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

Wake up your E46's inline-six with a bolt-on cold air intake built for improved throttle response and a deeper intake sound. Direct replacement for the factory airbox, no tuning required.

Reclaim the Driving Feel Your E46 Was Built to Deliver

The E46 3-Series earned its reputation through precise handling, balanced weight distribution, and a smooth-revving inline-six. The factory air intake, however, was designed for quiet compliance, not performance. This intake replaces the stock airbox with an open cone filter housed in a black molded airbox, giving your 325i or 328i a freer-breathing path for incoming air.

From the moment you press the throttle you'll notice improved throttle response and a more purposeful intake note under acceleration, restoring the connection between driver and machine that makes the E46 chassis so special.

Key Features at a Glance

• Black Molded Airbox: Shaped housing surrounds the filter and separates it from the engine bay, helping it draw cooler air.
• Red Cotton-Gauze Cone Filter: Large conical filter with a black end cap offers far more surface area than the factory panel element.
• Silicone Elbow Coupler: Black silicone elbow connects the filter to the intake path, with stainless hose clamps for a secure seal.
• Deeper Intake Sound: Replaces the muted factory intake sound with a fuller tone under acceleration.

How It's Used: Installation & Fitment

This is a bolt-on system. No cutting, welding, or custom fabrication is required, and it can be installed with basic hand tools. Remove the factory airbox, mount the new airbox and filter, connect the silicone coupler with the supplied clamps, and you're done.

Product Durability & Material Details

The airbox is molded in a black finish to suit the engine bay. The silicone elbow coupler is built to handle heat cycling and engine movement, and is secured with stainless steel worm-gear clamps. The red cotton-gauze filter element is housed in a cone with a black end cap.

Your Benefits at a Glance

• Instant Driving Enjoyment: Improved throttle response for a more engaging drive.
• Performance You Can Hear: A fuller intake sound under acceleration without being intrusive at cruising speeds.
• Clean Engine Bay Look: Black airbox and coupler with a red filter replace the dated factory plastic airbox.
• Simple Bolt-On Install: No permanent modifications to your vehicle.

Estimated gains; results vary by vehicle, engine, modifications, and conditions.

Extra Info & Specifications

Fitment:

• BMW E46 325i / 325ci (2.5L): 1999–2006
• BMW E46 328i / 328ci (2.8L): 1999–2006
• Note: Does not fit 330i models

Product Specifications:

• Airbox: Black Molded
• Coupler: Black Silicone Elbow
• Filter Type: Red Cotton-Gauze Cone
• Installation: Bolt-On

Package Includes:

• Black Molded Airbox
• Red Cotton-Gauze Cone Filter
• Black Silicone Elbow Coupler
• Two Stainless Steel Hose Clamps
• Mounting Hardware