aFe Silver Bullet Throttle Body Spacer (46-31011) enhances throttle response and airflow for 2007–2013 BMW 328i models with 3.0L N52 engines. Precision-machined from 6061-T6 billet aluminum, this spacer is designed to increase intake airspeed and combustion efficiency while maintaining a factory-like fit and finish. Its patented serrated/helix design (US PAT 07055513) creates air turbulence for better combustion, while also minimizing the intake whistle common with traditional helix-only spacers. By lengthening the intake tract, this spacer improves volumetric efficiency, resulting in more responsive performance. This spacer is compatible with several aFe Power intake systems and includes quality machined hardware for secure installation.
Key Features :
Increases intake airspeed for improved throttle response
Serrated/helix design enhances combustion and reduces intake whistle
Machined from lightweight 6061-T6 billet aluminum
Black anodized finish for durability and corrosion resistance
Direct-fit installation with high-quality mounting hardware included
Compatible with aFe intakes: 51-81012-B, 54-81012-B, 51-81012-C, 54-81012-C, 54-13053D, 54-13053R
Designed specifically for 2007–2013 BMW 328i with 3.0L N52 engines
1 to 2 Business Days
Express Shipping
from the Best Brands
30 Days Simple Policy
!