Gates 21957 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 21957

The Gates Molded Coolant Hose 21957 is designed for reliable cooling system performance in select Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent coolant flow and heat resistance for models like the Cutlass Supreme, Grand Prix, and Lumina.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure installation
• Centerline length of 11.9 inches (302 mm) for accurate routing
• End 1 and End 2 inside diameters both 1.27 inches (32 mm) for consistent coolant flow
• Contains no internal spring, reducing potential failure points
• Compatible with Chevrolet Cutlass Supreme, Oldsmobile Cutlass Supreme, Pontiac Grand Prix, and Chevrolet Lumina

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-engineered radiator hoses that are molded to exact specifications. This approach ensures a secure fit and reliable coolant transfer without the need for additional modifications. The molded construction of part number 21957 provides consistent dimensions and durability, making it suitable for specific GM models requiring exact hose configurations.

Detailed Product Description

The Gates Molded Coolant Hose 21957 is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. Both ends of the hose have an inside diameter of 1.27 inches (32 mm), ensuring uniform coolant flow and compatibility with factory fittings. The hose measures 11.9 inches (302 mm) in centerline length, matching the original equipment specifications for a proper fit. This hose does not contain an internal spring, which simplifies the design and reduces potential points of failure. Its molded construction guarantees consistent shape and dimensions, facilitating straightforward installation and reliable operation in the cooling system.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Chevrolet Cutlass Supreme
• Resolving coolant leaks caused by deteriorated hoses in Pontiac Grand Prix
• Maintaining proper coolant flow in Oldsmobile Cutlass Supreme cooling systems
• Preventing overheating issues related to faulty radiator hoses in Chevrolet Lumina
• Ensuring secure hose connections without the need for additional clamps or fittings

Installation Notes and Tips

• Verify hose dimensions against the original part to ensure compatibility
• Inspect surrounding components for wear or damage during installation
• Use appropriate clamps to secure the hose ends if not already equipped
• Ensure coolant system is depressurized and cooled before removal and installation
• Check for leaks after installation by running the engine to operating temperature

Quality Assurance and Warranty

Gates Molded Coolant Hose 21957 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded design contribute to long service life under normal operating conditions. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Chevrolet, Oldsmobile, and Pontiac vehicles.