One Stop Solutions 2921 Radiator

Radiator for GM Trucks and SUVs

Restore cooling performance with this OSC Premium New Automotive Radiator, part number 2921. It is built to OE form and function with a crossflow design, plastic tanks, and a premium aluminum core for direct replacement service in select Cadillac, Chevrolet, and GMC applications.

Compatible with popular full-size platforms such as the Chevrolet Tahoe, Silverado 1500, Suburban, Avalanche, and GMC Yukon, this radiator is engineered for a clean factory-style fit. The 2921 radiator also includes a transmission oil cooler and is built for vehicles without an engine oil cooler.

Key Features

• OSC Premium new radiator engineered to OE dimensions and function
• Crossflow design with plastic tanks and a premium aluminum core
• Transmission oil cooler included; engine oil cooler not included
• Cadmium-plated tubes inside and out to help resist premature failure
• Die-cut gasket design for leak resistance
• Individually pressure tested during production
• Factory-style fit for hassle-free installation
• Part number 2921 for easy identification

Detailed Description

The OSC 2921 radiator is designed for direct replacement in GM trucks and SUVs that require a 34-inch wide, 1-inch thick crossflow radiator without an engine oil cooler. Core dimensions measure 34 inches high by 17 1/4 inches wide, with 1 5/16-inch inlet and 1 9/16-inch outlet connections. The unit uses a plated transmission oil cooler with 11 1/2 inches between fittings and is built to match OE-style cooling system layout.

This radiator is a practical choice for Chevrolet Tahoe, Silverado 1500, Suburban, Avalanche, and GMC Yukon applications where factory fit and cooling consistency matter. The 2921 part number is also cross-referenced with Spectra Premium CU2423 for the same application.

What It Helps Address

• Overheating caused by a worn or leaking radiator
• Coolant loss from cracked tanks or failed seals
• Reduced cooling efficiency in high-mileage GM trucks and SUVs
• Transmission heat management concerns in vehicles with an integrated cooler
• Fitment issues from non-OE-style replacement radiators

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet sizes, and transmission cooler layout before installation. This unit is listed for vehicles without an engine oil cooler, so confirm your original equipment matches that configuration. The radiator is engineered for drop-in fitment, and all necessary fittings or hardware are included in each unit.

Fits 2007-2014 Cadillac Escalade, N/A; 2002-2005 Cadillac Escalade, N/A; 2000-2014 Chevrolet Tahoe, N/A; 2007-2013 Chevrolet Avalanche, N/A; 2005-2011 Chevrolet Silverado 1500, N/A; 2000-2010 Chevrolet Suburban 2500, N/A; 2000-2010 GMC Yukon, N/A; 2000-2009 Chevrolet Suburban 1500, N/A; 2002-2009 GMC Sierra 1500, N/A; 2000-2007 GMC Yukon XL 1500, N/A; 2002-2006 Chevrolet Avalanche 1500, N/A; 2000-2004 GMC Yukon XL 2500, N/A; 1999-2000 GMC Sierra 2500, N/A.

Quality Assurance

OSC tests the radiator core before assembly, then tests the completed unit again after assembly. Transmission and engine oil coolers are also tested prior to installation into the tank. The design includes engineering updates aimed at improving durability and cooling performance in higher-mileage vehicles.