Dayco 71988 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 71988

The Dayco Curved Radiator Hose 71988 is designed specifically for Chevrolet and GMC trucks, including the Sierra 1500 and Silverado 1500 models. This branched radiator coolant hose is engineered to meet precise fitment requirements, ensuring reliable cooling system performance.

• Constructed from durable EPDM material for heat and chemical resistance
• Branched hose design with three different inside diameters for versatile coolant flow
• Protective sleeve included to enhance hose longevity
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Compatible with Chevrolet Sierra 1500 and GMC Silverado 1500

Detailed Product Features and Specifications

The Dayco Curved Radiator Hose 71988 is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. This hose features a branched design with three inside diameters: 1 1/2 inches, 1 25/32 inches, and 1 inch, allowing it to connect multiple points within the cooling system efficiently. The hose is black in color and includes a protective sleeve to guard against abrasion and premature wear. It does not contain a heat shield but complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring it meets industry requirements for radiator coolant hoses.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on providing hoses with specific bends and branches to accommodate complex cooling system layouts. This product line is designed to offer precise fitment and durability for vehicles requiring non-linear hose configurations. The 71988 part number is part of this line, delivering a branched hose solution tailored for Chevrolet and GMC full-size pickup trucks.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in Chevrolet Sierra 1500 and GMC Silverado 1500
• Addressing coolant leaks caused by hose degradation or damage
• Improving coolant flow efficiency with a branched hose design
• Preventing overheating issues related to faulty or incompatible hoses
• Maintaining proper engine temperature regulation through reliable hose connections

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 71988, ensure the vehicle is cool and the cooling system is depressurized. Verify the hose diameters match the radiator and engine fittings: 1 1/2 inches, 1 25/32 inches, and 1 inch at the respective ends. Use appropriate clamps and tighten securely to prevent leaks. Inspect the protective sleeve for proper positioning to avoid abrasion during operation. It is recommended to replace any related clamps or seals during installation for optimal performance.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71988 to meet SAE specifications, ensuring compliance with industry standards for durability and performance. The EPDM material and protective sleeve contribute to extended service life under normal operating conditions. Warranty details should be confirmed with the original equipment provider or distributor, as coverage may vary.