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  • Plan starts on the date of purchase. Product breakdowns and malfunctions are covered after manufacturer's warranty.
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Return policy: Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
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4-Year Auto Accessory Protection Plan

from Allstate Protection Plans
  • Plan starts on the date of purchase. Product breakdowns and malfunctions are covered after manufacturer's warranty.
  • No additional costs for repairs - parts, labor, and shipping are all included.
  • Cancel anytime, full refund in the first 30 days. Transferable with gifts
  • Easy claims process - file a claim anytime 24/7 via mobile app, online, or phone.

3-Year Auto Parts Protection Plan

from Assurant
  • PLAN STARTS: Plans start date of purchase. Coverage for mechanical breakdowns begins after the manufacturer's warranty expires.
  • COVERAGE DETAIL: 100% functional parts and labor included on products used for normal use, including mechanical and electrical failures, for parts purchased on Amazon within the last 30 days.
  • PLAN BENEFITS: $0 deductible and no hidden fees. Fully transferable if bought as a gift. Not valid on auto parts purchased for commercial use.
  • HOW TO CANCEL: Cancel anytime, full refund within the first 30 days (less any claims paid). To cancel, visit "Your Orders" on Amazon.com and click "Return or Replace Item" next to the protection plan.
FREE delivery Thursday, May 26
Or fastest delivery Monday, May 23. Order within 20 hrs 48 mins
Only 1 left in stock - order soon.
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Hayden Automotive 679 Rapid-Cool Plate and Fin Transmission Cooler, Black, 11 Inch

4.7 out of 5 stars 1,168 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice for "hayden 679"

$52.35
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  • Make sure this fits by entering your model number.
  • Size is 3/4 inch x 11 inch x 11-5/8 inch
  • 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
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Frequently bought together

  • Hayden Automotive 679 Rapid-Cool Plate and Fin Transmission Cooler, Black, 11 Inch
  • +
  • Hayden Automotive 253 Metal Mounting Bracket Kit
  • +
  • Hayden Automotive 106 Transmission Oil Cooler Hose
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From the manufacturer

Product 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.

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Customer Rating 4.7 out of 5 stars (1168) 4.7 out of 5 stars (19) 4.8 out of 5 stars (260) 4.3 out of 5 stars (206) 4.8 out of 5 stars (358) 4.7 out of 5 stars (227)
Price $52.35 $62.25 $159.99 $165.07 $380.95 $13.71
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4.7 out of 5 stars
4.7 out of 5
1,168 global ratings

Top reviews from the United States

Reviewed in the United States on July 23, 2016
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5.0 out of 5 stars Get significant cooler with the 679.
Reviewed in the United States on July 23, 2016
If you're looking at this cooler you are probably concerned that your transmission is getting too hot. This cooler will cool it down significantly. Here's my details.
I have a 2003 Chevy Suburban 2500 with just over 100,000 miles that I recently purchased. I use it around town and tow a 4500# trailer. Recently I was towing in the Northwest hills of Connecticut and the truck's OEM transmission temp gauge showed 200 degrees, which is the highest I had seen. It usually runs around 140 when the temps are below 70 and progressively higher when the outside temperature is greater. The weather has been around 90 for a few week and I see temps of 180 or 185 without a trailer. I decide to add a cooler and seeing reviews it looked like the quality of Hayden was really good. I even called them and they were very helpful suggesting the 678. I opted of the 679 to get even more cooling.
Installing posed some options. My truck came with a factory cooler about 1/3 the size or the 679 and mounted on a plastic brace that was then mounted on an aluminum cross member just behind the grille. In order to efficiently use the OEM cooler I needed a fit kit, which my local Pep Boys carries, so I went there rather than waiting for delivery and got a Hayden kit 390 as the instructions indicated. Good thing I didn't order it, because it turns out I needed a kit 393. When I went back to Pep Boy I decided the scrap the OEM cooler and buy another Hayden 679, which wouldn't need the fit kit, and mount them next to each other. The cooler I bought at Pep Boys was made in Australia and the cooler that came from Amazon was made in Korea, but the quality appeared similar to me. Fully installed, my coolant flows from the transmission to the radiator, then to a Hayden 769 and then another Hayden 679 and back to the Transmission.
Yesterday it was 100 degrees and I took a long drive with no towing load but 6 passengers. Prior to the cooler I would expect to see 185 and the warmest the gauge showed was 150, but was running at 135 most of the time. I would say the two coolers reduced the temps by 40 degrees. Excellent results for an easy job.
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Reviewed in the United States on June 6, 2018
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5.0 out of 5 stars Keeps my muscle car's 4L80E cool at all times
Reviewed in the United States on June 6, 2018
I have a 1980 Pontiac Grand Prix. I removed the stock V6 and replaced it with a 454 big block V8, backed by a 4L80E transmission. When I did my engine swap, I also needed to upgrade the radiator (no surprise); the new one has an internal trans fluid cooler but I opted not to use it. Instead, I purchased this Hayden fluid cooler (it being the largest one I could find at 11"x11") and mounted it a couple inches in front of the A/C condenser (figuring that doing so would promote better airflow through this cooler). I have dual electric fans behind the radiator, and when they are on it seems that some air is drawn through the Hayden cooler.

I've been running with only this fluid cooler for a year and a half now. My aftermarket transmission controller (TCI EZ-TCU) monitors and displays the trans fluid temp, so I am able to know at a glance if there is any reason for concern. But even through the desert heat here in Utah, I have never seen my fluid temp go above 165^ F... ever. This large Hayden cooler does its job very well.

If you are looking for a way to reduce your automatic transmission fluid temperature, my experience says this is a great way to go. The 679 is an excellent value. I would recommend it to anyone.
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25 people found this helpful
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Reviewed in the United States on February 18, 2018
21 people found this helpful
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Reviewed in the United States on November 7, 2017
22 people found this helpful
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