Dayco 73123 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 73123

The Dayco Curved Radiator Hose 73123 is engineered for reliable coolant flow in BMW vehicles, specifically designed for the BMW X1 and Z4 models. Constructed from durable EPDM material, this branched radiator coolant hose ensures consistent performance under varying engine temperatures.

• Made from high-quality EPDM material for heat and chemical resistance
• Branched hose design with multiple inside diameters for precise fitment
• Compatible with BMW X1 and Z4 models
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color with a trunk height of 15 1/2 inches

Detailed Product Features and Specifications

The Dayco Curved Radiator Hose 73123 features a branched hose design with four distinct inside diameters: 1 7/16 inches on both End 1 and End 2, 5/16 inches on End 3, and 3/8 inches on End 4. The corresponding outside diameters are 1 7/16 inches for Ends 1 and 2, 7/8 inch for End 3, and 3/8 inch for End 4. This configuration allows for efficient coolant routing within the cooling system of BMW X1 and Z4 vehicles. The hose is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals, ensuring durability and longevity. It complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive coolant applications.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose product line focuses on providing hoses with specialized shapes and branched configurations to accommodate complex coolant routing requirements in modern vehicles. This line is designed to meet precise OEM specifications, offering reliable fitment and performance. The 73123 part exemplifies this approach by combining multiple hose diameters and a curved design to fit specific BMW models without modification.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in BMW X1 and Z4
• Resolving coolant leaks caused by hose degradation or damage
• Maintaining proper coolant flow to prevent engine overheating
• Ensuring secure connections in branched coolant systems
• Upgrading to a hose that meets SAE specifications for improved reliability

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 73123, ensure the vehicle is cool and the cooling system is depressurized. Verify the hose orientation matches the original routing to maintain proper coolant flow. Inspect all clamps and connections for wear and replace if necessary to prevent leaks. The branched design requires careful alignment of each end to corresponding fittings on the BMW X1 or Z4 cooling system.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 73123 to meet stringent SAE standards, ensuring consistent quality and performance. The EPDM material and construction provide resistance to heat and coolant chemicals, contributing to the hose's durability. Warranty details should be confirmed with the original equipment manufacturer or supplier, as they may vary.