Dayco 71309 Radiator Coolant Hose - Lower or Upper

Overview of Dayco Curved Radiator Hose 71309

The Dayco Curved Radiator Hose 71309 is designed to provide reliable coolant flow for select Chevrolet, Mitsubishi, 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 material for heat and chemical resistance
• Black color with a single inside diameter of 1 1/4 inches on both ends
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height measures 22 1/2 inches for precise fitment
• Compatible with Chevrolet Alero, Camaro; Mitsubishi Sigma; Oldsmobile Classic; Pontiac Firebird, Grand Am

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on delivering hoses with precise bends and dimensions to match specific vehicle cooling system requirements. This product line emphasizes durability and compliance with SAE standards, ensuring that hoses like the 71309 maintain coolant flow integrity without the need for additional heat shields or protective sleeves.

Detailed Product Description

The Dayco 71309 radiator coolant hose is a single inside diameter hose measuring 1 1/4 inches at both ends, designed to fit a range of vehicles including Chevrolet Alero and Camaro, Mitsubishi Sigma, Oldsmobile Classic, and Pontiac Firebird and Grand Am models. Made from EPDM, the hose offers resistance to heat, ozone, and coolant chemicals, which helps maintain system reliability. The hose does not include a heat shield or protective sleeve, reflecting its suitability for applications where additional protection is not required. Its trunk height of 22 1/2 inches ensures proper routing and fit within the engine bay.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Chevrolet, Mitsubishi, Oldsmobile, and Pontiac vehicles
• Resolving coolant leaks caused by hose degradation or swelling
• Maintaining proper coolant flow to prevent engine overheating
• Addressing fitment issues with hoses that do not meet OEM specifications
• Upgrading to a hose compliant with SAE J20R4 Class D-1 and SAE J1684 Type EC standards

Installation Notes and Tips

• Ensure the engine is cool before removing the old radiator hose to avoid burns
• Check hose clamps and replace if corroded or damaged during installation
• Verify the hose routing matches OEM specifications to prevent kinks or interference
• Inspect adjoining components for wear or damage while replacing the hose
• Use appropriate coolant compatible with EPDM hoses to extend service life

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71309 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring material and dimensional quality. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by the brand's commitment to durability and performance.