Replacement REPB318011 Engine Coolant Thermostat with Housing Assembly

The Replacement REPB318011 is an engine coolant thermostat with integrated housing, engineered as a direct OEM replacement for BMW vehicles. Replacing OEM part number 11537586885 (supersedes 11537502779 and 11530150976), this thermostat assembly is designed to restore proper cooling system function and protect your engine from temperature-related damage.

A properly functioning thermostat is critical to engine health. When stuck open, the engine cannot reach normal operating temperature; when stuck closed, coolant flow is restricted and the engine overheats. This complete assembly — including the thermostat, housing, and gasket/O-ring seal — ensures a straightforward, leak-free installation without the need for additional components.

Key Features:

• Direct OEM replacement — no modification required for installation
• Complete assembly includes thermostat, housing, and O-ring/gasket
• Stainless steel construction for corrosion resistance and long service life
• Opening temperature: 101°C (213.8°F)
• Replaces OEM part number 11537586885 (also supersedes 11537502779, 11530150976, 11530304425)

This thermostat with housing is a reliable aftermarket solution for restoring BMW cooling system performance. Always verify fitment using your vehicle's VIN before installation.