High-Performance 4-Inch Air Intake System for BMW E46 (1999–2006) – Ultimate Airflow & Sound

This high-performance intake system is engineered to maximize the BMW E46’s induction volume. Featuring a massive 4-inch intake design—the largest available for the platform—this kit allows the inline-six engine to draw in a larger volume of oxygen-rich air with significantly less effort. The result is a more energetic combustion cycle, providing crisper throttle sensitivity and more fluid acceleration, perfectly complementing the legendary balance and driver engagement of the E46 chassis.

Custom-engineered specifically for the 3-series platform, this upgrade unlocks hidden efficiency while maintaining the sophisticated drivability of your BMW. In addition to the performance boost, it grants your engine a deep, commanding induction note under load, while the black powder-coated heat shield ensures the engine bay looks clean and purpose-built.

Key Features & Performance Benefits

• Massive 4-Inch Induction: Utilizes the largest intake diameter available for the E46 to satisfy the engine’s maximum demand for air.

• Instant Throttle Feedback: Eliminates the "laggy" feeling of the stock intake for more immediate power delivery and stronger acceleration.

• VORTEX Filtration: Includes a high-flow 4-inch cone air filter designed for maximum airflow while maintaining superior engine protection.

• Integrated Heat Management: Features a black powder-coated heat shield specifically designed to fit the E46 chassis and block radiant engine heat.

• Aggressive Sound Profile: Delivers a deeper, more authoritative engine growl that lets you hear and feel the performance with every rev.

• Rapid Installation: Complete plug-and-play design that takes approximately 20 minutes to install with no modifications required.

Vehicle Fitment

1999–2006 BMW E46 3-Series

• Models: 320 / 323 / 325 / 328 / 330

• Fits both Coupe and Sedan variants.

Exclusions: This system is NOT compatible with E46 M3 models.

Product Specifications

• Intake Diameter: 4-Inch (Massive High-Velocity Design)

• System Type: Complete Plug-and-Play Induction

• Filter Type: VORTEX 4-Inch High-Flow Cone

• Heat Shield: Black Powder-Coated Steel (Model-Specific Variations)

• Installation: Direct bolt-on utilizing factory mounting points

What's included:

Your kit features the massive 4-inch induction path, a high-flow VORTEX cone air filter, a model-specific black powder-coated heat shield, and all required hardware to ensure a secure and precise fit.

Installation Tip

Disconnect the NEGATIVE GROUND CABLE from the battery before starting the installation and keep it off for at least one minute after you finish. This reset allows the engine's computer to learn the new airflow parameters. Ensure the engine is completely cool before beginning work.