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 : afe46-33004 Description : Silver Bullet Throttle Body Spacer 1991-2000 Ford Explorer Eddie Bauer V6.-cc Air Intake Systems::Throttle Body Spacers 1995 Ford Explorer Expedition V6.-cc Air Intake Systems::Throttle Body Spacers 1993-2000 Ford Explorer Limited V6.-cc Air Intake Systems::Throttle Body Spacers 2000 Ford Explorer Postal V6.-cc Air Intake Systems::Throttle Body Spacers 1991-2000 Ford Explorer Sport V6.-cc Air Intake Systems::Throttle Body Spacers 1991-1999 Ford Explorer XL V6.-cc Air Intake Systems::Throttle Body Spacers 2000 Ford Explorer XL Fleet V6.-cc Air Intake Systems::Throttle Body Spacers 1999-2000 Ford Explorer XLS V6.-cc Air Intake Systems::Throttle Body Spacers 1991-2000 Ford Explorer XLT V6.-cc Air Intake Systems::Throttle Body Spacers 1990-1992 Ford Ranger Custom V6.-cc Air Intake Systems::Throttle Body Spacers 2001 Ford Ranger Edge V6.-cc Air Intake Systems::Throttle Body Spacers 1990-1992 Ford Ranger S V6.-cc Air Intake Systems::Throttle Body Spacers 1990 Ford Ranger S Plus V6.-cc Air Intake Systems::Throttle Body Spacers 1993-1998 Ford Ranger Splash V6.-cc Air Intake Systems::Throttle Body Spacers 1991-1993 Ford Ranger Sport V6.-cc Air Intake Systems::Throttle Body Spacers 1997 Ford Ranger Sport V6.-cc Air Intake Systems::Throttle Body Spacers 1990-1997 Ford Ranger STX V6.-cc Air Intake Systems::Throttle Body Spacers 1993-2001 Ford Ranger XL V6.-cc Air Intake Systems::Throttle Body Spacers 1995 Ford Ranger XL Sport V6.-cc Air Intake Systems::Throttle Body Spacers 1990-2001 Ford Ranger XLT V6.-cc Air Intake Systems::Throttle Body Spacers