







❄️ Keep your transmission chill and your ride unstoppable!
The 40k Transmission Oil Cooler LPD47391 is engineered for heavy-duty vehicles up to 40,000 lbs GVW, featuring advanced low-pressure drop technology to optimize cooling efficiency. It comes complete with mounting hardware for easy installation and is designed to extend transmission life by maintaining ideal operating temperatures. Backed by a lifetime warranty, this cooler is a reliable upgrade for trucks, trailers, and towing vehicles seeking enhanced performance and durability.


| ASIN | B0D99MDZ1X |
| Brand | Lucky Seven |
| Customer Reviews | 4.0 4.0 out of 5 stars (126) |
| Date First Available | 31 July 2024 |
| Exterior | Brushed |
| Item Weight | 113 g |
| Item model number | LPD47391 40k |
| Manufacturer | 40k Transmission Oil Cooler |
| Manufacturer part number | LPD47391 40k |
| Model | 40k Transmission Oil Cooler |
| Product Dimensions | 10.16 x 7.62 x 7.62 cm; 113.4 g |
M**8
Good cooler for cheap
Get different hoses! But it's functional and keeps the temps under 200. Used on my 09 Tahoe
E**K
AVOID THE LINES IT COMES WITH
The cooler itself amazing but the lines are horrible the first time the line popped i thought i installed it wrong took it to a shop they used the same line and as i was driving i did not notice the line popped leaving the shop until my truck started idling after trying to speed up causing my transmission to messs up i ordered new lines good one and hope this doesn’t mess anyone else transmisson up avoid the line it comes with dont put it on even just to test it i ended up waisting way more just for trusting this line
K**S
Awesome
Awesome quality. Will be buying 2 more 1 for my son's Tahoe and 1 for his brothers truck.
D**L
Over 1 Year Review GREAT!
Used it on a 2020 Chevy Express 3500 6.0 in my opinion a mandatory upgrade for the van even if lightly loaded. Went from burning trans fluid with very undersized stock trans cooler on a 6L90 to 140-160 degrees. In stop and go traffic on a hot day 90+ with A/C on, max temp. Was 185F trans fluid.
J**N
Bad supplied rubber hose
Cooler works fine but I would 100% not use the supplied rubber hose. Unless you like paying for a trans rebuild twice.
Trustpilot
2 months ago
2 weeks ago