URO 11531289859 Radiator Coolant Hose - Lower

BMW Lower Radiator Coolant Hose

This URO radiator coolant hose is a direct-fit replacement for select BMW lower hose applications. Built to OE dimensions and shape, it supports straightforward installation on classic BMW cooling systems where a precise fit matters.

• Fits BMW 533i, lower, 1983-1984
• Fits BMW 535i, lower, 1985-1988
• Fits BMW 535is, lower, 1988
• Fits BMW 635CSi, lower, 1985-1986
• Fits BMW 635CSi, lower, 1987, Production Date: Through 5/87
• Fits BMW 735i, lower, 1985-1987
• Precision-molded to OE dimensions and shape
• EPDM construction resists electrochemical degradation, heat, and ozone
• Temperature rated from -40°F to 275°F (-40°C to 135°C)
• 24-month / unlimited mileage warranty

Key Features

• URO part number 11531289859 for BMW cooling system service
• Direct replacement for lower radiator hose applications
• Engineered for a factory-style fit on BMW 533i, 535i, 535is, 635CSi, and 735i models
• Durable EPDM material helps resist internal breakdown from electrolysis
• Built to handle engine heat and ozone exposure

Detailed Description

URO 11531289859 is a lower radiator coolant hose for select BMW models, including the 1983-1984 BMW 533i, 1985-1988 BMW 535i, 1988 BMW 535is, 1985-1986 BMW 635CSi, 1987 BMW 635CSi through 5/87 production, and 1985-1987 BMW 735i. This hose is molded to OE dimensions and shape to match the original routing and connection points used in these BMW cooling systems. The EPDM construction is formulated to resist heat, ozone, and electrochemical degradation, helping maintain hose integrity in demanding underhood conditions. Part number 11531289859 is also referenced as BMW 11 53 1 268 749 and 11 53 1 289 859.

What It Helps Address

• Cracked or hardened lower radiator hose material
• Coolant leaks at the lower hose connection
• Improper fit from non-OE-shaped replacement hoses
• Heat-related hose deterioration in older BMW cooling systems
• Electrolysis-related rubber breakdown inside the hose

Installation Notes and Tips

Verify model year, engine application, and production date before installation, especially for the 1987 BMW 635CSi through 5/87 production note. Inspect hose clamps, thermostat housing, radiator necks, and adjacent cooling components for wear before reassembly. Confirm the hose is routed exactly as the original lower radiator hose to avoid kinks or tension at the connections.

Quality Assurance

This URO radiator coolant hose includes a 24-month / unlimited mileage warranty. It is manufactured for guaranteed fitment and built to OE dimensional standards for dependable service on compatible BMW applications.