Gates 23227 Radiator Coolant Hose - Upper

Gates 23227 Molded Coolant Hose Overview

Gates 23227 is a molded radiator coolant hose built for upper coolant routing on select Chevrolet Silverado HD and GMC Sierra HD trucks. It uses EPDM construction and OEM-style molded shaping to match the factory hose path and connection points.

The Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant applications with OE-style specifications. For radiator hose replacement on the 2006-2008 Chevrolet Silverado 2500 HD or 2006-2008 GMC Sierra 2500 HD, this part number provides a direct-fit service option.

Key Features

• Brand: Gates Molded Coolant Hose
• Part number: 23227
• EPDM rubber construction for coolant-system service
• Molded hose design for factory-style routing
• End inside diameter: 1.78 in. (45 mm) at both ends
• Centerline length: 20.3 in. (516 mm)
• No spring and no quick-connect fittings
• Upper radiator coolant hose application

Detailed Description

Gates 23227 is a molded upper radiator coolant hose engineered for vehicles that use a formed hose shape to maintain proper routing and clearance in the engine bay. The EPDM material is suited for coolant exposure and everyday thermal cycling, while the molded profile helps match the original hose layout. This part is a practical replacement for the upper hose on 2006-2008 Chevrolet Silverado 2500 HD, 2007-2008 Chevrolet Silverado 3500 HD, 2006-2008 GMC Sierra 2500 HD, and 2007-2008 GMC Sierra 3500 HD applications, along with the listed Classic and 3500 variants.

This part cross-references Dayco 72347 for the same application. Gates 23227 is also referenced by interchange numbers including 24589L and E72347.

What This Hose Helps Address

• Cracked or hardened upper radiator hose material
• Coolant leaks at the hose body or connection ends
• Incorrect hose routing from a damaged molded hose
• Softening, swelling, or collapse from age and heat
• Cooling-system service on Silverado HD and Sierra HD trucks

Installation Notes and Tips

Confirm the vehicle year, engine configuration, and upper-hose routing before installation. Compare the original hose shape, end diameters, and centerline length to the replacement part to verify match-up. Inspect hose clamps, necks, and adjacent cooling-system components for wear before reassembly, and refill and bleed the cooling system according to factory service procedures.

Quality Assurance

Gates manufactures molded coolant hoses to OEM-quality specifications for replacement use. The 23227 part is built to support factory-style fitment and coolant-system service on the listed Chevrolet and GMC HD truck applications.