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🔥 Keep your transmission cool, your performance hotter!
The SINTLY LPD47391 is a robust low pressure drop transmission oil cooler kit designed for heavy-duty vehicles up to 40,000 GVW. Crafted from high-quality brazed aluminum, it offers superior corrosion and heat resistance, ensuring long-lasting performance. Its optimized design reduces pressure drop, enhancing cooling efficiency for cars, vans, light trucks, and RVs. Complete with mounting hardware and backed by responsive customer support, this cooler is a must-have upgrade for professionals demanding reliable transmission protection under heavy loads.











| ASIN | B09F95LXNL |
| Best Sellers Rank | #31,095 in Automotive ( See Top 100 in Automotive ) #14 in Towing Hitch Engine Oil Coolers & Kits |
| Brand | SINTLY |
| Customer Reviews | 3.9 3.9 out of 5 stars (364) |
| Date First Available | October 13, 2021 |
| Item Weight | 5.73 pounds |
| Item model number | LPD47391 40k Transmission Oil Cooler |
| Manufacturer | SINTLY |
| Manufacturer Part Number | Oil Coolers Kits-LPD47391 |
| Model | LPD47391 40k Transmission Oil Cooler |
| OEM Part Number | LPD47391 |
| Product Dimensions | 23.82 x 9.96 x 2.56 inches |
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
C**O
works great for the price
keeps my transmission 20 degrees cooler
R**Y
NOT WORHT IT BAD PRODUCT
its not good at all the lines are made cheap and will burst ,two times i had to get a new transmission due to this cheap china made BS !! ,i even ordered 300 psi transmission line and bammm again it burst and all mt trans fluid came out and blew my transmission....so i ordered a whole new set up and this time the cooler it self started leaking from the seams.so i had enough and got a whole new one .(ZHSYMX British Radiator oil cooler with AN6 fittings .All this was on my 2008 chevy Silverado 5.3
A**O
Complete unit well made
Excellent
H**N
Easy to mount but needs better hose quality!
If you’re mechanically inclined this is a breeze! All fittings and brackets can be bent and manipulated to fit your application. I chose to bend mine to sits about 1/4” from the condenser. I supplied my own self tappers for the brackets. Also buy new hose!! I took a trip to Orielly’s and bought transmission specific hose and used that. So far temps dropped drastically!! I also have the full flow fitting on my transmission. 8L90 2015 GMC Yukon XL Denali. 4 stars only because I needed to get better quality hose!
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
Would definitely buy again for future vehicles
I have one of these installed on a 02 and a 04 silverado 1500. I didnt uses the hose or brass fittings that came with the kit so cant speak on them but they looked fine. I ran 6an line directly from the trans to the cooler and bypassed the radiator. My 02 has a cam and a 3200 stall converter which was causing my trans temp to be around 185-195 just cruising. Since I installed this its normally between 135-150. My 04 is stock and doesn't have a trans temp gauge but im sure its keeping it cooler too.
G**Y
Pissed off
Wouldn't recommend this company. I ordered a transmission cooler from them to fit a 2011 Chevrolet Silverado. What came was not for my truck. Don't know what it would fit. It took awhile for me to get someone to install it and after taking the front end off my truck opened up shipping box and there was no way cooler was going to fit. Return time had expired so I'm stuck with it.
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
3 weeks ago
1 month ago