







🚗 Keep it cool, keep it moving!
The Low Pressure Drop Transmission Oil Cooler is designed for heavy-duty applications, supporting vehicles up to 40,000 GVW. With its durable brazed aluminum construction, it offers 15X less flow restriction and 30% more cooling efficiency, ensuring optimal heat transfer and extending the life of your vehicle. Complete with mounting hardware and a worry-free return policy, this cooler is a must-have for any serious driver.







| Size | 3/8 Inch |
| Material | Alloy Steel, Aluminum |
| Brand | KOROP |
| Color | Silver |
| Connector Type | Flare |
| Thread Size | 3/8 |
| Thread Type | NPT |
| Item Weight | 2.65 Kilograms |
| Manufacturer | KOROP AUTO PARTS |
| UPC | 767012051610 |
| Item Weight | 5.84 pounds |
| Package Dimensions | 25.1 x 10.5 x 2.9 inches |
| Item model number | KP47391COOLER |
| Manufacturer Part Number | KP47391COOLER |
| OEM Part Number | 47391, LPD47391, OC-4739-1 |
J**S
great product for price
great product for the price brought my 6l80e temp in my 2010 Tahoe LTZ on 35” tires down over 50 degrees. was running 207 now won’t run over 151 degrees. i would go to auto parts store and get some better hose because the hose they send with the cooler is extremely thin.
J**!
Would recommend
Works good dropped trans temperature by 50 degrees wile towing
T**N
Drastically drops temps.
Dropped my transmission temperatures by a lot.
C**.
Great investment so far
Completely bypassed radiator and ran straight to this cooler on my 5.3 swapped 94 Blazer. Dropped my operating temp 50°F and I have a 6.5” lift and 37s. Supplied hose seems fine, was just long enough, would’ve been nice to have an extra ft or 2. Wish it used a more standard fitting type. It looks like it uses a 3/8 inverted flare, which in my area and online is hard to find, especially when trying to use my 6an lines. Wasn’t hard to install. No leaks as of right now, looks good and blends in in my case.
A**K
Oil & transmission oil
I’m using both I purchased for my race car & it’s working amazingly! Dropped almost 20deg on each
S**U
Worth checking it out.
Worth the money. Was expecting bad quality for the price. But there were no dings or dents in it. The hardware is a bit flimsy though. I had to add a couple spacers to have it sit over the power steering cooler bolt. And cut and flip the oem trans cooler bracket. But it went well and has been working great the past few days.
J**
20 degree trans temp difference on Chevy 1500
20 degree difference in trans temp hauling a 4000lb food trailer up the mountain. Well worth it and simple to install.(2011 Chevy 1500) takes a extra half quart of trans fluid for full fill.
J**.
Cools very well
I installed this on my 04 Duramax, I did have to modify the original lines, and make a good solid bracket to hold the cooler, but that’s to be expected, the trans doesn’t get warm anymore, it used to be 180-190 when being worked hard, with a decent tune, now it hasn’t gotten over 140! Very pleased would recommend! Will be buying more for other projects!!!
Trustpilot
1 month ago
4 days ago