Gates 51557 Radiator Coolant Hose - Water Pump To Block

Overview of Gates Molded Coolant Hose 51557

The Gates Molded Coolant Hose 51557 is engineered for reliable cooling system performance in select BMW models. Designed with durable EPDM, plastic, and steel materials, this radiator coolant hose ensures consistent fluid flow and heat resistance for vehicles like the BMW 320i and X5.

• Constructed from EPDM, plastic, and steel for durability and heat resistance
• Molded design with a centerline length of 711 mm (28 inches)
• Features one branch with a female quick connector and one quick connect fitting
• End 1 inside diameter: 15 mm (0.6 inches); End 2 inside diameter: 36 mm (1.4 inches)
• Compatible with multiple BMW models including 228i, 328i xDrive, 428i, 528i xDrive, X3, and X5

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-engineered hoses that are molded to exact specifications for optimal fit and function. This product line integrates modular components such as branches and quick connectors to simplify installation and improve coolant system reliability. The 51557 hose exemplifies this approach with its molded construction and integrated female quick connector.

Detailed Product Description

The Gates 51557 radiator coolant hose is designed to maintain efficient coolant flow within the engine cooling system. Its EPDM rubber construction offers resistance to heat, ozone, and coolant chemicals, while the plastic and steel reinforcements provide structural integrity. The hose measures 711 mm in centerline length, with two different inside diameters at each end (15 mm and 36 mm) to match specific radiator and engine connections. The molded design includes one branch and a female quick connector, facilitating a secure and leak-resistant fit without the need for additional clamps or springs.

Applications and Problem Solving

• Replacement for worn or cracked radiator coolant hoses in BMW 320i, 328i, and X5 models
• Addresses coolant leaks caused by hose degradation or improper fit
• Prevents overheating by ensuring proper coolant circulation
• Eliminates issues related to hose collapse or swelling under pressure
• Compatible with vehicles requiring molded hoses with quick connect fittings

Installation Notes and Tips

When installing the Gates Molded Coolant Hose 51557, ensure the hose is routed according to the vehicle manufacturer’s specifications to avoid kinks or interference with moving parts. The integrated female quick connector simplifies attachment to the corresponding male fitting, but verify the connection is fully seated to prevent leaks. Inspect surrounding components for wear or damage during installation to maintain overall cooling system integrity.

Quality Assurance and Warranty

Gates manufactures the Molded Coolant Hose 51557 to meet or exceed OEM standards for durability and performance. The use of EPDM and reinforced materials ensures long service life under typical operating conditions. While specific warranty details are not provided, Gates products generally come with a limited warranty against defects in materials and workmanship.