Reach Cooling 41-2563 Radiator

Radiator for GM SUV Cooling Service

Restore cooling performance with the Reach Cooling Radiator 41-2563, an OE-style replacement built for select Chevrolet, GMC, Buick, Saab, and Isuzu applications. This radiator uses an aluminum core with plastic tanks and integrated transmission oil cooler connections for direct-fit service on supported vehicles.

Compatible With 2003-2009 Chevrolet Trailblazer, 2003-2006 Chevrolet Trailblazer EXT, 2004-2006 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2005-2009 GMC Envoy, 2004-2007 Buick Rainier, 2003-2006 Isuzu Ascender, 2005-2009 Saab 9-7x, and 2004-2006 Chevrolet SSR applications. Reach Cooling focuses on OE-quality radiators, condensers, and charge air coolers for automotive and heavy-duty use, with global aftermarket coverage.

Key Features

• Part number 41-2563 radiator for select GM-platform SUVs and related vehicles
• Aluminum core with plastic tank construction
• Single-row core design
• Core dimensions: 26 11/16 in. wide, 18 1/8 in. high, 1 in. thick
• Top right inlet and bottom right outlet layout
• 1 5/16 in. inlet diameter and 1 9/16 in. outlet diameter
• Plated transmission oil cooler with 11 1/2 in. fitting spacing

Detailed Description

The Reach Cooling 41-2563 radiator is engineered around the listed core size and hose locations for a direct replacement on supported Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Saab 9-7x, Isuzu Ascender, and Chevrolet SSR models. Its aluminum core helps transfer heat efficiently, while the plastic tanks match common OE-style radiator construction used in these applications. The integrated plated transmission oil cooler supports automatic-transmission cooling where equipped, and the inlet and outlet header dimensions help maintain proper fitment in the engine bay.

This part cross-references Spectra Premium CU2563 and DENSO Auto Parts 221-9116 for the same application. Use the part number 41-2563 when verifying fitment against your existing radiator and cooling system layout.

What It Helps Address

• Overheating caused by a leaking or restricted radiator
• Coolant loss from cracked tanks or aged core seams
• Transmission temperature concerns tied to radiator cooler failure
• Poor heat rejection in high-mileage cooling systems
• Fitment issues when replacing a damaged OE-style radiator

Installation Notes and Tips

Verify the inlet and outlet locations, core dimensions, and transmission cooler connection spacing before installation. Some listed applications note that a radiator cap is required, so confirm cap compatibility during service. Compare the existing radiator to part number 41-2563 to confirm hose routing, cooler fittings, and overall size before final assembly.

Quality Assurance

Reach Cooling manufactures aftermarket cooling components for automotive, heavy truck, and industrial applications, with OE-quality radiator production for U.S. and international markets. The brand’s product line is supported by global distribution and manufacturing resources focused on radiator, condenser, and charge air cooler applications.