Gates 21991 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 21991

The Gates Molded Coolant Hose 21991 is designed for reliable cooling system performance in select Buick, 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, Grand Prix, Lumina, and Monte Carlo.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure installation
• Centerline length of 16.4 inches (417 mm) for accurate routing
• Inside diameter of 1.27 inches (32 mm) on both ends for consistent coolant flow
• Compatible with multiple GM makes and models including Buick Regal and Pontiac Trans Sport
• Does not contain a spring or quick connect fittings, ensuring a straightforward replacement

Detailed Product Description

This radiator coolant hose from Gates is part of the Molded Coolant Hose product line, which focuses on delivering hoses that are pre-formed to match the exact contours required by specific vehicle applications. The molded construction eliminates the need for bending or shaping during installation, reducing the risk of kinks or leaks. Made from EPDM, the hose resists degradation from heat, ozone, and automotive fluids, providing durability and longevity in the cooling system.

The hose features a centerline length of 16.4 inches (417 mm) and an inside diameter of 1.27 inches (32 mm) on both ends, ensuring proper coolant flow and fitment. It is designed without springs or quick connect fittings, making it suitable for direct replacement in compatible vehicles without additional hardware.

Compatible Vehicles and Applications

This Gates Molded Coolant Hose 21991 is compatible with a range of General Motors vehicles, including:

• Buick Cutlass and Regal
• Chevrolet Lumina, Monte Carlo, and Montana
• Oldsmobile Cutlass Supreme and Silhouette
• Pontiac Grand Prix, Trans Sport

It is intended for use as a radiator coolant hose, helping to maintain proper engine temperature by facilitating coolant circulation.

Common Issues Addressed by This Radiator Coolant Hose

• Replacement of cracked or leaking radiator hoses
• Resolving coolant flow restrictions due to hose deformation
• Preventing overheating caused by coolant leaks
• Eliminating hose failures from material degradation
• Ensuring proper fitment in GM vehicles requiring molded hose design

Installation Notes and Tips

• Verify hose dimensions and compatibility with your specific vehicle model before installation
• Ensure all clamps and connections are secure to prevent leaks
• Inspect surrounding components for wear or damage during replacement
• Drain coolant system properly before removing the old hose
• Use appropriate tools to avoid damaging the molded hose during installation

Quality Assurance and Warranty

Gates Molded Coolant Hose 21991 is manufactured to meet or exceed OEM specifications for durability and performance. The EPDM material and molded design contribute to long service life under normal operating conditions. While specific warranty details may vary, Gates typically offers coverage against defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.