The aFe Silver Bullet throttle body spacer bolts between the throttle body and intake manifold on BMW V8 models, using a serrated/helix entry to create air turbulence that improves throttle response and low-end torque. It is CNC-machined from 6061-T6 billet aluminum with a black anodized finish, and the serrated design eliminates the whistle common to helix-only spacers. Uses the factory mounting locations for a bolt-on install.
| Type | Serrated/helix throttle body spacer (aFe Silver Bullet) |
| Material | 6061-T6 billet aluminum |
| Finish | Black anodized |
| Part Number | 46-31006 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2005 | BMW | 545i | Base |
| 2006-2010 | BMW | 550i | Base |
| 2004-2005 | BMW | 645Ci | Base |
| 2006-2010 | BMW | 650i | Base |
| 2006-2008 | BMW | 750i | Base |
| 2006-2008 | BMW | 750Li | Base |
| 2001-2004 | BMW | X5 | 3.0i |
| 2000-2006 | BMW | X5 | 4.4i |
| 2004-2006 | BMW | X5 | 4.8is |
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