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โ๏ธ Keep your transmission chill and your drive unstoppable!
The Lucky Seven 40k Transmission Oil Cooler LPD47391 is a heavy-duty cooling solution designed for vehicles with a maximum GVW of 40,000 lbs. Featuring advanced low-pressure drop technology, it optimizes transmission efficiency by reducing system pressure loss and heat buildup. The kit comes complete with all necessary mounting hardware for easy installation and is backed by a lifetime warranty, ensuring reliable performance and long-term protection for your transmission system.


| ASIN | B0D99MDZ1X |
| Brand | Lucky Seven |
| Customer Reviews | 4.0 4.0 out of 5 stars (139) |
| 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 doesnโt 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
1 day ago
1 week ago