# aFe Power 46-31001 Silver Bullet- Throttle Body Spacers for 2002-2009 Bmw 545I and More

### Performance Overview

Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers

### Key Features

-   Brand: aFe Power
-   Part number: 46-31001
-   Product type: Silver Bullet- Throttle Body Spacers
-   Designed for the compatible vehicle applications listed on this page

### Vehicle Fitment

-   2004 Bmw 545I, Note: Base; 4.4L
-   2005 Bmw 545I, Note: Base; 4.4L
-   2006 Bmw 550I, Note: Base; 4.8L
-   2007 Bmw 550I, Note: Base; 4.8L
-   2008 Bmw 550I, Note: Base; 4.8L
-   2009 Bmw 550I, Note: Base; 4.8L
-   2004 Bmw 645Ci, Note: Base; 4.4L
-   2005 Bmw 645Ci, Note: Base; 4.4L

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

**What part number is this?**  
The listed part number is 46-31001.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

-   Silver Bullet- Throttle Body Spacers for Bmw 545I
-   46-31001 fitment
-   aFe Power Silver Bullet- Throttle Body Spacers
-   2002 Bmw 545I Silver Bullet- Throttle Body Spacers

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2004

Bmw

545I

Base; 4.4L

2005

Bmw

545I

Base; 4.4L

2006

Bmw

550I

Base; 4.8L

2007

Bmw

550I

Base; 4.8L

2008

Bmw

550I

Base; 4.8L

2009

Bmw

550I

Base; 4.8L

2004

Bmw

645Ci

Base; 4.4L

2005

Bmw

645Ci

Base; 4.4L

2006

Bmw

650I

Base; 4.8L

2007

Bmw

650I

Base; 4.8L

2008

Bmw

650I

Base; 4.8L

2009

Bmw

650I

Base; 4.8L

2002

Bmw

745I

Base; 4.4L

2003

Bmw

745I

Base; 4.4L

2004

Bmw

745I

Base; 4.4L

2005

Bmw

745I

Base; 4.4L

2002

Bmw

745Li

Base; 4.4L

2003

Bmw

745Li

Base; 4.4L

2004

Bmw

745Li

Base; 4.4L

2005

Bmw

745Li

Base; 4.4L

2004

Bmw

X5

4.4I, 4.8Is; 4.4L, 4.8L

2005

Bmw

X5

4.4I, 4.8Is; 4.4L, 4.8L

2006

Bmw

X5

4.4I, 4.8Is; 4.4L, 4.8L

## Details

- **Price:** 220.57 CAD
- **Vendor:** aFe Power
- **Type:** Silver Bullet- Throttle Body Spacers
- **Tags:** 2002 Bmw 745I, 2002 Bmw 745Li, 2003 Bmw 745I, 2003 Bmw 745Li, 2004 Bmw 545I, 2004 Bmw 645Ci, 2004 Bmw 745I, 2004 Bmw 745Li, 2004 Bmw X5, 2005 Bmw 545I, 2005 Bmw 645Ci, 2005 Bmw 745I, 2005 Bmw 745Li, 2005 Bmw X5, 2006 Bmw 550I, 2006 Bmw 650I, 2006 Bmw X5, 2007 Bmw 550I, 2007 Bmw 650I, 2008 Bmw 550I, 2008 Bmw 650I, 2009 Bmw 550I, 2009 Bmw 650I, 46-31001, aFe Power, AFE-46-31001, Air Filter, Air Intake, Auto Parts, Automotive, Diesel Performance, Direct Replacement, Exhaust Performance, Performance Parts, Silver Bullet- Throttle Body Spacers, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 220.57 CAD | In stock |

## Images

- aFe Power 46-31001 Silver Bullet- Throttle Body Spacers

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/afe-bmw-545i-throttle-body-spacer-46-31001)
> Updated: 2026-07-16