Dayco 70056 Radiator Coolant Hose - Lower

Radiator Coolant Hose Overview

Dayco radiator coolant hose 70056 is a lower hose application for select Chevrolet and GMC trucks and vans. It is built for direct replacement use in cooling system service on heavy-duty and commercial platforms.

Key Features

• Direct replacement radiator coolant hose for cooling system repair.
• Lower hose application for select Chevrolet Silverado 2500 HD and Silverado 3500 HD models.
• Fits Chevrolet Express 2500 and Express 3500, lower.
• Fits GMC Savana 2500 and Savana 3500, lower.
• Fits GMC Sierra 2500 HD and Sierra 3500 HD, lower.
• Dayco part number 70056 for catalog and service reference.

Detailed Description

Dayco 70056 is a radiator coolant hose intended for lower hose service on 2015-2016 Chevrolet and GMC applications. Coverage includes Chevrolet Express 2500, Express 3500, Silverado 2500 HD, Silverado 3500 HD, GMC Savana 2500, Savana 3500, Sierra 2500 HD, and Sierra 3500 HD. For buyers searching for a lower radiator hose for Chevrolet Silverado 2500 HD or a coolant hose for GMC Sierra 3500 HD, this part number provides a fitment-specific replacement option.

Use this hose when replacing a worn, cracked, or leaking lower coolant line in the radiator circuit. The part number 70056 is also useful when cross-checking service records or matching an existing hose during cooling system maintenance on Chevrolet Express and GMC Savana platforms.

What It Is Used For

• Replacing a leaking lower radiator hose.
• Restoring coolant flow in the engine cooling circuit.
• Addressing hose cracking, swelling, or soft spots.
• Correcting coolant loss from a damaged hose connection.
• Supporting routine cooling system repair on heavy-duty trucks and vans.

Installation Notes and Tips

Verify the vehicle year, make, model, and lower hose position before installation. Compare the removed hose to Dayco 70056 for routing, length, and end configuration before final fitment. Inspect adjacent clamps, radiator necks, and coolant condition during service to help prevent repeat leaks.

Quality Assurance

Dayco is a recognized name in belts and cooling components, and part number 70056 is cataloged for specific vehicle applications to support accurate replacement selection.