Koyorad A2370-1 Radiator

Koyorad A2370-1 Radiator Overview

The Koyorad A2370-1 radiator is an OE-equivalent replacement built for full-size GM trucks and SUVs that need dependable cooling performance. It combines an aluminum core with plastic tanks and includes both engine oil cooler and transmission oil cooler provisions for direct replacement service.

Fits 1999-2014 Cadillac Escalade, Chevrolet Silverado, GMC Sierra, Suburban, Yukon, and Hummer H2 applications listed below.

Key Features

• Aluminum core construction with plastic tanks
• Single-row core design for OE-style fitment
• Core dimensions: 34 in. height, 18.4375 in. width, 1.3125 in. thickness
• Inlet diameter: 1.3125 in.; outlet diameter: 1.5625 in.
• Internal engine oil cooler included
• Internal transmission oil cooler included
• Engine oil cooler: 1.75 in. diameter, 6-plate plate-style cooler
• Transmission oil cooler diameter: 1.625 in.
• Koyorad Radiator line replacement for direct-fit cooling service

Detailed Description

Koyorad A2370-1 is a radiator replacement for a wide range of GM full-size platforms, including Cadillac Escalade, Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, GMC Yukon XL, and Hummer H2 models. As part of the Koyorad Radiator line, it reflects the brand’s OE-equivalent approach to replacement cooling components, using application-specific construction to match factory-style fitment and cooling circuit requirements. The radiator includes internal engine oil cooling and internal transmission oil cooling, making it a practical choice for vehicles equipped with integrated fluid cooling systems. This part number, A2370-1, is built for drivers replacing a leaking, clogged, or damaged radiator on trucks and SUVs that rely on stable coolant and transmission temperature control.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Vehicle Fitment

• Fits 2002-2014 Cadillac Escalade, N/A
• Fits 2003-2014 Cadillac Escalade ESV, N/A
• Fits 2007-2013 Cadillac Escalade EXT, N/A
• Fits 2006-2013 Chevrolet Suburban 1500, N/A
• Fits 2000-2013 Chevrolet Suburban 2500, N/A
• Fits 2000-2013 GMC Yukon XL 2500, N/A
• Fits 2003-2009 Chevrolet Silverado 1500, N/A
• Fits 2001-2009 Chevrolet Silverado 2500 HD, N/A
• Fits 2008-2009 Chevrolet Silverado 3500, N/A
• Fits 2001-2006 Chevrolet Silverado 3500, N/A
• Fits 2007-2009 Chevrolet Silverado 3500 HD, N/A
• Fits 2001-2009 GMC Yukon XL 1500, N/A
• Fits 2008 Chevrolet Avalanche, N/A
• Fits 2007-2008 GMC Yukon, N/A
• Fits 2007 Chevrolet Silverado 1500 Classic, N/A
• Fits 2007 Chevrolet Silverado 1500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 2500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 3500 Classic, N/A
• Fits 2003-2007 Hummer H2, N/A
• Fits 2002-2006 Cadillac Escalade EXT, N/A
• Fits 2005-2006 Chevrolet Silverado 1500 HD, N/A
• Fits 2001-2003 Chevrolet Silverado 1500 HD, N/A
• Fits 1999-2006 Chevrolet Silverado 2500, N/A
• Fits 2001-2006 GMC Sierra 1500, N/A
• Fits 2005-2006 GMC Sierra 1500 HD, N/A
• Fits 2001-2003 GMC Sierra 1500 HD, N/A
• Fits 2001-2006 GMC Sierra 2500 HD, N/A
• Fits 2001-2006 GMC Sierra 3500, N/A
• Fits 2002-2004 Chevrolet Avalanche 1500, N/A
• Fits 1999-2004 GMC Sierra 2500, N/A

Installation Notes and Tips

Verify inlet and outlet sizing, cooler connections, and mounting points against the original radiator before installation. Flush the cooling system, inspect hoses and clamps, and confirm the engine oil cooler and transmission cooler lines are clean and properly seated during replacement. For vehicles with integrated cooling circuits, check for contamination in the transmission cooler passages before putting the vehicle back into service.

Quality Assurance

Koyorad states that its radiators are built as OE-equivalent replacements using the company’s manufacturing experience and technical know-how to deliver a correct replacement the first time.