Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.

This Part Fits:

Year	Make	Model	Submodel
2009	BMW	528i	Base
2009	BMW	528i xDrive	Base
2009	BMW	535i	Base
2009	BMW	535i xDrive	Base
1997-2003	BMW	540i	Base
2004-2005	BMW	545i	Base
2006-2009	BMW	550i	Base
2004-2005	BMW	645Ci	Base
2006-2009	BMW	650i	Base
2002-2005	BMW	745i	Base
2002-2005	BMW	745Li	Base
2000-2006	BMW	X5	4.4i
2002-2003	BMW	X5	4.6is
2004-2006	BMW	X5	4.8is