Gates 21592 Radiator Coolant Hose - Lower - Pipe To Thermostat or Upper

Gates 21592 Molded Coolant Hose

Gates 21592 is a molded radiator coolant hose built to OEM-quality specifications for upper and lower cooling system applications. This EPDM hose is shaped for direct replacement use on select Nissan, INFINITI, Mitsubishi, Dodge, Chevrolet, Buick, and Oldsmobile applications, including lower hose routing from the pipe to the thermostat on several trucks and SUVs.

Key Features

• EPDM construction for coolant system durability
• Molded shape for factory-style routing and fit
• 1.25 in. inside diameter at both ends
• 14.4 in. centerline length
• No spring and no quick-connect fittings
• Direct replacement for upper and lower coolant hose applications

Product Details

The Gates Molded Coolant Hose line is built for radiator and HVAC coolant service across a wide range of vehicle applications. Part number 21592 is a molded hose with a 1.25-inch inside diameter on both ends and a 14.4-inch centerline length, making it suitable for routing that follows the original hose path. It is listed for lower pipe-to-thermostat use on 2005-2012 Nissan Armada, 2004-2010 INFINITI QX56, and 2004-2010 Nissan TITAN, and for upper hose applications on select older passenger vehicles. This part cross-references Dayco 71305 for the same application.

Vehicle Fitment

• Fits 2005-2012 Nissan Armada, lower - pipe to thermostat
• Fits 2004-2010 INFINITI QX56, lower - pipe to thermostat
• Fits 2004-2010 Nissan TITAN, lower - pipe to thermostat
• Fits 2004 Nissan Pathfinder Armada, lower - pipe to thermostat
• Fits 1992-1994 Mitsubishi Expo LRV, upper
• Fits 1992 Dodge Colt, upper
• Fits 1987-1991 Chevrolet Cavalier, upper
• Fits 1987-1989 Buick Skyhawk, upper
• Fits 1987-1988 Oldsmobile Firenza, upper

What It Helps Address

• Cracked or hardened coolant hose material
• Leaks at a molded hose section
• Incorrect hose routing after replacement
• Cooling system service on Nissan Armada, INFINITI QX56, and Nissan TITAN
• Upper hose replacement on select Mitsubishi, Dodge, Chevrolet, Buick, and Oldsmobile models

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length before installation. Match the molded shape to the original routing so the hose clears nearby components and maintains proper coolant flow. Inspect adjoining clamps, thermostat housing, pipe ends, and radiator necks for wear or corrosion before installing Gates 21592.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for radiator hose replacement service. The EPDM construction and molded profile support consistent fitment across the listed applications, including Nissan Armada, INFINITI QX56, and Nissan TITAN cooling system repairs.