Dayco 80245 HVAC Heater Hose - Heater Inlet or Reservoir To Radiator

Dayco 80245 HVAC Heater Hose Overview

Dayco 80245 is an HVAC heater hose assembly for the reservoir-to-radiator circuit on a wide range of GM trucks and SUVs. It is a direct-fit replacement for applications such as the Chevrolet Silverado 1500, Silverado 2500 HD, GMC Sierra 1500, and Tahoe.

Use this hose when servicing the reservoir to radiator connection on compatible Chevrolet, GMC, and Cadillac vehicles. The Dayco 80245 part number is commonly searched for GM cooling-system hose replacement needs.

Key Features

• HVAC heater hose for reservoir to radiator routing
• Fits 1999-2010 GM truck and SUV applications listed below
• Direct replacement format for service and repair work
• Dayco part number 80245
• Common fitment across Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, and Cadillac Escalade models

Compatible Vehicle Fitment

• Fits 2010 Chevrolet Silverado 2500 HD, Reservoir To Radiator
• Fits 2001-2006 Chevrolet Silverado 2500 HD, Reservoir To Radiator
• Fits 2007 Chevrolet Silverado 1500 Classic, Reservoir To Radiator
• Fits 2007 Chevrolet Silverado 1500 HD Classic, Reservoir To Radiator
• Fits 2007 Chevrolet Silverado 2500 HD Classic, Reservoir To Radiator
• Fits 2007 Chevrolet Silverado 3500 Classic, Reservoir To Radiator
• Fits 1999-2006 Chevrolet Silverado 1500, Reservoir To Radiator
• Fits 2005-2006 Chevrolet Silverado 1500 HD, Reservoir To Radiator
• Fits 2001-2003 Chevrolet Silverado 1500 HD, Reservoir To Radiator
• Fits 2001-2006 Chevrolet Silverado 3500, Reservoir To Radiator
• Fits 1999-2004 Chevrolet Silverado 2500, Reservoir To Radiator
• Fits 2002-2006 Chevrolet Avalanche 1500, Reservoir To Radiator
• Fits 2002-2006 Chevrolet Avalanche 2500, Reservoir To Radiator
• Fits 2002-2006 Chevrolet Suburban 1500, Reservoir To Radiator
• Fits 2001-2006 Chevrolet Suburban 2500, Reservoir To Radiator
• Fits 2000-2006 Chevrolet Tahoe, Reservoir To Radiator
• Fits 2007 Chevrolet Silverado 1500 Classic, Reservoir To Radiator
• Fits 2002-2006 Cadillac Escalade, Reservoir To Radiator
• Fits 2003-2006 Cadillac Escalade ESV, Reservoir To Radiator
• Fits 2002-2006 Cadillac Escalade EXT, Reservoir To Radiator
• Fits 2007 GMC Sierra 1500 Classic, Reservoir To Radiator
• Fits 2007 GMC Sierra 1500 HD Classic, Reservoir To Radiator
• Fits 2007 GMC Sierra 2500 HD Classic, Reservoir To Radiator
• Fits 2007 GMC Sierra 3500 Classic, Reservoir To Radiator
• Fits 1999-2006 GMC Sierra 1500, Reservoir To Radiator
• Fits 2005-2006 GMC Sierra 1500 HD, Reservoir To Radiator
• Fits 2001-2003 GMC Sierra 1500 HD, Reservoir To Radiator
• Fits 2001-2006 GMC Sierra 2500 HD, Reservoir To Radiator
• Fits 2001-2006 GMC Sierra 3500, Reservoir To Radiator
• Fits 2001-2006 GMC Yukon, Reservoir To Radiator
• Fits 2001-2006 GMC Yukon XL 1500, Reservoir To Radiator
• Fits 2001-2006 GMC Yukon XL 2500, Reservoir To Radiator
• Fits 2001-2004 GMC Sierra 2500, Reservoir To Radiator

Common Repair Uses

• Cracked or aged reservoir-to-radiator hose replacement
• Coolant seepage at the hose connection
• Soft, swollen, or heat-damaged hose service
• Restoring proper coolant routing in GM cooling systems
• Repairing a leaking hose on Silverado, Sierra, Tahoe, Yukon, or Escalade models

Installation Notes

Verify the reservoir-to-radiator routing before installation and compare the removed hose to Dayco 80245 for length, bends, and end connections. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

For best results, inspect adjacent clamps, fittings, and radiator necks during service. Confirm vehicle year, make, model, and cooling-system layout before ordering.

Quality Assurance

Dayco is a recognized aftermarket brand for engine and thermal-management hose applications. Part number 80245 is cataloged for the listed GM fitments and should be matched to the vehicle’s reservoir-to-radiator hose route before installation.