46-31011 | aFe Power Silver Bullet Throttle Body Spacer (2007-2013 328i L6-3.0L N52)

• Silver Bullet throttle body spacers create turbulence in the air flow at the point just before entry to the engine – increasing performance, as well as improving throttle response.
• Dyno-Proven Gains up to +4 HP & +7 Lbs. x Ft. TQ w/ Throttle Body Spacer and aFe POWER P5R Air Filter (30-10131)
• Dyno-Proven Gains up to +3 HP & +5 Lbs. x Ft. TQ w/ Throttle Body Spacer and Factory Air Filter
• CNC-Machined from Durable 6061-T6 Billet Aluminum
• Unique Serrated/Helix Entry Design Creates Turbulence and Reduces Whistle Sounds
• Increases Air Speed, Improving Performance and Throttle Response
• Black Anodized Finish for a Stealthy Look
• Fits w/ aFe POWER Intakes P/N: 51/54-81012-B/C and 54-13053R/D

Serrated/Helix Design:
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 Tract:
Adding a Silver Bullet Throttle Body spacer lengthens the intake tract which helps increasing intake air speed increasing performance and improved throttle response.

Installation Is A Snap:
This Silver Bullet throttle body spacer uses all factory mounting locations providing stability and a hassle-free installation.