URO 11537545890PRM Radiator Coolant Hose

BMW Coolant Hose Connector Upgrade

This URO radiator coolant hose assembly is built for BMW cooling system service where the original plastic connector is prone to heat-related failure. It uses an HD aluminum connector with EPDM synthetic rubber to replace the OEM plastic design on select BMW 128i, 328i, 328i xDrive, 328xi, Z4, 325i, 325xi, 330i, and 330xi applications.

Part number 11537545890PRM is engineered for direct fitment at the cylinder head to thermostat housing connection and is part of URO Premium’s re-engineered product line for failure-prone cooling components.

Key Features

• HD aluminum connector replaces the OEM plastic connector
• EPDM synthetic rubber construction for heat and ozone resistance
• ECD-resistant material helps reduce electrolysis-related rubber breakdown
• Precision-molded to OE dimensions and shape for straightforward installation
• Temperature rating from -40°F to 275°F (-40°C to 135°C)
• Limited lifetime, unlimited mileage warranty
• URO Premium design with upgraded materials and revised construction

Detailed Description

Part number 11537545890PRM is a radiator coolant hose assembly for BMW cooling systems that connects the cylinder head to the thermostat housing. The aluminum connector addresses a common weakness in the original plastic design, which can become brittle after repeated heat cycles and fail over time. The EPDM hose material is selected for durability in high-temperature engine environments and resistance to ozone and electrochemical degradation. This makes it a practical choice for BMW 128i and BMW 328i cooling system repair, as well as other listed 3 Series and Z4 applications.

URO Premium products are re-engineered to improve durability in known failure points while maintaining OE-style dimensions for fit and serviceability. This part cross-references VAICO V20-1260 for the same application.

Common Problems This Part Can Address

• Cracked or broken OEM plastic coolant connector
• Coolant leaks at the cylinder head to thermostat housing connection
• Cooling system seepage caused by heat-cycle fatigue
• Rubber deterioration from engine heat, ozone, or electrolysis
• Repeat failures from brittle factory connector material

Installation Notes and Tips

• Fits 2008-2013 BMW 128i, N/A; cylinder head to thermostat housing
• Fits 2007-2013 BMW 328i, N/A; cylinder head to thermostat housing
• Fits 2009-2013 BMW 328i xDrive, N/A; cylinder head to thermostat housing
• Fits 2007-2008 BMW 328xi, N/A; cylinder head to thermostat housing
• Fits 2006-2008 BMW Z4, N/A; cylinder head to thermostat housing
• Fits 2006 BMW 325i, N/A; cylinder head to thermostat housing
• Fits 2006 BMW 325xi, N/A; cylinder head to thermostat housing
• Fits 2006 BMW 330i, N/A; cylinder head to thermostat housing
• Fits 2006 BMW 330xi, N/A; cylinder head to thermostat housing

Verify the existing hose routing and connector style before installation. Inspect adjacent cooling system components for heat damage, hardened rubber, or coolant residue so the repair addresses the full leak source.

Quality Assurance

URO Premium part 11537545890PRM includes a limited lifetime unlimited mileage warranty. The product line is identified by the PRM suffix and is built with upgraded materials to improve reliability over the original plastic connector design.