Gates 21740 Radiator Coolant Hose

Gates 21740 Molded Coolant Hose

The Gates 21740 molded coolant hose is built for radiator and heater circuit service where a formed hose is needed to match the vehicle’s routing. Made from EPDM, it provides an OEM-style replacement for coolant transfer points on select Ford, Mercury, Buick, Chevrolet, GMC, Saturn, Geo, and Toyota applications.

Gates’ Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant paths with OE-level fitment specifications. That makes it a practical choice when replacing a worn heater inlet hose, heater-to-tee hose, or thermostat pipe hose on vehicles such as the Chevrolet Traverse, GMC Acadia, and Ford Taurus.

Key Features

• EPDM construction for coolant system service
• Molded shape for routing that follows the original hose path
• End inside diameters: 16 mm (.62 in) and 19 mm (.75 in)
• Centerline length: 147 mm (5.8 in)
• No spring, no modular sections, and no quick-connect fittings
• Direct replacement style for radiator and heater hose applications

Application Details

Compatible with select 1986-2017 vehicles, including Fits 2008-2017 Buick Enclave, Heater To Tee-2; Fits 2015-2017 Chevrolet Traverse, Heater Inlet; Fits 2015-2016 GMC Acadia, Heater Inlet; Fits 2009-2014 Chevrolet Traverse, Heater To Tee-2; Fits 2007-2014 GMC Acadia, Heater To Tee-2; Fits 2007-2010 Saturn Outlook, Heater To Tee-2; Fits 1993-1997 Geo Prizm, Heater To Valve; Fits 1993-1997 Toyota Corolla, Heater To Valve; Fits 1986-1995 Ford Taurus, Pipe-1 To Thermostat; Fits 1995 Ford Taurus, Engine To Pipe-2; and Fits 1986-1995 Mercury Sable, Pipe-1 To Thermostat. This part cross-references Dayco 71433 and Continental 63041 for the same application. Part number 21740 is also listed for multiple OE-style interchange references.

Common Problems It Can Address

• Cracked or hardened coolant hose material
• Coolant seepage at a formed hose section
• Incorrect hose routing after a previous repair
• Restricted heater circuit flow from a deteriorated hose
• Replacement needs for radiator and HVAC coolant hose routing

Installation Notes

Verify the hose path, end diameters, and centerline length before installation. Match the molded shape to the original routing and inspect adjoining clamps, tees, and pipe connections for wear or corrosion before reassembly. For vehicles with heater circuit routing such as the Buick Enclave, Chevrolet Traverse, and GMC Acadia, confirm the position listed in the fitment data before ordering.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for direct-fit cooling system service. The Gates molded coolant hose line is engineered to cover a broad range of replacement applications, helping reduce the need to source a dealer-only hose for routine radiator and heater hose replacement.