Genuine 11531438633 Engine Coolant Hose

Engine Coolant Hose for BMW Cooling Service

This Genuine engine coolant hose, part number 11531438633, routes coolant between the expansion tank and the additional water pump. It is a direct-fit cooling system hose for select BMW 525i, 530i, and 528i applications.

Key Features

• Genuine OE replacement coolant hose
• Fits BMW cooling system routing from expansion tank to additional water pump
• Direct-fit application for select E39 and E46-era BMW models
• Part number 11531438633 for accurate ordering and service matching

Fitment Details

• Fits 2001-2003 BMW 525i, N/A, expansion tank to additional water pump.
• Fits 2001-2003 BMW 530i, N/A, expansion tank to additional water pump.
• Fits 1997-2000 BMW 528i, N/A, expansion tank to additional water pump.

What This Hose Helps Address

• Coolant leaks at the hose connection points
• Cracked, hardened, or heat-aged hose material
• Loss of coolant flow between the expansion tank and additional water pump
• Cooling system service on BMW 525i, 530i, and 528i models

Installation Notes and Tips

Verify the hose routing against the existing cooling system layout before installation. Inspect adjoining fittings, clamps, and plastic connectors for wear or damage, and replace any compromised components during service. Confirm the part number 11531438633 matches the vehicle application before installation.

Quality Assurance

Genuine parts are built to OE specifications for fit and function in the listed BMW applications. This part cross-references BMW OE part number 11531438633 for the same application.