Gates 21717 Radiator Coolant Hose - Lower

Gates 21717 Molded Coolant Hose

Gates 21717 is a molded radiator coolant hose built for lower cooling-system routing on a wide range of Chevrolet and GMC trucks, vans, and Suburban models. It uses EPDM construction and OEM-style molded shaping to match the application-specific path under the hood.

The Gates Molded Coolant Hose line is built for radiator, heater, bypass, and other coolant routing needs, giving technicians a direct replacement option for vehicles that require a formed hose rather than universal tubing.

Key Features

• EPDM rubber construction for coolant-system service
• Molded design for the correct lower-hose routing
• End 1 inside diameter: 1.5 in. (38 mm)
• End 2 inside diameter: 1.73 in. (44 mm)
• Centerline length: 22.5 in. (572 mm)
• No spring, no modular sections, and no quick-connect fittings
• Direct-fit style for select Chevrolet and GMC applications

Product Details

This radiator coolant hose is engineered for lower hose applications on 1988-2000 Chevrolet and GMC vehicles, including C/K trucks, Suburban models, Express vans, and Savana vans. Gates 21717 follows OEM-quality specifications so the hose shape and dimensions align with the original cooling-system layout. If you are replacing a worn lower radiator hose on a Chevrolet C2500, GMC K3500, or a Chevrolet Express 1500, this molded hose provides the correct formed profile for the job.

This part cross-references Dayco 71426 and Continental 61514 for the same application.

Common Repair Uses

• Coolant leaks from a cracked or softened lower radiator hose
• Overheating caused by hose collapse, swelling, or restricted flow
• Replacement of a deteriorated molded hose on Chevrolet and GMC cooling systems
• Restoring proper hose routing after a previous incorrect universal hose install
• Service work on lower radiator hose connections in truck and van cooling systems

Installation Notes

Verify hose routing, end diameters, and centerline length before installation. This application is listed as a lower hose and some fitments note cut-to-fit or optional-hose usage, so confirm the vehicle-specific routing against the original part before final assembly. Inspect adjoining clamps, necks, and coolant passages for wear or corrosion before refilling the system.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in the cooling system. The Gates Molded Coolant Hose line is offered as a broad replacement range for upper, lower, bypass, heater, and other coolant applications.

Compatible Vehicles

• Fits 1996-2000 Chevrolet C2500, lower
• Fits 1996-2000 Chevrolet C3500, lower
• Fits 1996-2000 Chevrolet K2500, lower
• Fits 1996-2000 Chevrolet K3500, lower
• Fits 1996-2000 GMC C2500, lower
• Fits 1996-2000 GMC C3500, lower
• Fits 1996-2000 GMC K2500, lower
• Fits 1996-2000 GMC K3500, lower
• Fits 1996-1999 Chevrolet C2500 Suburban, lower
• Fits 1996-1999 Chevrolet Express 1500, lower
• Fits 1996-1999 Chevrolet Express 2500, lower
• Fits 1996-1999 Chevrolet Express 3500, lower
• Fits 1996-1999 Chevrolet K2500 Suburban, lower
• Fits 1996-1999 GMC C2500 Suburban, lower
• Fits 1996-1999 GMC K2500 Suburban, lower
• Fits 1996-1999 GMC Savana 1500, lower
• Fits 1996-1999 GMC Savana 2500, lower
• Fits 1996-1999 GMC Savana 3500, lower
• Fits 1994-1995 Chevrolet C2500, lower
• Fits 1994-1995 Chevrolet C2500 Suburban, lower
• Fits 1994-1995 Chevrolet C3500, lower
• Fits 1994-1995 Chevrolet K2500, lower
• Fits 1994-1995 Chevrolet K2500 Suburban, lower
• Fits 1994-1995 Chevrolet K3500, lower
• Fits 1994-1995 GMC C2500, lower
• Fits 1994-1995 GMC C2500 Suburban, lower
• Fits 1994-1995 GMC C3500, lower
• Fits 1994-1995 GMC K2500, lower
• Fits 1994-1995 GMC K2500 Suburban, lower
• Fits 1994-1995 GMC K3500, lower
• Fits 1990-1993 Chevrolet C1500, lower
• Fits 1991-1993 Chevrolet C2500, lower
• Fits 1992-1993 Chevrolet C2500 Suburban, lower
• Fits 1993 Chevrolet C3500, lower
• Fits 1988-1990 Chevrolet C3500, lower
• Fits 1991-1993 Chevrolet K2500, lower
• Fits 1992-1993 Chevrolet K2500 Suburban, lower
• Fits 1992-1993 Chevrolet K3500, lower
• Fits 1988-1990 Chevrolet K3500, lower
• Fits 1991-1993 GMC C2500, lower
• Fits 1992-1993 GMC C2500 Suburban, lower
• Fits 1992-1993 GMC C3500, lower
• Fits 1988-1990 GMC C3500, lower
• Fits 1991-1993 GMC K2500, lower
• Fits 1992-1993 GMC K2500 Suburban, lower
• Fits 1992-1993 GMC K3500, lower
• Fits 1988-1990 GMC K3500, lower
• Fits 1991 Chevrolet C3500, lower
• Fits 1991 Chevrolet K3500, lower
• Fits 1991 GMC C3500, lower
• Fits 1991 GMC K3500, lower