Gates 21766 Radiator Coolant Hose - Lower

Reliable Radiator Coolant Hose for Efficient Cooling

The Gates Molded Coolant Hose 21766 is engineered to provide durable and precise coolant flow management in automotive cooling systems. Designed with high-quality EPDM material and molded construction, this radiator coolant hose ensures a secure fit and long-lasting performance for various vehicle applications.

• Constructed from durable EPDM material for heat and chemical resistance
• Molded design for exact fit and reliable sealing
• End 1 inside diameter: 2.5 inches (64 mm)
• End 2 inside diameter: 2.86 inches (73 mm)
• Centerline length of 12.3 inches (312 mm) for accurate routing
• Contains internal spring to prevent collapse under pressure
• Zero branch quantity and no quick connect fittings for straightforward installation

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-engineered hoses that are molded to exact specifications, ensuring consistent fitment and performance. This product line is designed to meet the demands of modern cooling systems by providing hoses that resist heat, pressure, and chemical exposure, making them suitable for a wide range of automotive makes and models requiring reliable radiator coolant hoses.

Detailed Product Description

The Gates 21766 radiator coolant hose is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. The molded construction guarantees a precise shape that matches OEM specifications, reducing the risk of leaks and hose failure. With an internal spring, this hose maintains its shape and prevents collapse during engine operation, ensuring consistent coolant flow. The hose features two different inside diameters—2.5 inches (64 mm) on one end and 2.86 inches (73 mm) on the other—allowing it to connect components with varying sizes. Its 12.3-inch (312 mm) centerline length supports proper routing within the engine bay without kinking or stretching.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in vehicles
• Prevention of coolant leaks caused by hose degradation
• Maintaining proper coolant flow to avoid engine overheating
• Addressing hose collapse under vacuum or pressure conditions
• Ensuring compatibility with specific vehicle cooling system configurations

Installation Notes and Tips

When installing the Gates Molded Coolant Hose 21766, ensure the hose is routed without sharp bends or kinks to maintain coolant flow. Verify that the hose ends match the corresponding radiator and engine fittings by checking the inside diameters of 2.5 inches (64 mm) and 2.86 inches (73 mm). The molded design simplifies alignment, but it is important to inspect clamps and connections for tightness to prevent leaks. The internal spring helps maintain hose shape, but avoid excessive twisting during installation.

Quality Assurance and Warranty

Gates is a recognized manufacturer of automotive cooling components, and the Molded Coolant Hose 21766 is produced to meet stringent quality standards. The EPDM material and molded construction contribute to durability and resistance to common coolant system stresses. While specific warranty details are not provided, Gates products typically come with manufacturer-backed quality assurance to support reliable performance in compatible vehicles.