BMW B58 / S58 Billet Engine Fluid Cap Set ActiveHybrid (F10) Compatibility

Compatibility

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

Transform your 2015+ Subaru STI with the MST Cold Air Intake System to experience enhanced horsepower

engine knock

Not only are they restrictive

BMW B58 / S58 Billet Engine Fluid Cap Set ActiveHybrid (F10) CompatibilityBundle 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.