Dayco 73030 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 73030

The Dayco Curved Radiator Hose 73030 is designed specifically for Buick Lucerne 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 rubber for heat and chemical resistance
• Dual inside diameter design: 1 9/32 inches and 1 17/32 inches
• Black color for standard OEM appearance
• Complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Trunk height of 12 1/2 inches for proper routing
• Outside diameters: 1 21/32 inches (End 1) and 1 15/16 inches (End 2)
• Compatible with Buick Lucerne radiator coolant systems

Detailed Product Description

The Dayco Curved Radiator Hose 73030 is engineered to meet the cooling system demands of the Buick Lucerne. Its EPDM construction offers resistance to heat, ozone, and coolant chemicals, ensuring durability under typical engine operating conditions. The hose features a dual inside diameter design, with one end measuring 1 9/32 inches and the other 1 17/32 inches, allowing for a secure and leak-free connection to the radiator and engine fittings. The black finish maintains a clean, OEM look while the hose’s trunk height of 12 1/2 inches supports proper installation and routing within the engine bay.

The Curved Radiator Hose product line from Dayco focuses on delivering hoses shaped to fit specific vehicle applications, reducing the need for modifications and ensuring optimal coolant flow. This hose does not include a heat shield or protective sleeve, consistent with the original equipment design for the Buick Lucerne.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses on Buick Lucerne vehicles
• Resolving coolant leaks caused by hose deterioration or swelling
• Preventing engine overheating due to compromised coolant flow
• Maintaining proper coolant system pressure and temperature regulation
• Ensuring compatibility with OEM cooling system components

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 73030, ensure the hose is routed according to the vehicle manufacturer’s specifications to avoid kinks or contact with moving parts. Verify that the hose ends match the radiator and engine fittings by checking the inside diameters of 1 9/32 inches and 1 17/32 inches. Use appropriate clamps to secure the hose and prevent leaks. Inspect the cooling system for any additional wear or damage during replacement.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 73030 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. The EPDM material and construction methods provide durability and resistance to typical automotive coolant system conditions. Warranty details should be confirmed with the product documentation or supplier.