[Part Numbers] Part Number: 17137567462 ; With Cap and Sensor. Number of Pins:2. [Fitment] for BMW 128i 2008-2013 3.0L L6 - Gas,for BMW 135i 2008-2011 3.0L L6 - Gas,for BMW 328i 2007-2013 3.0L L6 - Gas,for BMW 328i xDrive 2009-2013 3.0L L6 - Gas,for BMW 335i 2007-2010 3.0L L6 - Gas,for BMW 335i xDrive 2009-2013 3.0L L6 - Gas,for BMW 335is 2011-2013 3.0L L6 - Gas,for BMW M3 2008-2013 4.0L V8 - Gas,for BMW X1 2014-2015 2.0L L4 - Gas, 3.0L L6 - Gas [Function] Replace the coolant radiator reservoir tank to keep your engine at the right temperature under a variety of conditions and fix the problem of engine stall due to engine overheating. [Installation Instruction] Turn off and cool down the car, remove the bolts and the reservoir, allow the remaining coolant to flow back into the drain pan, replace the new reservoir tank and reinstall the coolant hose to the radiator and tighten the clamp, finally check if function well. [Durable Material] Using durable material and plastic construction aims to prolong service life, anti rust, anti oxidation, anti fluid loss, and anti deformation, and it will not fall off after prolonged use. Feature:
The coolant reservoir is attached to the radiator and the engine with hoses and is an important component of the cooling system, which holds the excess coolant fluid used to cool the engine.
When a coolant expansion tank has any issues it can lead to issues that: Constantly low on coolant, coolant leaks, engine overheating.
This is a non-OEM product, accessory only!

Specification:
Type: Coolant Radiator Reservoir Tank
Part Number: 17137567462
Size: 29x26.6x15.7cm / 11.42"x10.47"x6.18"(L*W*H)

Fitment:
for BMW 128i 2008-2013 3.0L L6 - Gas
for BMW 135i 2008-2011 3.0L L6 - Gas
for BMW 328i 2007-2013 3.0L L6 - Gas
for BMW 328i xDrive 2009-2013 3.0L L6 - Gas
for BMW 335i 2007-2010 3.0L L6 - Gas
for BMW 335i xDrive 2009-2013 3.0L L6 - Gas
for BMW 335is 2011-2013 3.0L L6 - Gas
for BMW M3 2008-2013 4.0L V8 - Gas
for BMW X1 2014-2015 2.0L L4 - Gas, 3.0L L6 - Gas
for BMW Z4 2009-2016 3.0L L6 - Gas


How to Replace:
Turn off your car and allow your engine to cool down completely.
Remove the bolts and the reservoir.
Wrap a cloth around the hose before disconnecting it and allow the remaining coolant to flow back into the drain pan.
Take out the damaged reservoir and drain the coolant off.
Reinstall the coolant hose to the radiator and tighten the clamp.
Connect the other end of the coolant hose to the new coolant reservoir and tighten the mounting bolts.
Refill the tank with a new coolant and run the engine to check if functions well.

Package Included:
1 x Coolant Radiator Reservoir Tank