The aFe Silver Bullet throttle body spacer installs between the throttle body and intake manifold on the 3.5L and 3.7L inline-5 Colorado, Canyon, Hummer H3 and Isuzu i-series, lengthening the intake track and using a serrated/helix entry to create turbulence that sharpens throttle response and performance. It is precision-machined from 6061-T6 billet aluminum with a black anodized finish, and the serrated design reduces the whistle found in helix-only spacers (US Pat. 07055513). It uses all factory mounting locations and includes a gasket for a proper seal.
Specifications
| Type | Serrated/helix throttle body spacer (aFe Silver Bullet) |
| Material | 6061-T6 billet aluminum |
| Finish | Black anodized |
| Included | Gasket |
| Part Number | 46-34018 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004 | Chevrolet | Colorado | Base |
| 2004,2007-2008 | Chevrolet | Colorado | LS |
| 2006-2012 | Chevrolet | Colorado | LT |
| 2004-2005 | Chevrolet | Colorado | Sport |
| 2004-2005 | Chevrolet | Colorado | Sport LS |
| 2006-2012 | Chevrolet | Colorado | WT |
| 2004-2005 | Chevrolet | Colorado | Z71 |
| 2004-2005 | Chevrolet | Colorado | Z71 LS |
| 2004-2005 | Chevrolet | Colorado | Z85 |
| 2004-2005 | Chevrolet | Colorado | Z85 LS |
| 2004 | GMC | Canyon | SL |
| 2004,2006-2012 | GMC | Canyon | SLE |
| 2006-2012 | GMC | Canyon | SLT |
| 2006-2012 | GMC | Canyon | WT |
| 2004-2005 | GMC | Canyon | Z71 Fleet |
| 2004-2005 | GMC | Canyon | Z71 SL |
| 2004-2005 | GMC | Canyon | Z71 SLE |
| 2004-2005 | GMC | Canyon | Z85 SL |
| 2004-2005 | GMC | Canyon | Z85 SLE |
| 2008 | Hummer | H3 | Adventure |
| 2006-2008 | Hummer | H3 | Base |
| 2008 | Hummer | H3 | Luxury |
| 2007-2008 | Hummer | H3 | X |
| 2006 | Isuzu | i-350 | Base |
| 2007-2008 | Isuzu | i-370 | LS |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
