BMW B58 / S58 Billet Engine Fluid Cap Set ActiveHybrid (F10) or any aftermarket turbo inlet

or any aftermarket turbo inlet

Compatibility

Enhanced Sound: Enjoy a more exciting driving experience with better throttle response and a sportier engine sound

No expenses were spared with this extremely versatile product

engine knock

BMW B58 / S58 Billet Engine Fluid Cap Set ActiveHybrid (F10) or any aftermarket turbo inletBundle and SAVE! Choose your color combo to dress up your engine bay! The Precision Raceworks Billet Engine Cap Set is a functional and stunningly stylish way to add a nice touch to any engine bay! These caps 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.