Gates 21719 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 21719

The Gates Molded Coolant Hose 21719 is designed for reliable cooling system performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. This radiator coolant hose is engineered to meet specific fitment requirements for models such as the Cutlass, Cutlass Supreme, Grand Prix, Lumina, and Regal.

• Constructed from durable EPDM material for heat and chemical resistance
• Molded design ensures precise fit and secure connections
• End 1 inside diameter: 1.25 inches (32 mm)
• End 2 inside diameter: 1.57 inches (40 mm)
• Centerline length: 14.8 inches (376 mm)
• Contains no internal spring, providing consistent coolant flow
• Compatible with multiple GM makes and models

About the Molded Coolant Hose Product Line

The Gates Molded Coolant Hose line focuses on delivering hoses that are pre-formed to exact OEM specifications. This eliminates the need for bending or shaping during installation, reducing the risk of leaks or improper fit. The molded construction of part number 21719 ensures a secure and reliable connection within the cooling system of compatible Buick, Chevrolet, Oldsmobile, and Pontiac vehicles.

Detailed Product Description

This radiator coolant hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. The molded design of the Gates 21719 hose provides a precise fit with two different inside diameters at each end—1.25 inches (32 mm) and 1.57 inches (40 mm)—to match the specific radiator and engine connections. With a centerline length of 14.8 inches (376 mm), this hose is engineered to maintain proper coolant flow without kinks or restrictions. The absence of an internal spring allows for smooth coolant circulation, reducing the risk of hose collapse under vacuum conditions.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in Buick Cutlass and Cutlass Supreme
• Addressing coolant leaks in Chevrolet Lumina and Pontiac Grand Prix cooling systems
• Restoring proper coolant flow in Oldsmobile Regal engines
• Preventing overheating caused by deteriorated or misshapen hoses
• Ensuring secure hose connections without the need for additional fittings

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Ensure all clamps and fittings are clean and free of debris
• Lubricate hose ends with coolant or water to ease installation
• Inspect surrounding components for wear or damage during replacement
• Properly torque clamps to manufacturer specifications to avoid leaks

Quality Assurance and Warranty

Gates Molded Coolant Hose 21719 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction provide resistance to heat, pressure, and chemical exposure typical in automotive cooling systems. While specific warranty details may vary, Gates products generally come with a limited warranty against defects in material and workmanship, ensuring confidence in your replacement part.