Gates 21990 Radiator Coolant Hose - Lower

Overview of Gates Molded Coolant Hose 21990

The Gates Molded Coolant Hose 21990 is designed specifically for select Buick and Oldsmobile models, including the Century, Cutlass Ciera, and Cutlass Cruiser. This radiator coolant hose is engineered to meet the cooling system requirements of these vehicles, ensuring reliable performance and durability.

• Constructed from durable EPDM material for heat and chemical resistance
• Molded design for precise fit and secure installation
• End 1 inside diameter: 1.27 inches (32 mm)
• End 2 inside diameter: 1.52 inches (39 mm)
• Centerline length: 20.8 inches (528 mm)
• Contains no internal spring, ensuring smooth coolant flow
• Compatible with Buick Century, Oldsmobile Cutlass Ciera, and Cutlass Cruiser

Detailed Product Description

The Gates Molded Coolant Hose 21990 is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and automotive fluids. This molded radiator coolant hose features two different inside diameters at each end—1.27 inches (32 mm) and 1.52 inches (39 mm)—to accommodate specific radiator and engine connections. With a centerline length of 20.8 inches (528 mm), it is designed to fit precisely within the cooling system layout of compatible Buick and Oldsmobile vehicles. The hose does not contain an internal spring, which helps maintain consistent coolant flow without obstruction. Its molded construction ensures a secure, leak-resistant fit that aligns with factory specifications.

About the Molded Coolant Hose Product Line

The Gates Molded Coolant Hose line focuses on delivering hoses that are pre-formed to exact OEM shapes and dimensions. This eliminates the need for bending or shaping during installation, reducing the risk of kinks or leaks. The molded design of the 21990 part number ensures compatibility with the cooling systems of Buick Century, Oldsmobile Cutlass Ciera, and Cutlass Cruiser models, providing a reliable replacement option that meets original equipment standards.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses
• Resolving coolant leaks caused by hose degradation
• Preventing overheating due to compromised coolant flow
• Addressing swelling or softening of old hoses
• Maintaining proper coolant system pressure and circulation

Installation Notes and Tips

• Ensure the engine is cool before removing the old hose to avoid burns
• Check hose connections and clamps for corrosion or damage and replace if necessary
• Verify the correct orientation of the molded hose before installation
• Use appropriate coolant compatible with Buick and Oldsmobile specifications
• Inspect the cooling system for other worn components during installation

Quality Assurance and Warranty

The Gates Molded Coolant Hose 21990 is manufactured to meet stringent quality standards, ensuring durability and performance in demanding automotive environments. Made from EPDM material, it offers resistance to heat, ozone, and automotive fluids. While specific warranty details are not provided, Gates products typically adhere to industry standards for reliability and fitment, supporting long-term service life in Buick Century, Oldsmobile Cutlass Ciera, and Cutlass Cruiser vehicles.