URO 11538671516 Engine Coolant Thermostat

Engine Coolant Thermostat for BMW Cooling Systems

This URO engine coolant thermostat is built for direct replacement in select BMW cooling systems, with OE-style flow characteristics and factory-matched housing dimensions. It is a practical choice for maintaining stable coolant control on applications such as the BMW 535i, 535i xDrive, and 740i.

• OE-style high-flow thermostat design for consistent engine cooling performance
• Housing assembly matches factory dimensions for bolt-on installation and secure hose connections
• Temperature-stable PA6 housing material helps resist warping and cracking
• Black finish
• Opening temperature: 108
• Inside diameter: 32.4
• URO part number 11538671516

Fitment Details

• Fits 2010-2017 BMW 535i GT, N/A
• Fits 2011-2017 BMW 535i GT xDrive, N/A
• Fits 2011-2016 BMW 535i, N/A
• Fits 2011-2016 BMW 535i xDrive, N/A
• Fits 2012-2016 BMW ActiveHybrid 5, N/A
• Fits 2014-2015 BMW 640i xDrive, N/A
• Fits 2014-2015 BMW 640i xDrive Gran Coupe, N/A
• Fits 2013-2015 BMW 740i, N/A

What This Thermostat Helps Address

• Engine running too cool or too hot due to thermostat control issues
• Coolant temperature instability during normal driving
• Leaks caused by warped or cracked thermostat housing material
• Poor hose sealing at the thermostat housing connection
• Cooling system service needs on BMW 535i and 740i applications

Installation Notes

Verify the part number 11538671516 against the original thermostat assembly before installation. This unit uses a PA6 housing and does not include a gasket or seal, so the existing sealing components should be inspected and replaced as needed during service. The design is intended for factory-style bolt-on fitment on the listed BMW applications.

Quality Assurance

URO backs this thermostat assembly with a 24 Month Unlimited Mileage Warranty. The housing is manufactured to factory dimensions and uses temperature-stable material to support reliable cooling-system service on the listed BMW models. This part cross-references URO-017433 for the same application.