|Manufacturer||Dana Corporation, Long Manufacturing|
|Item Weight||1.76 ounces|
|Package Dimensions||13.62 x 11.42 x 2.83 inches|
|Item model number||4590|
|Is Discontinued By Manufacturer||No|
|Manufacturer Part Number||LNG-4590|
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Long Tru-Cool LPD Transmission Oil Cooler 4590 28,000 GVW
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|Sold By||Oregon Performance Transmission||Transmission Supply||Oregon Performance Transmission||Amazon.com|
|Item Weight||1.76 ounces||1.76 ounces||1.76 ounces||4.00 lbs|
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Protection against #1 cause of transmission failure. Performance-rated for cars, vans and light trucks up to 28,000 lbs. This cooler is rated at 28,000 GVW and measures 11"x11"x1.5". This is a must for Heavy duty applications, from towing to racing, but is recommended for even daily driven vehicles. Heat is what kills an automatic transmission. If you want to extend the life of your transmission and avoid or prolong a costly rebuild, this is very cheap insurance. All parts are included to mount and plumb this cooler. This cooler comes with a manufacturer's limited lifetime warranty.
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Transmission Fluid Temp Test (60* ambient):
OEM Cooler: 150*
Tru-Cool 28k: 130*
If you have a factory GM transmission cooler, the fluid path goes from Transmission > Radiator > Trans Cooler > Transmission. Some people elect to bypass the radiator for more cooling, but I did not. Transmission fluid is heated as it passes through the radiator, essentially removing the need for an external thermal bypass. We have a few brisk days of cold weather here in Colorado, and I didn't want to have to worry about over-cooling the transmission fluid. I wanted something that would keep the transmission cool, but not too cool. This is another reason I didn't chose the 40k cooler. If I lived in an area that rarely saw freezing weather -OR- if I had a vehicle that is known to internally fail, thus causing transmission fluid and coolant to mix... I would bypass the radiator.
Install was very easy on my Sierra. The original transmission cooler lines are 3/8", and I had no issue with the 11/32" on this cooler (that's a whopping 1/32" difference - don't stress over it). The kit comes with everything you need; however, I wasn't aware of all the fittings in the kit before ordering, so I used the Hayden 397 fitting (I honestly may not have needed this fitting, but wanted to be sure I had no snags during installation). The included transmission hose was also of sufficient length. As minor as it may be, I also much preferred the black color of the 28k over the 40k.
In my title I said plates are way better than tubes. This cooler comes with 42 plates the fluid runs through. It is far more efficient than the traditional tubes.
My only complaint was the seller required a signature, which cause me grief.