Dayco 71670 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 71670

The Dayco Curved Radiator Hose 71670 is designed specifically for Nissan 300ZX models, providing reliable coolant flow and engine temperature regulation. Constructed from durable EPDM material, this dual inside diameter hose ensures a precise fit and long-lasting performance.

• Made from high-quality EPDM material for heat and chemical resistance
• Dual inside diameter hose with 1 5/16 inch and 1 9/16 inch ends
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color for standard OEM appearance
• Trunk height of 9 inches for proper routing in engine bay
• Compatible with Nissan 300ZX radiator coolant systems

Detailed Product Description

The Dayco Curved Radiator Hose 71670 is engineered to meet the cooling system demands of the Nissan 300ZX. Its EPDM construction offers resistance to heat, ozone, and coolant chemicals, which helps maintain hose integrity under typical engine operating conditions. The hose features a dual inside diameter design, with one end measuring 1 5/16 inches and the other 1 9/16 inches, allowing for a secure and leak-free connection between radiator components. This hose does not include a heat shield or protective sleeve, focusing on a straightforward, durable design. The 9-inch trunk height ensures proper fitment and routing within the engine compartment.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line is tailored to provide precise fit and reliable coolant flow for specific vehicle applications. This product line emphasizes quality materials and adherence to SAE specifications, such as SAE J20R4 Class D-1 and SAE J1684 Type EC, ensuring compatibility and performance. The curved design facilitates optimal routing in tight engine bays, reducing stress on connections and improving overall cooling system efficiency.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses on Nissan 300ZX
• Resolving coolant leaks caused by hose degradation or improper fit
• Preventing overheating issues due to compromised coolant flow
• Maintaining OEM coolant system integrity with correct hose dimensions
• Addressing hose swelling or softening from heat exposure

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose to avoid burns. Verify the hose ends match the radiator and engine inlet diameters (1 5/16 inch and 1 9/16 inch respectively). Use appropriate clamps to secure the hose and check for leaks after installation. Avoid twisting or stretching the hose during installation to maintain its structural integrity.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 71670 to meet strict SAE standards, ensuring durability and performance. While specific warranty details are not provided, Dayco products typically come with manufacturer-backed quality assurance to support reliable operation in Nissan 300ZX cooling systems.