40k Transmission Oil Cooler lpd47391 Compatible with tru Cool Heavy Duty 40,000 GVW Max - Low Pressure Drop Trans Cooler
Condition: New
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Availability:
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within 30 days
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Color: Silver
Features
- [Application and Compatibility] - The LPD47391 40k Transmission Oil Cooler Kit is specifically designed for heavy-duty vehicles. It is capable of handling a maximum gross vehicle weight (GVW) of 40,000 pounds, making it suitable for various types of large commercial trucks, trailers, and towing vehicles.
- [Low Pressure Drop Design] - This cooling kit incorporates advanced low-pressure drop technology, ensuring minimal pressure loss as the transmission oil flows through the cooler. This effectively reduces energy consumption and system pressure, while enhancing the cooling efficiency of the transmission.
- [Includes Mounting Hardware] - The cooler kit comes with a complete set of mounting hardware, including high-quality bolts, fasteners, and brackets. These components are designed to seamlessly match different vehicle types and installation configurations, simplifying the installation process while ensuring reliable and stable mounting.
- [Advanced Cooling Protection] - This cooler kit utilizes advanced cooling technology to maintain the transmission within the proper operating temperature range. Through efficient heat dissipation and effective heat exchange, it prolongs the lifespan of the transmission, reduces the risk of maintenance and failures, and enhances the overall reliability and fuel efficiency of the vehicle.
- [WARRANTY AND AFTER-SALES] - Transmission Oil Cooler provides lifelong warranty service, we have a strong after-sales team, after the purchase of products you have any questions can contact us at any time, to ensure your shopping worry free.
Material: Aluminum
Brand: Gagsu
Package Information: Tube
Item Weight: 2.84 Kilograms
Recommended Uses For Product: Automotive
Brand Name: Gagsu
Recommended Uses For Product: Automotive
Item Form: Oil
Manufacturer: CIDIA TECHNOLOGY CO., LIMITED
Unit Count: 1.0 Count
UPC: 726312342859
Number of Items: 1
Part Number: LPD47391
Model Number: LPD47391
Included Components: LPD47391
Warranty Description: 3 years
Container Type: Tube
SAE J300 Viscosity Grade: 10W-30
Item Weight: 2.84 Kilograms
Material: Aluminum
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If you place your order now, the estimated arrival date for this product is:
within 30 days
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To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: Silver
I replaced the small factory tow package cooler since my temps were near 200 degrees and would go over 200 degrees pulling my boat. I flipped the bottom bracket around and used a grinder to notch it so I could mount the trans cooler to it (had to slide the cooler to the passenger side a bit to clear the mount for the PS cooler). I used a brake line cutter to cut the factory lines off horizontal, and then used a brake flare tool to slightly flare them. I doubled up on the clamps where the hose connected to the factory lines. On the cooler, I used pipe thread tape around the fittings to ensure no leaks. Pros: seems to be working good. Put about 50 miles on the truck last night on the highway going 80 MPH with the AC running. Temps never got above the halfway mark from 100 to 200 (so I'm guessing that's 150 or 160 degrees). Install took me about 2 hours in my driveway. I used everything included in the kit (had to cut the hose to fit). Cons: fins are really easy to bend. I had to use a small flat blade screwdriver to straighten some of them out after I was done mounting the cooler. Also, the included clamps are cheap. I've got a tiny drip from the return hose where it clamps to the cooler fitting. I'm going to replace that clamp with a clamp from the auto parts store tonight. My advice would be just get 2 packs of small hose clamps from your local auto parts store and use those instead of the included ones. Also that included screws will strip easily at the phillips head. I used a 10mm socket to tighten them. I snapped one off but I guess I didn't drill a large enough pilot hole for it to mount to the bracket on my 2000 Chevy Silverado Z71. I also flushed the transmission while I had the stock cooler off. I used some clear 3/8" hose and ran it into a bucket. I started the truck and while the dark old fluid was coming out I was pouring in new fluid until it was coming out red. Then I installed the cooler, added more fluid, started the truck, and kept adding fluid until it was at the proper level. I think I flushed about 3 gallons (12 quarts) through it to get the dark fluid out. I ended up buying 5 gallons of fluid total (in gallon jugs from Walmart) and I have about a half jug left after the trans was full. If you don't need to flush yours out you won't need as much fluid.
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Reviewed in the United States on June 8, 2023 Reviewed in the United States on June 8, 2023 by Long2757
Color: Silver
I have really heavy wheels and a 7 inch lift. This caused a lot of heat build up to my transmission with temps going past 230 with regular driving & go up to 246 with freeway driving (had hard shifts when temps reached around 210) After installing this cooler with some very aggressive driving on the freeway, temps did not exceed 164. With normal driving temps did not go past 156. The shifts were buttery smooth and the truck would go into overdrives ALOT more smoothly. I did prefill the cooler and hoses with Lucas transmission conditioner instead of using regular atf fluid. Install is so easy with the parts and tools. P.S. I bought my own hose clamps, high quality transmission hose and self drilling screws with high temp gasket maker on the threads on the cooler. & radiator adapter part number 357 (brand starts with an H) Chevy transmission temps should not exceed 190 degrees while driving normally like on road trips. Driving hard for short burst should not go over 210 (showing off) and towing heaving loads should not go over 220. I’m curious how these lower temps are gonna benefit me or not in the long run. I was told that with my heavy wheels plus lift made my truck act as if it was towing full time.
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Reviewed in the United States on June 30, 2024 by Miguel Gallegos
Color: Silver
Why did you pick this product vs others?: I installed this on a 2002 Chevrolet 2500 HD. I plumbed it in series with the radiator. Definitely drop the temperature on the temperature gauge. I’m pretty sure it’s running around 150 or 160°. Never gets past that and I’ve been pulling a heavy overloaded gooseneck. On a cold day, the temperature gauge barely rises. Doesn’t seem to affect my transmission shifts or anything. I may plumb it straight into the transmission by bypassing the radiator. Like I said, I’ve been pulling a trailer sometimes way overloaded. I came across the scale one time weighing about 21,000 pounds. The temperature was barely the one quarter mark on my factory gauge which I’m estimating should be about 150 or 160. Haven’t had any kind of leaks either.
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Reviewed in the United States on July 13, 2025 by ERIC
Color: Silver
DO NOT BUY THIS TRANS COOLER! I had a brand new transmission put into a Yukon Denali built with bigger valves billet transfer case the works cost about 4700 bucks. I figured I’m going all out. Mines as well. Put a big transmission cooler on it. Worst mistake I ever made. Drove to Florida and back from North Carolina and on the way home the cooler developed a leak in the casting draining the transmission fluid completely burnt up a brand new transmission. This thing looks nice, but it is complete junk. Don’t waste your money on this garbage. Seriously buy a good one or you will be stranded.
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Reviewed in the United States on March 30, 2026 by blooberd
Color: Black
I recently had the 700R4 in my 1990 full size Blazer rebuilt. The shop said they flushed out the old trans cooler and lines, but to me they were just raggedy looking, so I decided to replace the lines and cooler to give the rebuilt trans as good of a chance as possible. This cooler was a good price and had good reviews, so I went for it. As you'll see in the pic, it's definitely beefier than the unit that I took off of the truck. I don't know if the previous cooler was OEM, but guessing not since it was held on by those plastic zip thingies. Now for the "fun" part: I expect other squarebody trucks will have the same issue I'm about to describe. This will be GM pickups from '73 to '87 and Blazer/Jimmys up to '91. There is a center supporting bracket that runs smack through the middle of where this cooler needs to go, so you gotta put that thing on a diet. Fortunately the bracket is easy to remove - just one bolt at the top and two at the bottom. Once it's out of the way, just mount the cooler as high up as possible. But watch out for the hood latch - it uses a few inches of space right above the new cooler when the hood is closed. Then just grab the death wheel and chop out a triangle from the bracket to allow clearance for the cooler. Be sure to leave the "lip", since that will need to be bent down and welded to the bracket to give it some structural integrity. Other than that, it's pretty simple stuff. I've taken it on a few test drives and gotten it up to temp, and so far no leaks or other issues. Seems like a good unit, and due to the sheer size of it, plus the larger diameter stainless hoses I added, I expect the trans will be much cooler and happier now.
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Reviewed in the United States on October 31, 2022 Reviewed in the United States on October 31, 2022 by W3rd F3rguson
Color: Black
Great cooler but crappy hose. Would recommend getting a stainless steel braided hose and fittings to make it more reliable. I blew the hose after one day. The fittings held but the actual hose failed.
Reviewed in the United States on August 26, 2025 by Austin
Color: Silver
Works great just DO NOT and i repeat DO NOT USE THE RUBBER HOSES. Will leave you stranded or worse, burnt 4l60 and no one likes that! GET YA SOME BIG THICK GORILLA LINES AND SHE GOOD TO GO HOSS
Reviewed in the United States on March 5, 2026 Reviewed in the United States on March 5, 2026 by Bryce
Color: Silver
Got this after seeing the test video on the Half Fixed Garage YouTube channel. The cooler was tested by itself with integrated radiator cooler bypassed. Temperature sensors before AND after the cooler. Fluid cooling of 30-40 degrees while driving and almost 50-60 degrees of cooling at stop lights. Tested in a duramax with Allison trans.
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Reviewed in the United States on October 27, 2025 by Booner