aFe Silver Bullet Throttle Body Spacer Kit

Multiple Fitments for BMW (46-31002)

Part #: 46-31002

Overview

The aFe Silver Bullet Throttle Body Spacer Kit is designed to enhance the performance and efficiency of your BMW engine. Crafted from durable T-6061 billet aluminum, this spacer is engineered to create turbulence in the incoming air flow just before it enters the intake manifold. By optimizing airflow dynamics, it helps support increased horsepower, torque, throttle response, and fuel efficiency. Whether you're a daily driver looking for improved drivability or a performance enthusiast seeking subtle gains, this spacer offers a straightforward upgrade to your vehicle's intake system.

Designed for multiple BMW models, the Silver Bullet Spacer is a reliable choice for those aiming to maximize engine response without extensive modifications. Its unique serrated and helix entry design reduces airflow restrictions and promotes better mixing of air and fuel, resulting in improved combustion efficiency. This product is ideal for enthusiasts who want to extract more performance from their BMW while maintaining a smooth and responsive throttle feel.

Key Features

The Silver Bullet Throttle Body Spacer features advanced engineering and high-quality materials to deliver consistent performance benefits. Key features include:

• Constructed from durable T-6061 billet aluminum for strength and longevity, ensuring it withstands the rigors of daily driving and spirited performance.
• Unique serrated and helix entry design creates turbulence at the intake manifold, promoting better air mixing and flow efficiency.
• Helps increase horsepower and torque by improving airflow dynamics, supporting more efficient combustion.
• Enhances throttle response, providing a more immediate and responsive driving experience.
• Reduces intake whistle noise common with other helix-only throttle spacers, resulting in a quieter operation.
• Easy bolt-on installation that requires no cutting or complex modifications, making it suitable for DIY enthusiasts and professional installers alike.
• Compatible with a wide range of BMW models, providing versatile fitment options.

Construction & Design

The aFe Silver Bullet Throttle Body Spacer is meticulously machined from high-grade T-6061 billet aluminum, ensuring precise fitment and durability. Its serrated and helix entry design is crafted through advanced CNC machining processes, which creates turbulence in the airflow to improve mixing and flow efficiency. This turbulence helps to increase the volumetric efficiency of the engine, supporting better power delivery and responsiveness.

The spacer's design minimizes the common whistle noise associated with helix-style spacers by incorporating a serrated entry that disrupts the formation of high-frequency sound waves. Its lightweight construction adds no significant weight to the engine bay, and its corrosion-resistant finish ensures long-lasting performance even under harsh conditions.

Performance & Sound

While specific horsepower and torque gains can vary depending on the vehicle and other modifications, users typically experience noticeable improvements in throttle response and overall engine efficiency. The turbulence created by the spacer promotes better air-fuel mixing, which can lead to smoother acceleration and a more responsive feel. Additionally, the design helps reduce intake noise, providing a quieter operation compared to other helix-style spacers.

Installation & Fitment

The aFe Silver Bullet Throttle Body Spacer Kit is designed for easy installation with a bolt-on process that requires no cutting, drilling, or tuning. It mounts directly onto the throttle body using the factory mounting points, making it a straightforward upgrade for most BMW models within the compatible fitment list. Basic hand tools are sufficient for installation, and detailed instructions are included to guide you through the process. No additional modifications are necessary, allowing you to enjoy the benefits quickly and hassle-free.

What's Included

• Silver Bullet Throttle Body Spacer
• All necessary mounting hardware and gaskets
• Installation instructions

Ideal For

• BMW owners seeking to improve throttle response and engine efficiency
• Performance enthusiasts looking for subtle power gains without extensive modifications
• Daily drivers wanting better fuel economy and drivability
• DIY installers and professional mechanics seeking a reliable, bolt-on upgrade

Emissions Note

This product is designed for off-road or racing use only and may not be legal for use on pollution-controlled vehicles in all areas. Please check local regulations before installation.