---
product_id: 256678226
title: "Hayden Automotive 678 Rapid-Cool Plate And Fin Transmission Cooler"
brand: "hayden automotive"
price: "¥25390"
currency: JPY
in_stock: true
category: "Hayden Automotive"
url: https://www.desertcart.jp/products/256678226-hayden-automotive-678-rapid-cool-plate-and-fin-transmission-cooler
store_origin: JP
region: Japan
---

# Compact 3/4" x 11" x 9.5" plate & fin design Secure 19mm brass hose barb fittings Patented turbulation tech for max cooling Hayden Automotive 678 Rapid-Cool Plate And Fin Transmission Cooler

**Brand:** hayden automotive
**Price:** ¥25390
**Availability:** ✅ In Stock

## Summary

> ❄️ Keep your ride cool, calm, and unstoppable.

## Quick Answers

- **What is this?** Hayden Automotive 678 Rapid-Cool Plate And Fin Transmission Cooler by hayden automotive
- **How much does it cost?** ¥25390 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/256678226-hayden-automotive-678-rapid-cool-plate-and-fin-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

- • **Compact Powerhouse:** Sleek 3/4 inch x 11 inch x 9.5 inch plate and fin design fits seamlessly in tight engine bays without sacrificing performance.
- • **Trusted & Top-Ranked:** Ranked #1 in Automotive Engine Cooling & Heating Coolers with a stellar 4.6-star rating—join thousands who trust Hayden.
- • **Heavy-Duty Compatibility:** Engineered for pick-up trucks, class C motorhomes, and trailers up to 24 feet with GVWR up to 24,000 lbs and towing capacity of 5,000 lbs.
- • **Turbocharged Heat Transfer:** Patented internal turbulation boosts cooling efficiency while keeping pressure drop minimal—your transmission’s new best friend.
- • **All-Inclusive Installation Kit:** Comes complete with cooler, hose, and mounting hardware—everything you need for a hassle-free upgrade.

## Overview

The Hayden Automotive 678 Rapid-Cool Plate and Fin Transmission Cooler is a compact, high-efficiency cooling solution designed for heavy-duty vehicles including pick-up trucks, class C motorhomes, and trailers up to 24 feet. Featuring patented internal turbulation technology, it maximizes heat transfer while minimizing pressure drop. The kit includes all necessary components for easy installation and supports GVWR up to 24,000 pounds and towing up to 5,000 pounds. Highly rated and top-ranked in its category, it ensures reliable transmission performance under demanding conditions.

## Description

This is a premium style transmission cooler kit. Coolers are a compact plate and fin design. 19 millimeter thick-hose barb fittings offer secure attachment. All rapid coolers include the patented "flow path design" which increases heat transfer while minimizing pressure drop. Kits contain cooler, hose and mounting hardware.

## Features

- Size is 3/4 inch x 11 inch x 9-1/2 inch
- Pick-up trucks and vans, class "c" motor homes , travel trailers to 24 feet
- Gvwr up to 24,000 pounds, towing up to 5,000 pounds
- Patented internal turbulation increases heat transfer with minimal pressure drop

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C3DDKO |
| Best Sellers Rank | #6,496 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Engine Cooling & Heating Coolers |
| Brand Name | Hayden Automotive |
| Connector Type | Hose Barb |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Customer Reviews | 4.6 4.6 out of 5 stars (18) |
| Global Trade Identification Number | 00036752006786 |
| Included Components | Transmisison Cooler |
| Item Type Name | Transmisison Cooler |
| Item Weight | 1.07 Pounds |
| Manufacturer | Hayden Automotive |
| Model | 678 |
| Mounting Type | Screw Mount |
| Number of Items | 1 |
| Operation Mode | Automatic |
| Part Number | 678 |
| Specification Met | UL |
| UPC | 036752006786 |

## Product Details

- **Brand:** Hayden Automotive
- **Connector type:** Hose Barb
- **Contact material:** Brass
- **Contact type:** Normally Open
- **Mounting type:** Screw Mount

## Images

![Hayden Automotive 678 Rapid-Cool Plate And Fin Transmission Cooler - Image 1](https://m.media-amazon.com/images/I/81h6hePwK3L.jpg)

## Questions & Answers

**Q: Is it suitable (in size) for nissan pathfinder?  Or it should be bigger?**
A: Bigger is better especially if it's V6

## Frequently Bought Together

- Hayden Automotive 678 Universal Rapid-Cool 9.5” x 11” Add-On Transmission Cooler – Not for Direct Replacement of the OE Cooler
- Hayden Automotive 253 Metal Mounting Bracket Kit
- Magnefine 3/8" Magnetic Inline Transmission/Power Steering Filter

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**Shop now:** [https://www.desertcart.jp/products/256678226-hayden-automotive-678-rapid-cool-plate-and-fin-transmission-cooler](https://www.desertcart.jp/products/256678226-hayden-automotive-678-rapid-cool-plate-and-fin-transmission-cooler)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-30*