Cold Air Intake for BMW E46 325i 325ci 325xi 328i 328ci (1999-2006) 2.3L 2.5L 2.8L Engines

Performance Cold Air Intake System with Heat Shield for BMW E46 3-Series (1999–2006)

Experience the full potential of the legendary E46 chassis with this precision-engineered cold air intake system. Designed for the 323i, 325i, and 328i models, this upgrade replaces the restrictive factory air box to provide your Inline-6 engine with the unrestricted, cool air it needs to perform at its peak. Whether you are navigating a winding backroad or enjoying a spirited highway drive, this system delivers sharper throttle response and smoother power delivery across the entire RPM range.

The E46 is celebrated for its balanced handling and iconic engine note, and this intake is built to enhance both. By drawing in cooler, denser air from outside the engine compartment, the system supports more efficient combustion, resulting in a noticeable increase in horsepower and torque. Under acceleration, it transforms the muted factory intake sound into a deeper, more aggressive growl that highlights the sophisticated mechanical character of the 3.0L platform.

A high-quality black powder-coated heat shield is the cornerstone of this kit, serving as a vital thermal barrier. It effectively deflects radiant engine heat away from the air filter, preventing "heat soak" and ensuring that only the highest density air enters the 3-inch silicone inlet hose. This reinforced hose features an integrated CNC-machined pipe for maximum durability and a smooth internal surface that promotes laminar airflow directly into the engine.

Beyond performance, this system significantly upgrades the aesthetics of your engine bay. The sleek, powder-coated finish and industrial-grade silicone components provide a modern, performance-oriented look that replaces dated factory plastics. The included high-flow air filter is designed for maximum surface area, providing exceptional filtration and increased air volume for long-term engine health.

Designed as a complete bolt-on solution, this kit utilizes the stock air inlet duct for a factory-perfect fit without the need for electronic tuning or permanent modifications. Installation is straightforward and can be completed in about an hour using common hand tools, making it one of the most effective and accessible upgrades for the E46 enthusiast.

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Vehicle Fitment

BMW 323i / 323ci: 1999–2006

BMW 325i / 325ci / 325xi: 1999–2006

BMW 328i / 328ci: 1999–2006

Note: Does not fit 330i models

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Product Specifications

Intake Hose Diameter: 3" Reinforced Silicone

Pipe Material: Integrated CNC Aluminum

Heat Shield Finish: Black Powder-Coated

Filter Type: High-Flow Washable Synthetic

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Key Benefits

Increased horsepower and torque through cooler air induction

Noticeably sharper throttle response and acceleration

Deep, resonance-rich engine note under load

Effective heat insulation prevents performance-robbing heat soak

Direct bolt-on fitment with no tuning required

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If you are looking to revitalize the responsiveness and sound of your E46, this cold air intake system offers the perfect blend of performance and reliability. Experience a more engaging drive and a cleaner, modernized engine bay with this essential performance upgrade.