









❄️ Stay cool, drive bold — upgrade your ride’s heart with precision power!
The COOLINGBEST CU2370 is a 34-inch, aircraft-grade aluminum radiator designed as a direct OE replacement for 1999-2014 Chevy Avalanche, Tahoe, Silverado, Suburban, GMC Yukon XL, Sierra, Hummer H2, and Cadillac Escalade models. Featuring a robust 3-row core and dual oil coolers for both engine and transmission, it delivers superior heat dissipation and durability. Precision TIG welding ensures leak-free performance, while its heavy-duty construction withstands harsh driving conditions, making it an essential upgrade for professional-grade cooling efficiency.


























| ASIN | B09MT6DFLC |
| Best Sellers Rank | #1,402,142 in Automotive ( See Top 100 in Automotive ) #7,198 in Automotive Replacement Engine Radiators |
| Brand | COOLINGBEST |
| Customer Reviews | 3.6 3.6 out of 5 stars (39) |
| Date First Available | December 1, 2021 |
| Item Weight | 23 pounds |
| Item model number | COOLINGBEST radiator |
| Manufacturer | CoolingSun |
| Manufacturer Part Number | CoolingSun-0448 |
| OEM Part Number | 15841574 , 20935856 , 22840116 , 22840115, 15841569 , 15841570 ,15193107 , 15841573 |
| Package Dimensions | 42.5 x 24 x 8.5 inches |
A**R
Awesome! Perfect fit! 2001 Sierra 2500HD
This radiator installed in a short amount of time and was a perfect fit in my truck. I got the 4 core and it replaced the leaking factory 1 core. It works perfectly and certainly no worries on overheating.
M**W
bad welds nd customer service
my radiatiors welds started blowing out coolant after just "2 years" really a year and a half, i contacted on the texting amazon thing and was told they needed an additional 80 dollars for shipping, i would not reccomment as the hoses are 20 years old and rubber and the radiator welds blew, i would go with something that has a better warrenty and customer service
J**H
Super cool 😎
Definitely change the thermostat 👌
W**R
Chinese Trash
100% my fault. I didn't do my research. This fan lasted less than 3 weeks. Spend the extra money and buy quality from USA.
J**S
Well made and efficient
Easy install. Fits as it should and has lowered my temperature
A**Y
Subpar to design
Fans are not strong at all on highest speed direct power they move half the air as the factory fan and shroud set up very disappointed.. the radiator itself isn't square the bracket that mounts it are 1 inch offset so it sits on truck crooked... construction is ok but definitely not made with specs in mind...wouldn't buy again. Which socks I have 2 other trucks I want to convert to power fans
J**R
Expensive Junks!
All 3 radiators bend and damaged from factory. Boxes OK. Go somewhere out for good parts.
F**.
Damaged when it arrived reordered another one and it arrived damaged also
Didn’t like was damaged when I got both of them Never got to use them on my caddy
Trustpilot
1 day ago
1 month ago