One Stop Solutions 2757 Radiator

Radiator for Silverado and Sierra HD

One Stop Solutions 2757 is a premium replacement radiator built for 2004-2005 Chevrolet Silverado 2500 HD, 2004-2005 Chevrolet Silverado 3500, 2004-2005 GMC Sierra 2500 HD, and 2004-2005 GMC Sierra 3500 applications. It is a crossflow radiator with a plastic tank design, a 2-row core, and an integrated transmission oil cooler for direct-fit cooling performance.

Key Features

• Fits 2004-2005 Chevrolet Silverado 2500 HD and Silverado 3500, plus 2004-2005 GMC Sierra 2500 HD and Sierra 3500
• Crossflow radiator design with 34 1/8 in. core height and 19 7/16 in. core width
• 2-3/16 in. core thickness for OE-style cooling capacity
• Plastic tank construction with PA core material
• Transmission oil cooler included; engine oil cooler not included
• Cadmium-plated tubes and die-cut gasket help reduce premature failure and leaks
• Individually pressure tested during production
• Includes necessary fittings or hardware for installation

Detailed Description

OSC Premium New Automotive Radiator 2757 is engineered to match original equipment form and function for heavy-duty GM truck cooling systems. The radiator uses premium-grade aluminum construction with plated tubes, fitted headers, and factory-spec torquing to support consistent sealing and thermal performance. Its 1 13/16 in. inlet and outlet diameters, 20 11/16 in. header lengths, and 3 1/8 in. header widths are designed around the OE layout for a clean installation and proper hose connection.

This part cross-references APDI 8012757 and Spectra Premium CU2510 for the same application. For buyers searching for a 2004-2005 Chevrolet Silverado 2500 HD radiator or a 2004-2005 GMC Sierra 3500 radiator, part number 2757 provides a direct replacement option with the cooling features needed for towing, hauling, and high-mileage use.

What It Helps Address

• Overheating caused by a worn or restricted radiator core
• Transmission temperature issues related to a failing cooler circuit
• Coolant leaks from aged tanks, seals, or header connections
• Reduced cooling efficiency in high-mileage Silverado and Sierra HD trucks
• Fitment problems from non-OE-style replacement radiators

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet size, and cooler line routing before installation. Flush the cooling system and inspect hoses, clamps, and cooler lines for wear before transferring the new radiator into service. Because this unit is engineered for multi-fit use, confirm the vehicle’s original cooling configuration matches the listed application before final assembly.

Quality Assurance

OSC tests the transmission and engine oil coolers before tank installation, checks the radiator core prior to assembly, and pressure tests the completed unit again after assembly. The design also incorporates enhancements such as added fin density and a thicker core to address heat load in higher-mileage trucks.