Dayco 72788 Radiator Coolant Hose - Upper

Overview of Dayco Curved Radiator Hose 72788

The Dayco Curved Radiator Hose 72788 is engineered for reliable coolant flow in select BMW models. Designed with durable EPDM material, this branched radiator coolant hose ensures consistent performance under varying engine temperatures.

• Constructed from high-quality EPDM for heat and chemical resistance
• Branched hose design with multiple inside diameters for precise fit
• Compatible with BMW 128i, 323i, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, and Z4 models
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Black color with a trunk height of 10 1/2 inches

Detailed Product Description

The Dayco Curved Radiator Hose 72788 is a branched radiator coolant hose designed to maintain optimal coolant circulation in various BMW vehicles. Made from EPDM (ethylene propylene diene monomer), this hose offers excellent resistance to heat, ozone, and coolant chemicals, ensuring durability and longevity. The hose features multiple inside diameters—1 1/2 inches on both ends 1 and 2, 7/8 inch on end 3, and 5/16 inch on end 4—allowing it to connect seamlessly with different radiator and engine components. Its black color and 10 1/2 inch trunk height provide a precise fit and reliable sealing without the need for additional protective sleeves or heat shields.

About the Curved Radiator Hose Product Line

The Dayco Curved Radiator Hose line focuses on branched hose designs that accommodate complex coolant routing in modern engines. This product line emphasizes material quality and dimensional accuracy to meet OEM specifications, such as SAE J20R4 Class D-1 and SAE J1684 Type EC standards. The 72788 part exemplifies this approach by combining multiple hose diameters in a single unit, tailored for specific BMW models.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in BMW 3 Series and Z4 models
• Resolving coolant leaks caused by hose degradation or improper fit
• Preventing overheating issues related to compromised coolant flow
• Addressing coolant contamination from hose material breakdown
• Ensuring proper coolant routing in branched hose configurations

Installation Notes and Tips

• Verify compatibility with your BMW model and engine before installation
• Inspect all hose connections and clamps for wear and replace if necessary
• Ensure the hose is routed without kinks or sharp bends to maintain coolant flow
• Use appropriate coolant fluid as specified by the vehicle manufacturer
• Check for leaks after installation and during initial engine operation

Quality Assurance and Warranty

Dayco manufactures the Curved Radiator Hose 72788 to meet stringent SAE specifications, including J20R4 Class D-1 and J1684 Type EC, ensuring material and dimensional quality. While specific warranty details are not provided here, Dayco products typically come with manufacturer-backed warranties covering defects in material and workmanship. For exact warranty terms, consult the product documentation or authorized distributors.