| Manufacturer | Hayden Automotive |
|---|---|
| Brand | Hayden Automotive |
| Model | Transmission Cooler |
| Item Weight | 2.75 pounds |
| Product Dimensions | 0.7 x 11 x 11.6 inches |
| Country of Origin | Australia |
| Item model number | 679 |
| Is Discontinued By Manufacturer | Yes |
| Exterior | Machined |
| Manufacturer Part Number | 679 |
| Lift Type | Automatic |
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$49.24
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From the manufacturer
About Us
Since the invention of the transmission cooler by Mr. Perry Hayden in 1961, Hayden has continued to add innovative products to meet the needs of its customers while investing in continuous improvements and maintaining quality.
Hayden Automotive engineers, manufactures and supplies a wide range of products designed to keep your car, truck or performance vehicle running cool. From fan clutches and electric fans to performance oil and transmission coolers, we’ve got what you need to protect your vehicle from damaging and performance robbing heat.
Compare with similar items
This Item  Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit) |  |  |  | |
| Price | -25% $49.24 List: $65.72 | -20% $45.22 List: $56.71 | -14% $50.55 List: $59.07 | -12% $41.98 List: $47.94 |
| Delivery | Get it as soon as Sunday, May 19 | Get it as soon as Sunday, May 19 | — | Get it as soon as Sunday, May 19 |
| Customer Ratings | ||||
| Quality of material | ||||
| Value for money | ||||
| Easy to install | ||||
| Mileage | ||||
| Longevity | ||||
| Sold By | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
| contact material | — | — | Aluminum | Aluminum |
| operation mode | Automatic | Automatic | Automatic | Automatic |
Reviews with images
Keeps the oil cool
Mounted on my Volvo 940 turbo (B230FT/180 HP/aw03-72l automatic transmission) Had first mounted the Hayden 678, but because I regularly pull a heavy horse trailer (4000 lbs), to be sure, the Hayden 679, mounted Also because we went on holiday to the mountains in Austria, Italy and Switzerland.Connected to the return line of the original oil cooler in the radiator. From the Hayden 678, with a shortcut (see photo) reconnected to the return line. The advantage of this is that I can now easily change my transmission oil and that the oil in the original cooler and the Hayden are also refreshed.The Hayden 679 mounted in front of the condenser of the air conditioning in the flow of the radiator and radiator fan (see photo).Have NOT measured the difference in temperature, but have noticed that the automatic gearbox, under the very harsh conditions, continues to shift shock-free. Automatic has now run 186,411 miles.Longevity Hayden 679. I can't judge yet. Haven't had the cooler for that long. But the Hayden 678 still looks like new and I used it for half a year. But have full confidence in the longevity of the Hayden 679.
Top reviews from the United States
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Reviewed in the United States on October 19, 2023
Reviewed in the United States on February 21, 2016
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.
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.
Images in this review
