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. PartNumber : afe46-33009 Description : Silver Bullet Throttle Body Spacer 2005 Ford Explorer Sport Trac Adrenalin V6.-cc Air Intake Systems::Throttle Body Spacers 2001 Ford Explorer Sport Trac Base V6.-cc Air Intake Systems::Throttle Body Spacers 2007-2009 Ford Explorer Sport Trac Limited V6.-cc Air Intake Systems::Throttle Body Spacers 2002 Ford Explorer Sport Trac XL V6.-cc Air Intake Systems::Throttle Body Spacers 2003-2005 Ford Explorer Sport Trac XLS V6.-cc Air Intake Systems::Throttle Body Spacers 2003-2005 Ford Explorer Sport Trac XLT V6.-cc Air Intake Systems::Throttle Body Spacers 2007-2009 Ford Explorer Sport Trac XLT V6.-cc Air Intake Systems::Throttle Body Spacers 2001-2005 Ford Ranger Edge V6.-cc Air Intake Systems::Throttle Body Spacers 2005-2009 Ford Ranger FX4 V6.-cc Air Intake Systems::Throttle Body Spacers 2006-2009 Ford Ranger Sport V6.-cc Air Intake Systems::Throttle Body Spacers 2006-2007 Ford Ranger STX V6.-cc Air Intake Systems::Throttle Body Spacers 2004 Ford Ranger Tremor V6.-cc Air Intake Systems::Throttle Body Spacers 2001-2003 Ford Ranger XL V6.-cc Air Intake Systems::Throttle Body Spacers 2005-2009 Ford Ranger XL V6.-cc Air Intake Systems::Throttle Body Spacers 2001-2009 Ford Ranger XLT V6.-cc Air Intake Systems::Throttle Body Spacers