Radiator for Chevrolet Silverado (2008-2013) 4.8L 5.3L 6.0L

Heavy-Duty 3-Row All-Aluminum Radiator for 2008-2013 Chevrolet Silverado (GMT900)

What it Does: The 3-row all-aluminum radiator replaces the failure-prone factory plastic-tank assembly on the 2008-2013 Chevrolet Silverado to maximize thermal rejection, eliminate crimp leaks, and maintain stable operating temperatures under heavy towing loads.

The Stock Chevrolet Silverado Cooling Limitation

Factory GMT900 radiators are constructed using a stamped aluminum core clamped to molded plastic end tanks with rubber crimp gaskets. Over time, repeated thermal expansion cycles cause the plastic end tanks to embrittle and develop hairline fractures, particularly around the 1 5/16-inch upper inlet neck and crimp seams. Additionally, factory single- and dual-row cores struggle with thermal saturation and heat soak during high-ambient operation or heavy payload hauling, compromising both engine block and transmission cooling circuits.

The Engineering Solution

This direct replacement cooling assembly features a high-efficiency 3-row crossflow core constructed entirely from aircraft-grade aluminum, joined to heavy-gauge end tanks with precision TIG welds to permanently eliminate mechanical crimp seam failures. The oversized 34-inch wide by 17 1/4-inch high core increases liquid volume and cooling fin contact area compared to standard 28-inch units. It integrates heavy-duty cooling circuits internally, featuring an integrated transmission fluid cooler on the passenger side and an auxiliary engine oil cooler on the driver side to stabilize high-temperature driveline fluids.

What's Included

• 1x 3-Row All-Aluminum Crossflow Radiator with Integrated Transmission and Engine Oil Coolers

Technical Specifications

Compatibility

• 2008-2013 Chevrolet Silverado 4.8L V8
• 2008-2013 Chevrolet Silverado 5.3L V8
• 2008-2009 Chevrolet Silverado 6.0L V8

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT900 Silverado?

Yes, this is a direct fit for the 2008-2013 Chevrolet Silverado equipped with the Gen IV Vortec 4.8L, 5.3L, and 6.0L engines. This unit does not fit 2010-2013 Chevrolet Silverado 1500 6.0L models, and requires verification of the 34-inch core length between tanks prior to purchase.

How do I confirm core size before ordering?

Measure the finned core width between the aluminum end tanks; this unit strictly replaces the 34-inch core size and will not fit trucks equipped with the smaller 28-inch radiator core.

The Chevrolet Hauling Caliber

Engineered for high-demand work trucks, this heavy-duty aluminum assembly provides the structural rigidity and thermal margin required for severe-duty hauling, payload carrying, and extended highway towing.