aFe Silver Bullet Throttle Body Spacers TBS Ford F-150 97-10 V8-4.6 97-03 V8-5.4L

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.
Silver Bullet Throttle Body Spacer Kit Ford F-150 97-10 V8-4.6L/ 97-03 V8-5.4L
Ford F-150 97-10 V8-4.6L/97-03 V8-5.4L

Fits
Ford Excursion Eddie Bauer 2003 to 2005
Ford Excursion Limited 2000 to 2005
Ford Excursion XLS 2004 to 2005
Ford Excursion XLT 2000 to 2005
Ford Expedition Eddie Bauer 1997 to 2006
Ford Expedition King Ranch 2006
Ford Expedition Limited 2005 to 2006
Ford Expedition NBX 2004
Ford Expedition XLS 2004 to 2006
Ford Expedition XLT 1997 to 2006
Ford Expedition XLT Sport 2004
Ford Expedition XLT Sport 2006
Ford F-150 Base 1997 to 2000
Ford F-150 FX2 2008
Ford F-150 FX2 2010
Ford F-150 Harley-Davidson Edition 2000 to 2003
Ford F-150 King Ranch 2001 to 2003
Ford F-150 Lariat 1997 to 2003
Ford F-150 Lightning 1999 to 2003
Ford F-150 STX 2004 to 2010
Ford F-150 THE 60TH ANNIVERSARY EDITION 2008
Ford F-150 XL 1997 to 2010
Ford F-150 XLT 1997 to 2010
Ford F-150 Heritage XL 2004
Ford F-150 Heritage XLT 2004
Ford F-250 Super Duty King Ranch 2004
Ford F-250 Super Duty Lariat 1999 to 2004
Ford F-250 Super Duty XL 1999 to 2004
Ford F-250 Super Duty XLT 1999 to 2004
Ford F-350 Super Duty King Ranch 2003 to 2004
Ford F-350 Super Duty Lariat 1999 to 2004
Ford F-350 Super Duty XL 1999 to 2004
Ford F-350 Super Duty XLT 1999 to 2004
Lincoln Mark LT Base 2006 to 2008
Lincoln Navigator Base 1998 to 2001