Performance Air Filter for BMW X1/ 1 Series (2006-2012)

Unleash Your BMW’s Potential: BMC High-Flow Performance Filter for N47 & N57 Engines

Who It’s For: Engineered for BMW E81, E82, E87, E88, E90, and E84 owners running the N47 (2.0L) and N57/M57 (3.0L) turbo-diesel powerplants who are tired of the stock sluggishness and throttle lag.

The Symptom: The factory intake on the BMW diesel range is designed for silence and cost-efficiency, utilizing a dense, restrictive paper filter. This creates a significant bottleneck in the fluid dynamics of the intake tract, causing a "choked" feeling when the turbocharger attempts to spool. In heavier chassis like the E84 X1 or the E91 Touring, this restriction manifests as a delayed throttle response and a lack of urgency when trying to merge into high-speed traffic, as the engine struggles to draw in the air volume required for peak combustion efficiency.

The Engineering Fix: This BMC performance system replaces the porous paper with a multi-layered cotton gauze soaked in low-viscosity oil. By utilizing a "Full Moulding" process, the filter is constructed from a single mould with no welded joints, ensuring a perfect seal within the factory airbox. This design increases the air velocity and density entering the cylinders while filtering out impurities as small as 7 microns—surpassing the OEM 10-micron standard. The result is a more immediate "snap" in throttle response and a smoother power delivery throughout the RPM range.

Why Mechanics Choose This Kit

• Optimized Oxygen Density: By reducing the intake vacuum drag, the N47 and N57 turbochargers can reach target boost pressures more quickly, increasing low-end torque.
• Superior Filtration: Captures particles down to 7 microns, providing better protection for the sensitive Mass Air Flow (MAF) sensor and internal engine components than standard paper filters.
• Lifetime Durability: Unlike disposable OEM filters, this unit is washable and regenerable, meaning it’s the last filter you’ll ever need to buy for your BMW.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• BMW 1 Series (E81, E82, E87, E88) 116 D (115 HP) 2009 > 2012
• BMW 1 Series (E81, E82, E87, E88) 118 D (136 HP) 2009 >
• BMW 1 Series (E81, E82, E87, E88) 118 D (143 HP) 2007 > 2012
• BMW 1 Series (E81, E82, E87, E88) 120 D (177 HP) 2007 > 2012
• BMW 1 Series (E81, E82, E87, E88) 123 D (204 HP) 2007 > 2012
• BMW 3 Series (E90, E91, E92, E93) 316 D (116 HP) 2009 >
• BMW 3 Series (E90, E91, E92, E93) 318 D (143 HP) 2007 >
• BMW 3 Series (E90, E91, E92, E93) 320 D (163 HP) 2007 >
• BMW 3 Series (E90, E91, E92, E93) 320 D (177 HP) 2007 > 2010
• BMW 3 Series (E90, E91, E92, E93) 320 D (184 HP) 2010 >
• BMW 3 Series (E90, E91, E92, E93) 325 D (204 HP) 2010 >
• BMW 3 Series (E90, E91, E92, E93) 330 D (245 HP) 2008 >
• BMW 3 Series (E90, E91, E92, E93) 335 D (286 HP) 2006 >
• BMW X1 (E84) 16 D (116 HP) 2012 >
• BMW X1 (E84) 18 D / DX (143 HP) 2009 >
• BMW X1 (E84) 20 D / DX (163 HP) 2010 >
• BMW X1 (E84) 20 D / DX (177 HP) 2009 > 2012
• BMW X1 (E84) 20 D / DX (184 HP) 2012 >
• BMW X1 (E84) 23 DX (204 HP) 2009 >
• BMW X1 (E84) 25 DX (218 HP) 2012 >

Interchange Part Numbers:

FB479/20, FB479-20

The Performance Promise

Buy with confidence. As your Lead Tuner, I only recommend parts that balance filtration integrity with genuine flow gains. Backed by real automotive experts and fast shipping.