name | Hayden Automotive |
| Connector Type | Hose Barb |
| Contact Material | Aluminum |
| Contact Type | Normally Open |
| Customer Reviews | 4.8 out of 5 stars 1,496 Reviews |
| Global Trade Identification Number | 00036752006793 |
| Included Components | Transmission Cooler |
| Item Height | 11.6 inches |
| Item Type Name | Transmission Cooler |
| Item Weight | 2.8 Pounds |
| Manufacturer | Hayden Automotive |
| Mounting Type | Bracket Mount |
| Operation Mode | Automatic |
| UPC | 036752006793 |
| Warranty Description | 1 year or 12K Miles |

## Product Details

- **Connector Type:** Hose Barb
- **Contact Material:** Aluminum
- **Contact Type:** Normally Open
- **Mounting Type:** Bracket Mount
- **Brand:** Hayden Automotive

## Images

![Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit) - Image 1](https://m.media-amazon.com/images/I/71ZL1G9OomL.jpg)

## Questions & Answers

**Q: Is fit on 2007 gmc 2500 hd?**
A: I believe so, buy the additional radiator fitting. Also don’t like mounting to the condenser coil, made my own brackets.

**Q: I have a '04 chevy trailblazer 4.2 i6  4wd with factory trans cooler. looking to upgrade to pull travel trailer. is there anything else i need?**
A: I would leave the factory trans cooler in place and add the Hayden trans cooler in line if at all possible, especially if the factory cooler is a plate and fin cooler.  It will give you that much more extra cooling.

**Q: Did you bypass stock trans cooler on 4runner?**
A: I did it on a Nissan Rogue s , am using both now , but planning on by pass it when I hit the 100 k miles ‘cause usual failure of stock oil cooler and don’t want to get any water in tranny. Hope it helps .

**Q: Will the provided adapter fitting thread into my radiator on my 2003 gmc sierra 4.8?**
A: It comes with a fitting, I’m not sure if it’s universal. I spliced mine into the existing hoses deleting the OEM cooler.

## Frequently Bought Together

- Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)
- Hayden Automotive 253 Metal Mounting Bracket Kit
- Hayden Automotive 106 Transmission Oil Cooler Hose 3/8-IN Diameter x 4.5-FT Length

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**Shop now:** [https://www.desertcart.ec/products/3168199-hayden-679-universal-11-rapid-cool-add-on-transmission-cooler](https://www.desertcart.ec/products/3168199-hayden-679-universal-11-rapid-cool-add-on-transmission-cooler)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-10*