Gates 23770 Radiator Coolant Hose - Lower

Gates 23770 Molded Coolant Hose Overview

The Gates 23770 molded coolant hose is a lower radiator coolant hose built for specific OE-style applications. It uses EPDM, plastic, and steel construction with a molded shape and one female quick connector for a direct-fit cooling system connection.

Compatible With 2011-2014 Chevrolet Silverado 2500 HD and Silverado 3500 HD, 2011-2014 GMC Sierra 2500 HD and Sierra 3500 HD, plus 2011-2013 Chevrolet Silverado 3500 and 2011 GMC Sierra 1500, lower position.

Key Features

• Gates Molded Coolant Hose line for application-specific cooling system replacement
• Part number 23770
• Lower radiator coolant hose configuration
• EPDM, plastic, and steel construction
• Molded design for OE-style routing and fit
• One female quick connector integrated into the hose assembly
• 38 mm (1.5 in.) inside diameter at both ends
• 478 mm (18.8 in.) centerline length

Product Details

Gates molded coolant hose assemblies are built for vehicles that use integrated hose components rather than a simple straight hose. This design helps match the original routing and connection style used in the cooling system, including the quick-connect fitting called out for this application. The 23770 hose is listed for lower-position use on Chevrolet Silverado and GMC Sierra heavy-duty trucks, including Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, Sierra 3500 HD, Silverado 3500, and Sierra 1500 applications.

This part cross-references Dayco 72555 for the same application.

Common Cooling System Issues

• Cracked or deteriorated lower radiator hose material
• Coolant leaks at the hose connection point
• Improper hose routing from a previous replacement
• Damaged or worn quick-connect interface
• Cooling system service on Chevrolet Silverado and GMC Sierra trucks

Installation Notes and Tips

Verify the vehicle year, make, model, and lower hose position before ordering. Confirm the female quick connector style and the 38 mm end diameters match the original hose assembly. Inspect adjoining cooling system components for wear, contamination, or damage before installation so the replacement hose seals correctly.

Quality Assurance

Gates is a recognized aftermarket supplier of modular coolant hose assemblies, and this molded hose is manufactured to follow application-specific OE-style requirements for the listed Chevrolet Silverado and GMC Sierra fitments.