aFe POWER 46-31007 Silver Bullet Throttle Body Spacer


Silver Bullet throttle body spacers create turbulence in the air flow just prior to entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable 6061-T6 billet aluminum and use a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix-only throttle spacers.

Serrated/Helix Design: The Serrated/Helix combination design creates intake turbulence in the combustion chamber. This turbulence breaks up the fuel which creates a more complete combustion cycle increasing horsepower, torque and improving throttle response. The Serrated/Helix combination design also reduces intake whistle that occurs with helix-only designs.

6061-T6 Billet Aluminum Construction: All Silver Bullet Throttle Body Spacers are constructed from 6061-T6 billet aluminum precision machined for light weight, high strength and perfect fit and finish.

Longer Intake Track: Adding a Silver Bullet Throttle Body spacer lengthens the intake track which helps increase intake air speed, performance and improve throttle response.
In recent testing this spacer produced 6 Horsepower and 13 lbs. x ft. of torque. This spacer was dynoed with a aFe OER air filter and dynamic air scoop.

This throttle body spacer is 50-state legal (CARB E.O Number D-550-11/D-550-17).


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2012-2014BMW335ixF30 Turbo N55L6 3.0LGas
2013-2014BMW335ixF31/F34 Turbo N55L6 3.0LGas
2015-2015BMW335ix(F30) N55 (t)L6 3.0LGas
2015-2015BMW335ix(F31/34) N55 (t)L6 3.0LGas
2014-2014BMW435iF32/F33 Turbo N55L6 3.0LGas
2014-2014BMW435iF3x TurboL6 3.0LGas
2015-2015BMW435i(F32/33/36) N55 (t)L6 3.0LGas
2016-2016BMW435i(F32/33/36) N55 (turbo)L6 3.0LGas
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2015-2015BMW435ix(F32/33/36) N55 (t)L6 3.0LGas
2016-2016BMW435ix(F32/33/36) N55 (turbo)L6 3.0LGas
2012-2014BMWM135iF20/F21 Turbo N55L6 3.0LGas
2015-2015BMWM135i(F20/21) N55 (t)L6 3.0LGas
2016-2016BMWM135i(F20/21) N55 (turbo)L6 3.0LGas
2012-2014BMWM135ixF20/F21 Turbo N55L6 3.0LGas
2015-2015BMWM135ix(F20/21) N55 (t)L6 3.0LGas
2016-2016BMWM135ix(F20/21) N55 (turbo)L6 3.0LGas
2014-2014BMWM235iF22 Turbo N55L6 3.0LGas
2015-2015BMWM235i(F22) N55 (t)L6 3.0LGas
2016-2016BMWM235i(F22) N55 (turbo)L6 3.0LGas
2013-2014BMWX1 35ixE84 Turbo N55L6 3.0LGas
2015-2015BMWX1 35ix(E84) N55 (t)L6 3.0LGas
SKU: 08998cb43786 Category:


Additional information

Weight2 lbs
Dimensions7 × 2 × 10 in
Key Features

Dyno testing resulted in max gains up to +6 HP and +13 lbs. x ft. of torque

Billet Aluminum 6061-T6 Construction

Serrated/Helix Combination TBS Design for optimum airflow into the combustion chamber, precision machined from 6061-T6 aluminum

Installation is a Snap