Dayco 72703 Radiator Coolant Hose - Lower

Overview of Dayco Curved Radiator Hose 72703

The Dayco Curved Radiator Hose 72703 is engineered for reliable coolant flow in select BMW models. Designed with durable EPDM material, this branched radiator coolant hose ensures consistent performance under typical engine operating conditions.

• Constructed from high-quality EPDM for heat and chemical resistance
• Branched hose design with three connection points
• Compatible with multiple BMW models including 320i, 325i, 328i, and 330i series
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color with precise inside and outside diameters for secure fitment

Detailed Product Features and Specifications

The Dayco Curved Radiator Hose 72703 features a branched hose design with three ends, each tailored for specific connections within the cooling system. Ends 1 and 2 have an inside diameter of 1 1/2 inches and an outside diameter of 2 1/16 inches, while end 3 measures 1/2 inch inside and outside diameter. The hose is constructed from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, making it suitable for maintaining coolant flow in BMW vehicles. This hose does not include a heat shield or protective sleeve, focusing on core functionality within the cooling system. The trunk height is 14 inches, providing the necessary length for proper routing in compatible BMW models.

About the Curved Radiator Hose Product Line

Dayco's Curved Radiator Hose line is designed to address complex coolant routing needs in modern vehicles. This product line specializes in branched and curved hose configurations that accommodate multiple connection points, ensuring efficient coolant distribution. The 72703 part exemplifies this approach by offering a branched hose solution tailored for BMW cooling systems, meeting SAE standards for durability and performance.

Compatible BMW Models and Common Applications

• BMW 320i, 323Ci, 323i
• BMW 325Ci, 325i, 325xi
• BMW 328Ci, 328i
• BMW 330Ci, 330i, 330xi

This radiator coolant hose is used to replace worn or damaged hoses that can cause coolant leaks, overheating, or reduced cooling efficiency. It addresses issues such as:

• Coolant leaks due to cracked or brittle hoses
• Reduced coolant flow from collapsed or clogged hoses
• Overheating caused by compromised hose integrity
• Incompatibility with OEM hose dimensions or materials
• Wear from exposure to engine heat and chemicals

Installation Notes and Tips

When installing the Dayco Curved Radiator Hose 72703, ensure all connections are clean and free of debris. Verify that the hose routing matches the original configuration to avoid kinks or stress points. Use appropriate clamps to secure each end firmly, paying attention to the branched connection for proper sealing. It is recommended to inspect adjacent cooling system components during installation for any signs of wear or damage.

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72703 to meet SAE J20R4 Class D-1 and SAE J1684 Type EC standards, ensuring compliance with industry requirements for coolant hoses. The EPDM material provides resistance to heat and coolant chemicals, contributing to the hose's durability. Warranty details are subject to Dayco's standard policies; please refer to official documentation for specific coverage information.