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โ๏ธ Stay cool, drive bold โ the ultimate upgrade your ride deserves!
The CU2423 34 Inch 3 Row Aluminum Radiator is a high-performance, direct-fit replacement designed for 1999-2014 Cadillac Escalade, Chevy Silverado, GMC Yukon, and similar models. Made from aircraft-grade AA5052 aluminum, it delivers 30-45% improved cooling efficiency over stock radiators, features a built-in transmission oil cooler, and ensures durable, corrosion-resistant operation. Precision-engineered for a perfect OEM fit, this radiator offers a hassle-free installation and long-lasting reliability for demanding driving conditions.








| ASIN | B09MT6T9HT |
| Best Sellers Rank | #198,868 in Automotive ( See Top 100 in Automotive ) #332 in Automotive Replacement Engine Radiators |
| Brand | COOLINGBEST |
| Brand Name | COOLINGBEST |
| Cooler Heatsink Compatibility | 1999-2014 Cadillac Escalade, Chevy Silverado, GMC Yukon, etc. |
| Cooler Heatsink Material | Aluminum |
| Customer Reviews | 3.9 out of 5 stars 59 Reviews |
| Included Components | 1 X 3-Row AA5052 Aluminum Radiator |
| Item Dimensions L x W x H | 40.15"L x 21.65"W x 5.31"H |
| Manufacturer | CoolingSun |
| Model | CoolingSun-0440 |
| Mounting Type | Chassis Mount |
| Part Number | CoolingSun-0440 |
| Product Dimensions | 40.15"L x 21.65"W x 5.31"H |
| UPC | 753684771420 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 |
P**A
Great replacement on Yukon
Bought this radiator, due to my wife's plastic tanks on her OEM radiator cracking. This is on a 2014 GMC Yukon XL with the 5.3l. Great looking radiator out of the box. All the welds look good and absolutely no plastic! I did not use the transmission cooler, as I installed a separate transmission cooler on this truck prior to the radiator going bad. Installed was 30 minutes. Very simple. Everything lined up properly. I did put some Teflon tape on the nut that holds the drain plug before install. I also pre fitted the OEM alignment tabs on the the bottom of the radiator before install. This required a small piece of rubber hose over the existing aluminum tabs to secure a snug fit to the OEM alignment bushings. I also trimmed 1/4 of an inch off of the fan shroud. All in all, a very simple install and a fairly well made product. I've only put roughly 500 miles on this radiator since purchased, so I can not speak for longevity, however there are no leaks and it cools sufficiently.
M**E
Good quality
Fits great, looks great, only shaved the bottom of fan off a little but truck has been smashed so probably fine if not. Might keep truck a little too cool if you live in cold places. Michigan has been in 20s and my truck stays at 170 since install.
D**R
Waste
Does not correctly fit a 04 avalanche without some modifications which i did and thought was fine. Temp never got over 160 throughing a check engine light for a open thermostat. Changed thermostat still running cold. This radiator is more for performance use or use with electric fans or use in hot climates. We are starting to get into the cold months here on the east coast and the vehicle doesnt get hot enough to heat the cab. Money wasted
D**E
I'm CoolerThan Before... ๐
This radiator is 100% cooler than the radiator that freakin GM put in my truck. They put a 1 core radiator in my 2002 Chevy Tahoe and last week my vehicle vapor locked because of extreme heatwave that we had. Now my temperature gauge does not go past 160 while I'm driving. I set my custom electric fans to kick on at 185 when idling in traffic & they cool down to 172. So this 3 core/row radiator is doing a excellent job keeping my motor cool and the air conditioner is even colder now also. Awesome!!! I should've been purchased an aluminum three row radiator... I'm waiting for a heatwave day ๐ฅ to come now. It's early July 2025. I believe HOT, MUGGY, HUMID days are definitely coming too... Functionality: Works superb so far... Look: Awesome aluminum look compared to the factory plastic & aluminum... Fit: Fit is perfect. No complaints.
D**N
this is the right item that was in the box
this was the item of the I sent back the box was my new radiator that I bought I used the old box to send you guys that back to you for I have a box and that should be in the comment so no itโs not the wrong item
A**R
The appearance is not perfect.
I t came warped from the welding gig but it fit well and cools extremely well. So other than the appearance. I think it is a very good unit that works extremely well.
J**S
Good investment
So far so good, installed it before taking it about long road trip, Midwest heat had caused issues with my 2004 avalanche unable to properly keep the engine from getting too hot. Installing this took about an hour, ditched the included wiring and temp controller for a dual fan controller that came with a fin probe instead. Over all itโs worked fantastically. There are sharp edges with lead to a lot of small cuts on my hands and a bent piece which was what ever. Definitely good product.
K**N
Greatest product so far.
It's been 4 months and this does not leak or allow my engine to overheat. Beautiful Common Sense idea with no plastic.
Trustpilot
2 weeks ago
1 month ago