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 : afe46-37001 Description : Silver Bullet Throttle Body Spacer 2013 Acura ILX Base L4.2354cc Air Intake Systems::Throttle Body Spacers 2009-2013 Acura TSX Base L4.2354cc Air Intake Systems::Throttle Body Spacers 2013 Acura TSX Special Edition L4.2354cc Air Intake Systems::Throttle Body Spacers 2008-2012 Honda Accord EX L4.2354cc Air Intake Systems::Throttle Body Spacers 2013 Honda Accord EX L4.2356cc Air Intake Systems::Throttle Body Spacers 2008-2012 Honda Accord EX-L L4.2354cc Air Intake Systems::Throttle Body Spacers 2013 Honda Accord EX-L L4.2356cc Air Intake Systems::Throttle Body Spacers 2008-2012 Honda Accord LX L4.2354cc Air Intake Systems::Throttle Body Spacers 2013 Honda Accord LX L4.2356cc Air Intake Systems::Throttle Body Spacers 2008-2012 Honda Accord LX-P L4.2354cc Air Intake Systems::Throttle Body Spacers 2008-2012 Honda Accord LX-S L4.2354cc Air Intake Systems::Throttle Body Spacers 2013 Honda Accord LX-S L4.2356cc Air Intake Systems::Throttle Body Spacers 2011-2012 Honda Accord SE L4.2354cc Air Intake Systems::Throttle Body Spacers 2013 Honda Accord Sport L4.2356cc Air Intake Systems::Throttle Body Spacers 2012-2014 Honda Civic Si L4.2354cc Air Intake Systems::Throttle Body Spacers