Dayco 70764 Radiator Coolant Hose - Lower or Upper

Overview of Dayco Curved Radiator Hose 70764

The Dayco Curved Radiator Hose 70764 is designed for reliable coolant flow in select Lexus and Mercedes-Benz vehicles. Engineered with durable EPDM material, this radiator coolant hose ensures consistent performance for models like the Lexus LS400 and Mercedes-Benz 300SD.

• Constructed from high-quality EPDM for heat and chemical resistance
• Black single inside diameter hose with 1 1/2 inch ends
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards
• Trunk height measures 15 1/2 inches for precise fitment
• Compatible with Lexus LS400 and Mercedes-Benz 300SD, 300SE, S320 models

Details on the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on delivering hoses shaped to fit specific radiator and engine configurations. This product line emphasizes durability and exact fit, reducing the risk of leaks and coolant loss. The 70764 part benefits from this design approach, providing a curved hose that matches the coolant routing requirements of the listed Lexus and Mercedes-Benz vehicles.

Technical Description and Specifications

This radiator coolant hose features a single inside diameter of 1 1/2 inches on both ends, ensuring a uniform connection to the cooling system components. Made from EPDM, the hose resists heat, ozone, and coolant chemicals, which helps maintain integrity under operating conditions. The black color is standard for radiator hoses, and the hose does not include a heat shield or protective sleeve. It meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, confirming its suitability for automotive coolant systems.

Applications and Problem Solving

• Replacement for worn or cracked radiator hoses in Lexus LS400 and Mercedes-Benz 300SD, 300SE, S320
• Prevents coolant leaks caused by hose degradation
• Maintains proper coolant flow to avoid engine overheating
• Addresses fitment issues with curved radiator hose routing
• Supports cooling system integrity in older luxury vehicles

Installation Notes and Tips

Ensure the engine is cool before removing the old radiator hose. Verify the hose ends match the 1 1/2 inch inside diameter connections on your vehicle. Properly secure hose clamps to prevent leaks. Inspect surrounding components for wear during installation. The 15 1/2 inch trunk height should be checked against the vehicle’s routing path to confirm fit.

Quality Assurance and Warranty

Dayco manufactures the 70764 radiator hose to meet SAE standards, ensuring consistent quality and performance. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are designed for durability in automotive cooling systems.