40k Transmission Oil Cooler LPD47391, Heavy Duty 40,000 GVW Max, Low Pressure Drop, Compatible with Tru-Cool,Includes Mounting Hardware-Ideal for Heavy Vehicles,40,000 GVW transmission cooler (Silver)
Condition: New
Buy Now, Pay Later
As low as
$11.46
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Wednesday, May 6
Recently Viewed
Color: silver
Features
- [Application and Compatibility] The LPD47391 40k Transmission Oil Cooler Kit is engineered for heavy-duty vehicles, with a maximum GVW of 40,000 lbs. Transmission cooler,Perfect for large trucks, trailers, and towing vehicles, it ensures your vehicle runs cooler and more efficiently.
- [Low Pressure Drop Design] LPD47391 40k Transmission Oil Cooler Kit,With advanced low-pressure drop technology, the cooler minimizes energy consumption and system pressure loss, maximizing transmission efficiency while protecting critical components from excessive heat.
- [Includes Mounting Hardware] The LPD47391 40k Transmission Oil Cooler Kit includes all essential mounting hardware bolts, fasteners, and brackets designed for various vehicle types. With simple installation, youll have a secure, stable fit for long-term reliability.
- [Advanced Cooling Protection] LPD47391 40k Transmission Oil Cooler Kit,Designed for advanced cooling protection, this kit maintains optimal transmission temperature, prolonging its lifespan, enhancing fuel efficiency, and reducing the risk of costly repairs.
- [After-Sales Support] Backed by a lifetime warranty, the LPD47391 cooler offers peace of mind. Our dedicated support team is available anytime to assist with any issues, ensuring your satisfaction.
Manufacturer: 40k Transmission Oil Cooler
Brand: Lucky Seven
Model: 40k Transmission Oil Cooler
Item Weight: 4 ounces
Product Dimensions: 4 x 3 x 3 inches
Item model number: LPD47391 40k
Exterior: Brushed
Manufacturer Part Number: LPD47391 40k
Date First Available: July 12, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, May 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
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.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Color: silver
Had this trans cooler on my truck for at least 6 months now and it has not given my a sing issue. The install was simple. I installed this on my 99 Silverado for my built 4l60e and have seen my trans temps stay low even after doing hard pulls. Amazing price and quality
Reviewed in the United States on January 11, 2026 by Brandon Durden
Color: silver
I had my doubts buying this but it has proved me wrong. Cools very well and has held up good for about 2 months in
Reviewed in the United States on March 25, 2026 by Josh Fowler
Color: silver
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
...
show more
Reviewed in the United States on April 2, 2026 by Edrick
Color: Black
It was really hot. We were stuck in a tunnel in Boston. Boston is hell at rush hour. We knew this...we went anyway. We were hauling a big trailer with a 1985 Chevy pick up. It's old. We're old too. We knew it was a lot to ask of this truck, so installed this transmission cooler. The truck didn't over heat! We didn't have to run the heater on a 90 degree day in the tunnel! It still was a horrible trip, but at least made less horrible by a GREAT transmission cooler! On the way home to Maine we avoided Boston, we swung by the White Mountains, and again, the cooler worked great, hauling up those big hills in the White Mountains it performed flawlessly! We would highly recommend!!
...
show more
Reviewed in the United States on October 23, 2025 by Lisa S.
Color: silver
Perfect after-market fit for my 2007 Hummer H2. Well-made and came with all fittings and hardware for a seamless installation in less than an hour.
Reviewed in the United States on March 28, 2026 by Dennis Currie
Color: silver
Bought for multiple trucks and works really good for all uses towing or driving my truck never gets over 140 driving around and never past 165 towing heavy...2015 Chevy 2500hd
Reviewed in the United States on March 11, 2026 by Anogg13
Color: silver
I really liked the cooler itself. It did the trick in reducing my trans temps in my motorhome. After seeing other reviews, I decided to avoid the use of the included hose (which was too short to do much with anyway) - and built myself 3/8 lines with 5/8-18 inverted flare nuts. Those fit fine - but do take a bit of work to get them to seal (that may be an artifact of my flares and not the cooler itself). The only negative I found on the cooler is that it is a pretty soft material - be careful when tightening the inverted flare nuts into the cooler - the attachment female portion bends easily.
...
show more
Reviewed in the United States on October 23, 2025 by Spriggs
Color: silver
Works great! I put it in my Wife's 2018 tahoe as a replacement cooler after her transmission went out. i bypassed the AC condensor cooler that was originally installed. Runs 170 after long drive on highway.
Reviewed in the United States on December 10, 2025 by B Hollis