One Stop Solutions 2458 Radiator

Radiator for Trailblazer, Envoy, and 9-7x

Restore cooling performance with the One Stop Solutions 2458 radiator, built for O.E. form and function. This downflow radiator uses a premium aluminum core with plastic tanks and an integrated plated transmission oil cooler for direct replacement service on select GM and Saab applications.

Key Features

• Core dimensions: 18 1/16 in. height, 26 5/16 in. width, and 1 in. thickness
• Downflow design with 1-row core construction
• Plastic tanks with premium-grade aluminum core materials
• Integrated transmission oil cooler with plated cooler type
• Inlet diameter: 1 5/16 in.; outlet diameter: 1 9/16 in.
• Engine oil cooler not included
• Pressure-tested during production for leak verification
• Engineered for factory-style fit and cooling performance

Detailed Description

One Stop Solutions part number 2458 is a replacement radiator designed for vehicles that need a direct-fit cooling solution with O.E.-style dimensions and layout. The radiator uses premium-grade aluminum construction with plastic end tanks, cadmium-plated tubes, and a die-cut gasket approach to help maintain a secure seal. It also includes a plated transmission oil cooler and is built to match original cooler design where equipped. This radiator is a practical choice for Chevrolet Trailblazer, GMC Envoy, and Saab 9-7x cooling system service, as well as related applications such as Buick Rainier, Isuzu Ascender, Trailblazer EXT, Envoy XL, Envoy XUV, and Oldsmobile Bravada. The 2458 is cross-referenced to APDI 8012458 and Four Seasons 56557 for the same application.

Vehicle Fitment

• Fits 2002-2009 Chevrolet Trailblazer, N/A
• Fits 2002-2009 GMC Envoy, N/A
• Fits 2005-2009 Saab 9-7x, N/A
• Fits 2003-2008 Isuzu Ascender, N/A
• Fits 2004-2007 Buick Rainier, N/A
• Fits 2002-2006 Chevrolet Trailblazer EXT, N/A
• Fits 2002-2006 GMC Envoy XL, N/A
• Fits 2004-2005 GMC Envoy XUV, N/A
• Fits 2002-2004 Oldsmobile Bravada, N/A

What It Helps Address

• Overheating caused by a leaking or restricted radiator
• Transmission fluid temperature concerns tied to a failing cooler circuit
• Coolant loss from cracked tanks, worn seals, or damaged core tubes
• Poor heat transfer from an aging factory radiator
• Cooling system service needs on high-mileage Trailblazer, Envoy, and 9-7x vehicles

Installation Notes and Tips

Verify core dimensions, inlet and outlet sizes, and cooler line spacing before installation. Transfer any vehicle-specific fittings or related components as needed, and inspect hoses, clamps, and coolant condition during replacement. This radiator is built for drop-in fitment on listed applications, but final installation should follow the vehicle service procedure and cooling system bleed requirements.

Quality Assurance

OSC radiators are produced with factory-style engineering checks and are tested multiple times during manufacturing, including cooler testing before tank installation, core testing before assembly, and a final assembled-unit test. The design also incorporates enhancements aimed at addressing common original-equipment failure points in higher-mileage vehicles.