Gates 21187 Radiator Coolant Hose

Reliable Radiator Coolant Hose for Audi and Volkswagen Vehicles

The Gates Molded Coolant Hose 21187 is designed to provide dependable cooling system performance for select Audi and Volkswagen models. Engineered with durable EPDM material, this radiator coolant hose ensures consistent heat resistance and flexibility for optimal engine temperature regulation.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure connections
• Centerline length of 11 inches (279 mm) for accurate replacement
• Inside diameter of 0.94 inches (24 mm) on both ends for consistent coolant flow
• Compatible with Audi 4000 and Volkswagen Jetta, Quantum, Rabbit Convertible, and Rabbit Pickup models

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on delivering hoses that are pre-formed to match specific vehicle cooling system configurations. This eliminates the need for bending or shaping during installation, reducing the risk of leaks or hose damage. The molded construction of part number 21187 ensures a precise fit for the intended Audi and Volkswagen applications, maintaining system integrity and performance.

Product Details and Specifications

This radiator coolant hose features a molded design with no springs or quick connect fittings, providing a straightforward replacement part. Both ends have an inside diameter of 0.94 inches (24 mm), suitable for the cooling system connections on the specified vehicles. The hose length measures 11 inches (279 mm) centerline, matching OEM dimensions for proper coolant flow and system compatibility. The EPDM material offers resistance to heat, ozone, and coolant chemicals, supporting long-term durability in demanding engine environments.

Common Applications and Problem Resolution

• Replacement of cracked or leaking radiator coolant hoses in Audi 4000 and Volkswagen Jetta models
• Addressing coolant leaks caused by hose deterioration in Volkswagen Quantum and Rabbit series vehicles
• Restoring proper coolant circulation to prevent engine overheating
• Eliminating hose collapse or deformation that restricts coolant flow
• Maintaining cooling system pressure and preventing coolant loss

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to avoid burns. Verify that the hose ends and clamps are clean and free of debris before installation. The molded design of the Gates 21187 hose allows for direct replacement without modification. Use appropriate hose clamps to secure connections and check for leaks after installation. Proper alignment of the hose will help maintain system integrity and prevent premature wear.

Quality Assurance and Warranty

Gates Molded Coolant Hose 21187 is manufactured to meet or exceed OEM specifications for fit, form, and function. The EPDM material and molded construction provide reliable performance under typical operating conditions. While specific warranty details are not provided, Gates products are generally backed by quality standards consistent with automotive industry requirements.