The Serrated/Helix combination design creates intake turbulence in the combustion chamber. This turbulence breaks up the fuel which creates a more complete combustion cycle increasing horsepower, torque and improving throttle response. The Serrated/Helix combination design also reduces intake whistle that occurs with Helix only designs.
6061-T6 Billet Aluminum Construction:
All Silver Bullet Throttle Body Spacers are constructed from 6061-T6 billet aluminum precision machined for light weight, high strength and perfect fit and finish.
Longer Intake Track:
Adding a Silver Bullet Throttle Body spacer lengthens the intake track which helps increasing intake air speed increasing performance and improved throttle response.
Does Not Fit 2004-2010 Ford F-150 V8-4.6L (3-Valve)
Year Make Model SubModel Engine Fuel 1999-2004 Ford Excursion V8 5.4L Gas 1997-2006 Ford Expedition V8 4.6L Gas 1997-2004 Ford Expedition V8 5.4L Gas 1997-2010 Ford F-150 V8 4.6L Gas 1997-2003 Ford F-150 V8 5.4L Gas 1999-2004 Ford F-250 Super Duty V8 5.4L Gas 1999-2004 Ford F-350 Super Duty V8 5.4L Gas 2006-2008 Lincoln Mark LT V8 5.4L Gas 1998-2001 Lincoln Navigator 16 Valve V8 5.4L Gas
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