BMW Auxiliary Coolant Reservoir Cap s55tuning Compatible with the following BMW

Compatible with the following BMW models:

BMW 135i (2008 to 2013)

for a full plug and play upgrade

The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune

BMW Auxiliary Coolant Reservoir Cap s55tuning Compatible with the following BMWThe Precision Raceworks Auxiliary Coolant Reservoir Cap is a functional and stunningly stylish way to add a nice touch to any engine bay! This cap come in three color options so there is always a color that will work for you! Black with Billet, Black with Blue, and the Stealth series (all black). Many people don't realize it but the OEM caps have a pressure release valve built into them. Often times aftermarket companies don't know this either or just