Dominate the Road.

BMW E46 330i 330Ci 328i 325i 323i Long-Tube Cold Air Intake

Built for speed. Engineered for power. Made from race-grade ASA.

Why This Intake Crushes the Competition

• 4" to 3.5" Tapered Design: 4" inlet for maximum airflow, stepping down to a 3.5" MAF-matched outlet — no retuning required.
• Curved Internal Inlet: Smooth internal radius reduces turbulent flow and pressure losses compared to sharp-angle inlets.
• Fluid-Smooth Channel: Eliminates turbulence — every cubic inch of air hits the throttle body at full force.
• Cold-Air Advantage: Cooler, denser air for harder pulls and repeatable performance.
• ASA Material: Race-tough, heat-proof, and UV resistant — won't warp under hood temps.

Install Notes

• Direct bolt-on for E46 6-cylinder models (M52, M52TU, M54). Some minor modifications to the headlight assembly may be required for perfect fitment on some early model cars.
• 323i/323Ci, 325i/325Ci, and 328i/328Ci models include a reducer adapter to match the intake to your factory throttle body diameter — no separate SKU needed.
• 330i/330Ci models connect directly with no adapter required.
• Allow 3–4 business days for your kit to be printed, inspected, and shipped.
• Aftermarket performance part — install at your own risk.

Using Your Own Air Filter?

If you select the "I have my own air filter" option, your filter must have a 4" inlet and a compact form factor to ensure proper fitment in the engine bay. We recommend the K&N RU2510 — the same filter included standard with this kit — for guaranteed fit. Filters with larger housings or non-standard shapes may not clear surrounding components.

Have questions about compatibility or install? Message us with your model, year, and engine code and we'll confirm this kit fits your build before you order.