The aFe Silver Bullet throttle body spacer fits between the throttle body and intake manifold on N54 twin-turbo BMWs, including the 135i, 335i and 535i. Its serrated/helix entry creates turbulence at the manifold to improve throttle response and low-end torque, without the whistle common to helix-only spacers. It is precision machined from durable T-6061 billet aluminum and works with aFe intakes.
| Type | Throttle body spacer (Silver Bullet) |
| Material | T-6061 billet aluminum |
| Fitment | BMW 135i, 335i, 335xi, 535i (N54, L6-3.0L) |
| Part Number | 46-31002 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2010 | BMW | 135i | Base |
| 2007-2010 | BMW | 335i | Base |
| 2009-2010 | BMW | 335i xDrive | Base |
| 2007-2008 | BMW | 335xi | Base |
| 2008-2010 | BMW | 535i | Base |
| 2009-2010 | BMW | 535i xDrive | Base |
| 2008 | BMW | 535xi | Base |
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