aFe Power MagnumFORCE Stage-1 Pro 5R Cold Air Intake System for 2003-2005 BMW Z4 (L6-2.5L) - 54-10651

Fits 2003-2005 BMW Z4 2.5i (L6-2.5L).

Enhance the performance and throttle response of your E85 chassis with the aFe Power MagnumFORCE Stage-1 cold air intake system. This system is engineered to replace the restrictive factory airbox, delivering a measured gain of 6 horsepower and 7 lb-ft of torque by optimizing airflow to the M54 engine.

The system centers around a massive 360-degree conical Pro 5R air filter. This washable and reusable filter uses five layers of progressively finer medical-grade cotton gauze media to provide maximum airflow—resulting in a 71% CFM gain over the stock intake. The filter is constructed with 100% polyurethane for a long service life even under high engine bay temperatures. To ensure the engine breathes the coolest air possible, the kit includes a durable 16-gauge powder-coated heat shield and a unique 3-angle adapter that increases air velocity into the MAF sensor tube.

• Performance Output: +6 HP and +7 lbs.-ft. torque
• Flow Gain: 71% increase over factory intake system
• Filter Media: Pro 5R 5-layer oiled cotton gauze (washable/reusable)
• Shielding: 16-gauge powder-coated heat shield
• Hardware: Includes 3-angle adapter and rotomolded intake tube components
• Warranty: 2-year limited warranty
• MPN: 54-10651

Installation is straightforward and requires no permanent modifications; the system mounts directly to the factory MAF sensor tube using the included hardware.