Gates 51580 Radiator Coolant Hose - Upper

Overview of Gates Molded Coolant Hose 51580

The Gates Molded Coolant Hose 51580 is engineered for reliable cooling system performance in select BMW models. Designed with durable EPDM, plastic, and steel materials, 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 2 branches and 4 female quick connectors for secure fitment
• Centerline length options of 10, 13.5, and 343 mm for precise installation
• Inside diameters of 30 mm (1.2 inches) on both ends, plus additional branch diameters
• Compatible with multiple BMW models including 535i, 640i, and 740Li series

About the Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on pre-formed radiator hoses designed to fit specific vehicle cooling systems accurately. This product line incorporates molded shapes and integrated quick connectors to simplify installation and maintain coolant system integrity. The 51580 part benefits from this design approach, offering a modular hose with two branches and four quick connect fittings to match the complex routing in BMW cooling systems.

Detailed Product Description

The Gates 51580 radiator coolant hose is a molded, modular component featuring two branches and four female quick connectors, facilitating a secure and leak-resistant connection within the cooling system. Its construction from EPDM rubber, plastic, and steel materials provides resistance to heat, pressure, and coolant chemicals. The hose includes multiple inside diameter measurements—30 mm (1.2 inches) on both main ends and smaller diameters on branches—to accommodate specific coolant flow paths. With centerline lengths of 10 mm, 13.5 mm, and 343 mm, this hose fits the complex routing requirements of BMW 535i, 640i, and 740Li models, including xDrive and Gran Coupe variants.

Compatible BMW Models and Common Applications

• BMW 535i, 535i GT, 535i GT xDrive, 535i xDrive
• BMW 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe, 640i xDrive Gran Turismo
• BMW 740Li, 740Li xDrive
• Used to replace worn or damaged radiator coolant hoses
• Addresses coolant leaks, hose swelling, or cracking issues
• Restores proper coolant flow and system pressure

Installation Notes and Tips

Ensure the cooling system is cool and depressurized before removing the old hose. Verify all quick connect fittings are fully seated and locked to prevent leaks. Inspect surrounding components for wear or damage during installation. Proper routing is critical to avoid kinks or interference with engine parts. Use compatible clamps or connectors as specified by the vehicle manufacturer.

Quality Assurance and Warranty

Gates Molded Coolant Hose 51580 is manufactured to meet OEM specifications for fit, form, and function. The use of EPDM, plastic, and steel materials ensures durability under typical operating conditions. While specific warranty details are not provided here, Gates products generally come with a limited warranty against defects in material and workmanship. Consult product documentation or authorized sources for exact warranty terms.