BMW B58 / S58 Billet Engine Oil Cap a4 b9 And the more boost you

And the more boost you run the higher the performance gains

4L V8 Twin-Turbo powered 550i allows you to take your N63 engine to the next level

This upgrade relocates the filters behind the front grille

0L with the S&B JLT Cold Air Intake

BMW B58 / S58 Billet Engine Oil Cap a4 b9 And the more boost youThe Precision Raceworks Billet Engine Oil 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 don't