URO 11517805811 Engine Coolant Thermostat / Water Inlet Assembly

Engine Coolant Thermostat for BMW Cooling Service

This URO engine coolant thermostat / water inlet assembly is built for direct replacement on select BMW diesel applications. It combines a thermostat housing with a factory-style layout to support reliable coolant flow, secure hose attachment, and straightforward bolt-on service.

Key Features

• Fits 2009-2013 BMW X5 and 2009-2011 BMW 335d
• OE-style high-flow design for consistent engine cooling performance
• Housing manufactured to factory dimensions for easier installation and hose connection alignment
• Black PPS housing material for temperature stability
• Gasket or seal included for service-ready installation
• Bleeder screw not included
• Part number 11517805811 for direct catalog lookup

Detailed Description

URO part number 11517805811 is an engine coolant thermostat / water inlet assembly designed for BMW cooling system repair. It is shaped to match factory housing dimensions and uses a temperature-stable PPS housing to help resist warping or cracking that can lead to coolant leakage. This assembly is a practical choice for BMW X5 and BMW 335d owners replacing a worn thermostat housing, coolant inlet, or related cooling component.

This part cross-references Bosch 15309 for the same application.

What It Helps Fix

• Coolant leaks at the thermostat housing
• Engine temperature control issues caused by a failing thermostat
• Cracked or warped plastic housing surfaces
• Poor hose sealing at the water inlet connection
• Cooling system service needs on BMW X5 and BMW 335d models

Installation Notes

Verify engine code and OE part number before installation. Inspect mating surfaces, hoses, and clamps for wear, and replace any damaged seals or coolant lines during service. Because this assembly is built to factory housing dimensions, it is intended for direct bolt-on replacement on the listed BMW applications.

Quality Assurance

URO backs this thermostat housing assembly with a 24 Month Unlimited Mileage Warranty. The design follows OE-style cooling system requirements and uses temperature-stable housing material to support long-term service in BMW cooling applications.