Dayco 70735 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 70735

The Dayco Curved Radiator Hose 70735 is designed to provide reliable coolant flow for a range of GM vehicles. Engineered with durable EPDM material, this dual inside diameter hose ensures a secure fit and long-lasting performance in Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models.

• Constructed from high-quality EPDM for heat and chemical resistance
• Dual inside diameters: 1 1/2 inch and 1 13/16 inch ends
• Black color for standard OEM appearance
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 18 inches for precise fitment
• Compatible with multiple GM trucks and passenger vehicles

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on delivering hoses with specific bends and dual inside diameters to match original equipment configurations. This product line is engineered to maintain proper coolant flow and fitment in vehicles requiring curved hose designs, such as the 70735, which supports a variety of GM trucks and cars with differing inlet and outlet sizes.

Detailed Product Description

This radiator coolant hose features EPDM construction, known for its resistance to heat, ozone, and coolant chemicals, making it suitable for extended use in engine cooling systems. The dual inside diameter design (1 1/2 inch on one end and 1 13/16 inch on the other) allows for a precise connection between different radiator and engine fittings. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator hose. Its 18-inch trunk height ensures compatibility with a wide range of GM vehicles, including Chevrolet C10, GMC K1500, Pontiac Bonneville, and Buick LeSabre models.

Common Applications and Problem Solving

• Replacement for cracked or leaking radiator coolant hoses
• Restores proper coolant flow in Buick LeSabre and Chevrolet Impala cooling systems
• Prevents overheating caused by deteriorated or collapsed hoses
• Addresses fitment issues in GM trucks like the GMC K20 Suburban
• Maintains engine temperature regulation in Pontiac Catalina and Oldsmobile Delta 88

Installation Notes and Tips

Ensure the engine is cool before removing the old hose to avoid burns. Verify the hose ends match the radiator and engine inlet diameters (1 1/2 inch and 1 13/16 inch). Use appropriate clamps to secure the hose and check for leaks after installation. The curved design requires proper alignment to avoid kinks or stress points.

Quality Assurance and Warranty

Dayco manufactures the 70735 radiator hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring durability and performance under typical operating conditions. While specific warranty details are not provided, Dayco products generally adhere to industry quality controls and are suitable for professional automotive repair and maintenance.