Fitment: The thermostat housing assembly fit for BMW 535i GT xDrive 2011-2016, for BMW 535i GT 2010-2017, for BMW 535i xDrive 2011-2016, for BMW 535i 2011-2016, for BMW 640i Gran Coupe 2014-2015, for BMW ActiveHybrid 5 2012-2016, for BMW 740i 2013-2015, for BMW 640i xDrive 2014-2015. OE Number: The thermostat housing assembly replacement number is 11538671516, 11537601159. Function: Thermostat controls the temperature levels depending on the vehicle's driving conditions/ load. Fix the check engine light issue and no engine hiccups problems, and fix the ​engine overheating or over cooling problem. Installation: First find the thermostat, most thermostats are located where the top radiator hose, then remove the clamp, and please handle the coolant fluid carefully. Then pull off the hose, remove the thermostat housing bolts and replace the new thermostat housing assembly. When to replace the thermostat: When your car has been overheating or doesn’t warm up properly, you may need to replace the thermostat. The thermostat assembly is made of good quality materials, improving performance, durability and tolerance. Feature:
Automatically adjust the water yield flowing into the radiator according to the temperature of the cooling water, so as to ensure that the engine works within the appropriate temperature range.
Made of durable material for long service life.
Good performance, directly replaces the old or broken one.
This is a non-OEM product, accessory only!

Specification:
Material: Plastic, Metal
Color: Black
OE Number: 11538671516, 11537601159
Pin Number: 2 Pins
Size: 14x12x9cm/ 5.51"x4.72"x3.54"(L*W*H)
Installation Hole Diameter: 9mm / 0.35"
Hole Inner Diameter: 16mm / 0.63", 21mm / 0.83", 32mm / 1.26"

Fitment:
for BMW 535i GT xDrive 2011-2016
for BMW 535i GT 2010-2017
for BMW 535i xDrive 2011-2016
for BMW 535i 2011-2016
for BMW 640i Gran Coupe 2014-2015
for BMW ActiveHybrid 5 2012-2016
for BMW 740i 2013-2015
for BMW 640i xDrive 2014-2015

Package Included:
1 x Thermostat Housing Assembly