Gates 21431 Radiator Coolant Hose - Lower - Pipe To Radiator or Upper - Engine To Pipe

Gates 21431 Molded Coolant Hose Overview

Gates 21431 is a molded radiator coolant hose built to OEM-quality specifications for select Nissan 300ZX and Toyota Land Cruiser applications. Its EPDM construction and formed shape support proper coolant routing in upper and lower hose locations where a direct-fit replacement matters.

The Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant paths with application-specific shapes. For buyers searching for a radiator coolant hose for a 1984-1989 Nissan 300ZX or a lower coolant hose for a 1988-1992 Toyota Land Cruiser, this part number provides a direct replacement option.

Key Features

• Brand: Gates Molded Coolant Hose
• Part number: 21431
• EPDM rubber construction for coolant service
• Molded design for proper hose routing and fit
• 1.56 in. inside diameter at both ends
• 12.5 in. centerline length
• No spring and no quick-connect fittings
• Direct replacement for upper and lower coolant hose locations listed below

Detailed Description

Gates 21431 is a molded radiator coolant hose engineered for vehicles that require a shaped hose rather than a straight universal section. The EPDM material is selected for cooling-system use, and the molded profile helps maintain the intended routing between the engine, pipe, radiator, or HVAC-related coolant path. This part number is listed for 1984-1989 Nissan 300ZX upper engine-to-pipe and lower pipe-to-radiator positions, as well as 1988-1992 Toyota Land Cruiser lower pipe-to-radiator service. If you are replacing a worn Nissan 300ZX coolant hose or sourcing a Toyota Land Cruiser radiator hose replacement, Gates 21431 is the application-specific option to match the original layout.

This part cross-references Dayco 71226 for the same application.

What It Helps Address

• Cracked or hardened radiator hose material
• Coolant leaks at a molded hose section
• Incorrect hose routing after a previous repair
• Heat-related hose deformation in the cooling system
• Replacement needs for Nissan 300ZX and Toyota Land Cruiser coolant lines

Installation Notes and Tips

Verify the hose position before ordering, since Gates 21431 is listed for specific upper and lower locations. Compare the molded shape, end inside diameters, and centerline length to the original hose before installation. Inspect adjoining pipes, clamps, and sealing surfaces for wear or corrosion so the new hose seats correctly in the cooling system.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for radiator, heater, bypass, and related coolant applications. The Gates molded coolant hose line is built as a broad replacement offering for vehicles that require formed cooling-system hoses.