Mishimoto Aluminium Expansion Tank for BMW E36This Mishimoto expansion tank is a great way to improve both performance and aesthetics. Made from aluminium and featuring an uprated 1.3 BAR cap it raises the boiling point of your engine coolant to provide more efficient cooling.It has a dipstick for accurate coolant measurement. All required mounting brackets hardware and hosing are supplied this kit is a direct fit with no modification required.