The aFe Silver Bullet throttle body spacer bolts between the throttle body and intake manifold, where its serrated helix entry creates turbulence in the incoming charge for improved throttle response, added low-end torque and better fuel economy. It is precision-machined from T-6061 billet aluminum and its serrated design eliminates the whistle common to helix-only spacers. Fits the N20 and N26 2.0L four-cylinder across the BMW 228i, 320i, 328i and 428i (F30/F32), and is compatible with aFe intake systems.
| Type | Silver Bullet throttle body spacer (helix design) |
| Material | T-6061 billet aluminum |
| Part Number | 46-31009 |
| Warranty | 2-year limited |
| Fitment | BMW 228i, 320i, 328i, 428i (F30/F32) N20/N26 2.0L, 2012-2018 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2014-2016 | BMW | 228i | Base |
| 2013-2018 | BMW | 320i | Base |
| 2013-2018 | BMW | 320i xDrive | Base |
| 2012-2016 | BMW | 328i | Base |
| 2014-2016 | BMW | 328i GT xDrive | Base |
| 2013-2016 | BMW | 328i xDrive | Base |
| 2014-2016 | BMW | 428i | Base |
| 2015-2016 | BMW | 428i Gran Coupe | Base |
| 2014-2016 | BMW | 428i xDrive | Base |
| 2015-2016 | BMW | 428i xDrive Gran Coupe | Base |
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Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
