Dayco 70548 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 70548

The Dayco Curved Radiator Hose 70548 is designed to provide reliable coolant flow for select Buick, Oldsmobile, and Pontiac vehicles. Engineered with durable EPDM material, this black single inside diameter hose ensures consistent performance in demanding engine cooling systems.

• 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
• Trunk height of 22 inches suitable for specific GM models

Detailed Product Description

The Dayco Curved Radiator Hose 70548 is a single inside diameter hose made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. This hose features a consistent 1 1/2 inch inside diameter on both ends, ensuring a secure and leak-free connection within the cooling system. The black curved hose is designed without a heat shield or protective sleeve, focusing on a straightforward replacement part that meets SAE J20R4 Class D-1 and SAE J1684 Type EC standards for radiator coolant hoses.

The Curved Radiator Hose product line from Dayco specializes in hoses shaped to fit specific engine layouts, providing a precise fit for improved coolant circulation and reduced stress on connections. This hose is tailored for use in various Buick, Oldsmobile, and Pontiac models, including the Buick LeSabre, Riviera, and Skylark, Oldsmobile Cutlass and Delta 88, and Pontiac Grand LeMans and Custom Cruiser.

Compatible Vehicles and Applications

• Buick LeSabre, Riviera, Skylark
• Oldsmobile Cutlass, Cutlass Supreme, Cutlass Salon, Delta 88
• Pontiac Grand LeMans, Custom Cruiser, LeMans

Common Issues Addressed by This Radiator Hose

• Prevents coolant leaks caused by cracked or worn hoses
• Maintains proper coolant flow to avoid engine overheating
• Replaces hoses that have become brittle or swollen over time
• Eliminates coolant contamination from hose deterioration
• Ensures secure connections to radiator and engine fittings

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 70548, ensure the engine is cool to prevent burns. Verify the hose routing matches the original to avoid kinks or stress points. Use appropriate clamps to secure both ends firmly, and inspect adjacent components for wear or damage during replacement. This hose does not include a heat shield or protective sleeve, so take care to avoid contact with sharp edges or excessive heat sources.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 70548 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for radiator coolant hoses. The EPDM material offers durability against heat and coolant exposure. Warranty details are provided by Dayco and should be confirmed at the time of purchase.