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 : afe46-34014 Description : Silver Bullet Throttle Body Spacer; Billet Aluminum; Serrated/Helix Combination; +4 HP/+4 Lbs. x Ft. Torque; Use w/Intake System PN[51-74107/54-74107]; 2015-2016 Chevrolet Colorado Base L4.2457cc Air Intake Systems::Throttle Body Spacers 2015-2016 Chevrolet Colorado LT L4.2457cc Air Intake Systems::Throttle Body Spacers 2015-2016 Chevrolet Colorado WT L4.2457cc Air Intake Systems::Throttle Body Spacers 2015-2016 Chevrolet Colorado Z71 L4.2457cc Air Intake Systems::Throttle Body Spacers 2015-2016 GMC Canyon Base L4.2457cc Air Intake Systems::Throttle Body Spacers 2015-2016 GMC Canyon SL L4.2457cc Air Intake Systems::Throttle Body Spacers 2015-2016 GMC Canyon SLE L4.2457cc Air Intake Systems::Throttle Body Spacers 2015 GMC Canyon SLT L4.2457cc Air Intake Systems::Throttle Body Spacers