Global Parts 2757C Radiator

Radiator for Silverado and Sierra HD

Global Parts 2757C is a replacement radiator for select 2004-2005 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 applications. It is built with an aluminum core and plastic tanks, and it includes a transmission oil cooler for automatic-transmission cooling support.

Key Features

• Part number: 2757C
• Aluminum core with plastic tank construction
• 2-row core design
• Cross-flow radiator layout
• Transmission oil cooler included
• Quick-connect transmission oil cooler fittings
• Inlet diameter: 1.81 in. (45.97 mm)
• Core thickness: 2.2 in. (55.88 mm)
• Core fin quantity: 64 per 4 in.

Detailed Description

This Global Parts radiator is engineered to remove heat from engine coolant and support stable operating temperatures in heavy-duty truck cooling systems. The aluminum core helps transfer heat efficiently, while the plastic tanks provide a common OE-style construction used in many replacement radiators. The integrated transmission oil cooler adds fluid cooling capacity for vehicles equipped with an automatic transmission, making this radiator a direct-fit service part for the listed Silverado and Sierra HD models. Part number 2757C is also referenced in interchange listings for related applications.

What It Helps Address

• Overheating caused by a worn or restricted radiator
• Coolant leaks from aging core or tank assemblies
• Reduced cooling performance in high-load driving
• Transmission fluid temperature buildup in equipped vehicles
• Heat-related drivability issues in 2004-2005 Chevrolet Silverado 2500 HD and GMC Sierra 3500 trucks

Installation Notes and Tips

Verify inlet size, transmission cooler fitting type, and overall radiator dimensions before installation. This radiator uses quick-connect transmission oil cooler fittings and a cross-flow design, so confirm hose routing and cooler line connection points match the original unit. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant mixture after installation. Fits 2004-2005 Chevrolet Silverado 2500 HD, N/A. Fits 2004-2005 Chevrolet Silverado 3500, N/A. Fits 2004-2005 GMC Sierra 2500 HD, N/A. Fits 2004-2005 GMC Sierra 3500, N/A.

Quality Assurance

Global Parts supplies replacement cooling components for service applications, and this radiator is built to match the listed fitment and cooling-system requirements for the covered trucks.