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❄️ Keep your transmission cool, your ride unstoppable.
The SINTLY LPD47391 40k Transmission Oil Cooler Kit is a robust, low pressure drop cooling solution designed for heavy-duty vehicles up to 40,000 GVW. Crafted from corrosion-resistant brazed aluminum, it ensures superior heat dissipation and durability. Compact and easy to install with included mounting hardware, this cooler is ideal for cars, vans, light trucks, RVs, and towing applications, backed by responsive customer support.











| Manufacturer | SINTLY |
| Brand | SINTLY |
| Model | LPD47391 40k Transmission Oil Cooler |
| Item Weight | 5.75 pounds |
| Product Dimensions | 23.82 x 9.96 x 2.56 inches |
| Item model number | LPD47391 40k Transmission Oil Cooler |
| Manufacturer Part Number | Oil Coolers Kits-LPD47391 |
| OEM Part Number | LPD47391 |
M**N
Works great, trans stays under 160*
Works great so far, it is large and may not fit smaller vehicles but was easy to install on my 03 Chevy avalanche and keeps the transmission under 160* even when towing. I did bypass the radiator built in heat exchanger as I live in the south and do not need a trans heater.
P**R
First cooler to actually drop the temps!
03 Silverado 6.0 gas 4l80. Like most of these trucks, when towing the trans temps creep up higher than I’d like. It would sit a little above 210 depending on ambient temperature. On really hot days it would get up to 250/260. I tried some off the shelf trans coolers and didn’t really notice a change. I bought this bad boy and put 2, 7in fans on the front of it and it sat at about 150 degree while moving. It’s a colder day so we’ll see how it acts in summer but Definitely a great improvement! Only thing i didn’t like is that the fins are very easily bent. Just the slightly touch would bend them. Still, 10/10 would recommend
A**N
Leaks after only a few thousand miles
I purchased this cooler a couple of years ago, and finally got around to installing it last summer on my tow rig. It worked to lower my normal transmission temps by 20-30 degrees F, which I was thrilled with. I've put maybe 2k-3k miles on it since then, as it's not my usual daily driver. I've been driving it for the past couple of weeks, as my daily has been down for repairs, and yesterday when I went to leave work, I noticed a significant pool of transmission fluid under the truck. Upon further review, the cooler has developed a pinhole leak. I'm glad it happened when it did and not while towing on a longer trip, as the transmission would've been destroyed by the loss of fluid. I would not recommend risking your multi-thousand dollar transmission to this trans cooler. It will run cooler, but when it springs a leak and dumps your transmission fluid, and grenades a transmission, you will not remember the $70 price tag as fondly. Even, the cost of the several quarts of fluid that this thing leaked was close to the price of the cooler. Kicking myself for being cheap. It's just not worth it. DON'T BUY!
T**P
Must have for 41TE
Very large, very nice.
M**R
Great Cooler
Cooler is fantastic. Hose not so much. Hose is cheap and will rupture quickly. Buy yourself some good trans cooler Hose and its rock solid.
C**.
Get better line - Evil energy 3/8 j1532. Get stainless band clamps
The install was a breeze and the cooler functions properly. Seeing reviews. I personally would get better line and clamps. Evil energy 3/8 s j1532 rated line. And get stainless band clamps for 3/8 s line. All on Amazon. Using those products and this cooler. I eliminated the heater that comes from the radiator then to this cooler (it's there for when it's below freezing to help get to op temp). Cut the lines back where they meet in a plastic clip. Use a circle pipe cutter. Double band clamp them. push the rubber line 4- 5 inches over the existing metal line and clamp there, with two. Then run your lines to the cooler. In the above photo. Connect the purple line on the radiator-To the yellow connection on the cooler. To bypass the heater. SIGNIFICANTLY REDUCED TEMPS THIS WAY. And peace of mind for not loosing fluid and whipping a transmission.
L**I
Came in clutch
Installed on my 2016 Silverado prior to an 850 mile trip while hauling my C10 just for piece of mind. Halfway through the trip my stock trans cooler cracked as we pulled into the hotel, leaking trans fluid everywhere. I just Re-routed the lines to bypass the stock cooler and use this as the primary. Worked great going through the mountains in 100° weather, this along with the trans TBV kept the temps around 130-140°. 5 months now and no issues whatsoever. For a fraction of the cost that the mishimoto goes for, this does the same job imo. The ONLY thing I needed was additional hose to route it how I wanted. $14 for an additional 5ft of hose at NAPA.
W**9
Great upgrade, stock one is 1/3 the size. Massive difference
Easy install, fits in stock location, very affordable, my truck was a 99 4.8 4x4 gmt800
G**I
ممتاز جدا ورائع وجودي عالية
ممتاز ورائع
S**.
Grate
Let's Just say tru-cool is overpriced
و**ف
منتج تالف
منتج تالف
A**D
Cheap Quality
Cooler start to leak after 8 months ... cheap quality.
A**D
Never buy this poor cooler
This cooler stops working after 10 days only
Trustpilot
2 weeks ago
1 week ago