Precision Raceworks Billet Engine Fluid Cap Set | G20 M340i · G80 M3 · M3 Competition · G22 · G23 · G26 M440i · G82 · G83 M4 · M4 Competition Color:Blue The factory airbox and turbo

The factory airbox and turbo inlet are adequate enough for stock power output

much heavier weight

The APR Open PEX Intake System is the best dollar-per-horsepower intake system for the 1

High Flow Filter

Precision Raceworks Billet Engine Fluid Cap Set | G20 M340i · G80 M3 · M3 Competition · G22 · G23 · G26 M440i · G82 · G83 M4 · M4 Competition Color:Blue The factory airbox and turboBundle 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.