Dayco 70635 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 70635

The Dayco Curved Radiator Hose 70635 is designed to provide reliable coolant flow for select Buick, Chevrolet, 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 for heat and chemical resistance
• Black color with a curved design for precise fitment
• 1 1/2 inch inside diameter on both ends for uniform coolant flow
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Single inside diameter hose type without heat shield or protective sleeve
• Trunk height of 29 inches for proper routing in engine bay

Detailed Product Description

The Dayco Curved Radiator Hose 70635 is a single inside diameter hose made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. This hose features a consistent 1 1/2 inch inside diameter on both ends, ensuring smooth coolant circulation without restrictions. The black curved hose is designed to fit specific models including the Buick Skylark, Chevrolet Camaro, and Pontiac Firebird, among others. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive cooling systems. The hose does not include a heat shield or protective sleeve, which is typical for this type of radiator coolant hose.

About the Curved Radiator Hose Product Line

Dayco's Curved Radiator Hose line focuses on providing hoses with precise bends and dimensions to match factory specifications. This ensures proper coolant flow and fitment in vehicles where straight hoses would not align correctly. The 70635 part number is part of this line, offering a tailored solution for various classic and modern GM trucks and cars, maintaining OEM standards for durability and performance.

Applications and Common Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Buick, Chevrolet, Oldsmobile, and Pontiac vehicles
• Prevention of coolant leaks caused by hose degradation or improper fit
• Restoration of proper coolant flow in overheating or engine temperature regulation problems
• Addressing hose swelling or softening due to heat exposure
• Ensuring compatibility with factory cooling system routing and connections

Installation Notes and Tips

• Verify hose inside diameter and length match your vehicle’s specifications before installation
• Ensure clamps are properly tightened to prevent leaks without damaging the hose
• Inspect surrounding components for wear or damage during replacement
• Flush the cooling system if contamination or debris is present before installing the new hose
• Allow the engine to cool completely before removing the old hose to avoid burns

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70635 to meet SAE standards, ensuring reliable performance under typical operating conditions. The EPDM material provides resistance to heat and coolant chemicals, contributing to the hose’s longevity. Warranty details should be confirmed with the original equipment manufacturer or distributor, as coverage may vary.