Dayco 71586 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 71586

The Dayco Curved Radiator Hose 71586 is designed to provide reliable coolant flow for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance in demanding engine environments.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black single inside diameter hose with 1 1/4 inch ends
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 12 inches for precise fitment
• Compatible with Buick Cutlass Supreme, Chevrolet Lumina, Oldsmobile Regal, and Pontiac Grand Prix

Detailed Product Description

The Dayco Curved Radiator Hose line focuses on delivering hoses that maintain coolant system integrity under typical operating conditions. The 71586 part number features a curved design that facilitates proper routing within the engine bay, reducing stress and potential kinks. Made from EPDM, this hose resists heat, ozone, and coolant chemicals, which helps extend service life. Both ends have an inside diameter of 1 1/4 inches, making it a single i.d. hose suitable for specific radiator connections. This hose does not include a heat shield or protective sleeve, aligning with its intended application in standard cooling systems.

Compatible Vehicles and Applications

This radiator coolant hose is compatible with several GM models, including:

• Buick Cutlass Supreme
• Chevrolet Lumina
• Oldsmobile Regal
• Pontiac Grand Prix

It is designed to replace worn or damaged radiator hoses in these vehicles, ensuring proper coolant flow and engine temperature regulation.

Common Issues Addressed by Dayco Radiator Hose 71586

• Coolant leaks caused by cracked or brittle hoses
• Overheating due to restricted coolant flow
• Swelling or softening of old hoses under heat stress
• Hose collapse or kinking affecting coolant circulation
• Corrosion or chemical degradation from coolant exposure

Installation Notes and Tips

• Ensure engine is cool before removing the old hose
• Inspect hose clamps and replace if corroded or damaged
• Verify the hose routing matches the original to avoid kinks
• Check for proper seating on radiator and engine fittings
• After installation, pressure test the cooling system for leaks

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71586 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. While specific warranty details are not provided, Dayco products typically adhere to strict quality control processes to maintain durability and performance in automotive cooling systems.