Gates 21158 Radiator Coolant Hose - Upper

Overview of Gates Molded Coolant Hose 21158

The Gates Molded Coolant Hose 21158 is designed for reliable cooling system performance in select Buick, Chevrolet, Oldsmobile, Pontiac, and Volvo vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent coolant flow and heat resistance for models like the Cavalier, Citation, and Omega.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for precise fit and secure installation
• Centerline length of 27 inches (686 mm) for accurate routing
• Inside diameter of 1.25 inches (32 mm) on both ends for standard coolant flow
• Does not contain a spring or quick connect fittings, ensuring compatibility with original equipment

Detailed Product Description

The Gates Molded Coolant Hose 21158 is a radiator coolant hose specifically molded to fit a range of vehicles including Buick Skylark, Chevrolet Cavalier, Oldsmobile Firenza, Pontiac Phoenix, and Volvo S90. Made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, this hose maintains integrity under demanding engine conditions. The molded construction provides a precise shape that matches OEM specifications, reducing the risk of leaks and improving coolant system efficiency. Both ends feature an inside diameter of 1.25 inches (32 mm), suitable for standard radiator connections, and the hose measures 27 inches (686 mm) in centerline length, ensuring proper fitment without modification.

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on delivering hoses that are pre-formed to exact OEM shapes, eliminating the need for bending or shaping during installation. This product line emphasizes durability and fitment accuracy, which helps maintain the cooling system’s performance and reliability. The 21158 part number is part of this line, offering a molded solution for specific vehicle applications requiring precise coolant hose dimensions and material properties.

Common Applications and Issues Addressed

• Replacement of cracked or leaking radiator coolant hoses
• Resolving coolant flow restrictions caused by collapsed or deteriorated hoses
• Preventing overheating due to coolant leaks or hose failure
• Maintaining proper coolant circulation in Buick, Chevrolet, Oldsmobile, Pontiac, and Volvo models
• Ensuring compatibility with original radiator connections without additional fittings

Installation Notes and Tips

• Verify hose length and diameter match your vehicle’s specifications before installation
• Ensure all clamps and connections are secure to prevent leaks
• Inspect surrounding components for wear or damage during replacement
• Flush the cooling system if contamination or debris is present
• Use proper tools to avoid damaging the molded hose during installation

Quality Assurance and Warranty

Gates Molded Coolant Hose 21158 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded design contribute to long service life under typical operating conditions. While specific warranty details are not provided here, Gates products generally come with a limited warranty against defects in material and workmanship. Consult product documentation or authorized distributors for exact warranty terms.