Gates 51556 Radiator Coolant Hose - Reservoir To Engine

Reliable Radiator Coolant Hose for BMW 545i and 645Ci

The Gates Molded Coolant Hose 51556 is engineered to meet the cooling system demands of BMW 545i and 645Ci models. Designed with durable materials and precise dimensions, this radiator coolant hose ensures efficient coolant flow and system integrity.

• Constructed from EPDM, plastic, and steel for durability and heat resistance
• Molded design with integrated branch and male quick connector
• Centerline length of 762 mm (30 inches) for exact fitment
• Multiple inside diameter measurements for precise connection points
• Compatible with BMW 545i and 645Ci cooling systems

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates features hoses designed with molded construction to provide a secure, leak-resistant fit. This product line incorporates modular components such as branches and quick connectors to simplify installation and ensure compatibility with specific vehicle cooling systems. The 51556 part benefits from this design approach, offering a reliable replacement hose tailored for BMW applications.

Detailed Product Description

The Gates 51556 radiator coolant hose is made from a combination of EPDM rubber, plastic, and steel, materials chosen for their resistance to heat, pressure, and coolant chemicals. The molded hose includes one branch and a male quick connector, facilitating a modular and secure connection within the cooling system. With a centerline length of 762 mm (30 inches), it fits precisely in the cooling circuit of BMW 545i and 645Ci models. The hose features multiple inside diameters at its ends—ranging from 0.2 to 0.75 inches—ensuring compatibility with various radiator and engine fittings. This hose does not contain a spring, which is typical for molded hoses designed to maintain shape and flow without additional reinforcement.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in BMW 545i and 645Ci
• Resolving coolant leaks caused by hose degradation or damage
• Maintaining proper coolant flow to prevent engine overheating
• Ensuring secure connections with quick connector fittings
• Upgrading to a molded hose for improved durability and fitment

Installation Notes and Tips

When installing the Gates Molded Coolant Hose 51556, ensure the cooling system is fully drained and cooled to avoid injury. Verify the hose orientation and connection points match the OEM configuration, paying attention to the branch and quick connector locations. Use appropriate clamps or fittings as required by the vehicle manufacturer. Inspect all connections for leaks after installation and during initial engine operation.

Quality Assurance and Warranty

Gates manufactures the Molded Coolant Hose 51556 to meet or exceed OEM specifications for durability and performance. The use of EPDM, plastic, and steel materials ensures resistance to heat, pressure, and coolant chemicals. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.