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❄️ Keep your transmission chill and your ride unstoppable!
The Hayden Automotive 678 Rapid-Cool Plate and Fin Transmission Cooler is a compact, high-efficiency cooling solution designed for heavy-duty vehicles. Featuring patented internal turbulation technology and robust brass fittings, it ensures superior heat transfer with minimal pressure loss. This all-inclusive kit supports GVWR up to 24,000 lbs and towing up to 5,000 lbs, making it ideal for pickups, vans, and Class C motorhomes. Engineered for easy installation and reliable performance, it’s a must-have upgrade for any serious driver looking to extend transmission life and maintain peak performance.

| ASIN | B000C3DDKO |
| Best Sellers Rank | #11,772 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Engine Cooling & Heating Coolers |
| Brand | Hayden Automotive |
| Brand Name | Hayden Automotive |
| Connector Type | Hose Barb |
| Connector type | Hose Barb |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Contact material | Brass |
| Contact type | Normally Open |
| Customer Reviews | 4.6 out of 5 stars 18 Reviews |
| 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 |
| Mounting type | Screw Mount |
| Operation Mode | Automatic |
| Operation mode | Automatic |
| Part Number | 678 |
| Specification Met | UL |
| UPC | 036752006786 |
S**K
Solid product (buy extra hose)
Installed it recently, seems to be working well, it came with a very short hose, though, so I had to buy an extra hose in my case to work with Altima 2017.
A**R
منتج رهيييب
انصح به بقوه ركبته على التيما ٢٠١٦ وما شاء الله فرق كبير .. بس لازم تشتري قواعد معدنية لتثبيت المبرد و الهوز كان قصير تقدر تدمجه مع القديم وتركبه ( عندي ملاحظة الكرتون يجي الملصق مفتوح بس كل شي كان داخل الكرتون والمنتج غير مستخدم )
M**N
Good quality with good price
It was easy to install in my rav4. And it did what it made for, it reduces the transmission temperature by about 20 degrees. Recommended for crossovers with small cooler like the rav4, it will shift better and hopefully last longer.
I**N
Damaged parcel
Package was already unsealed. Other than that Hayden coolers are excellent.
Trustpilot
4 days ago
1 month ago