CU2370 34 Aluminum Radiator for Chevy Silverado and GMC Sierra - OE

In this review of the CU2370 34 aluminum radiator, the bottom line is straightforward: this is a practical, direct-fit replacement for owners of late 1990s to mid-2010s Chevy and GMC full-size trucks and SUVs who need reliable cooling for daily driving or towing. The reviewer found the radiator's main selling point to be its precise OE fit and robust aluminum core that promises dependable heat dissipation and a leak-tested build, making it a sensible choice when an original equipment style radiator starts to fail.

Key Features

• Precise Vehicle Compatibility: Built to match exact fitment for a wide range of Chevy, GMC, Yukon, Escalade and Hummer H2 models to avoid modification during installation.
• OE Replacement Specs: Direct replacement for multiple OEM part numbers so the radiator aligns with factory mounting points and hose connections.
• 32mm Core Thickness: A thicker core construction that improves cooling capacity under heavy loads and towing situations.
• Aluminum Construction: Lightweight, corrosion-resistant aluminum core intended to provide efficient thermal conductivity and long service life.
• Leak-Tested Design: Each unit undergoes pressure testing to reduce the risk of coolant leaks and ensure dependable operation.
• Warranty and Support: Backed by a one-year unlimited mileage warranty and 24/7 customer support for post-purchase assistance.

Who It's For

This radiator suits owners of Chevy Silverado 1500/2500/3500, Suburban, Tahoe, Avalanche, GMC Sierra, Yukon, Yukon XL, Cadillac Escalade and Hummer H2 within the model years listed who want a true OE-style replacement that installs without cutting or adapting factory hoses and mounts. It is also well suited to drivers who tow regularly and need a slightly thicker core to help keep coolant temperatures under control.

Those who should look elsewhere include owners of vehicles outside the stated compatibility list or drivers seeking upgraded performance radiators with larger cores, aftermarket fan shrouds, or specialized heavy-duty cooling packages designed for extreme racing applications.

Pros & Cons

Pros

• Direct-fit design reduces installation time and avoids fabrication work for many Chevy and GMC models.
• Aluminum 26mm core (32mm thickness overall) improves heat dissipation compared with older single-core units.
• Leak-tested and backed by a one-year unlimited mileage warranty for added buyer confidence.
• Compatible with numerous OEM part numbers which simplifies replacement planning.

Cons

• Not a performance-upgrade radiator for extreme motorsport or custom high-horsepower builds.
• Buyers must double-check fitment for each specific engine and year to ensure correct inlet/outlet sizing.

Specifications

Core Height	34 in
Core Thickness	32mm (1.26 in)
Core Width	17-1/2 in
Inlet Diameter	1-5/16 in
Outlet Diameter	1-9/16 in
Fitment	Selected Chevy, GMC, Yukon, Escalade and H2 models (see compatibility)
Warranty	1 year unlimited mileage

Our Verdict

The CU2370 34 aluminum radiator is a sensible, value-focused replacement for owners of compatible Chevy and GMC trucks and SUVs who need a reliable OE-fit unit that resists leaks and improves cooling under load. It is a good buy for everyday drivers and light towing, offering straightforward installation, corrosion-resistant construction and a one-year warranty for peace of mind.

Frequently Asked Questions

Will this radiator fit my Silverado 1500 with a 5.3L engine?
It is designed to fit many 5.3L Silverado 1500 model years listed in the compatibility notes; confirm the exact year and engine variant before ordering.

Does this radiator require modification to factory hoses?
No, this unit is intended as a direct OE replacement that matches factory inlet/outlet diameters to avoid hose modification.

What warranty and support come with the radiator?
The radiator includes a one-year unlimited mileage warranty and access to the manufacturer's 24/7 customer support for assistance.