aFe 46-31009 aFe Silver Bullet Throttle Body Spacer 12-15 BMW 328i (F30) L4-2.0L N20/N26

Silver Bullet Throttle Body Spacer Kit BMW 220i/320i/328i/420i/428i (F2X/3X) 12-16 L4-2.0L (t) N20/N26Silver Bullet Throttle Body SpacerSilver 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.Features and Benefits: 2 Year Limited Warranty; Fits w/aFe Intakes; Increased Air Volume For Better Performance; No Annoying Whistle; Precision Machined From T-6061 Billet Aluminum; Produces Increased HP/Torque/Throttle Response; Special Helix Design