Performance Air Filter for Mercedes Benz C Class/E Class/ CLS/ GLK Blue Efficiency Bluetech Engines

Optimized Airflow for Mercedes-Benz OM 651 Blue Efficiency & BlueTec Engines

Who It’s For: Engineered for Mercedes-Benz owners running the highly efficient yet often restricted OM 651 diesel powerplant. If you’re driving a C-Class, E-Class, CLS, or GLK and feel that the mid-range torque is being held back by a choked-off intake, this is the precision upgrade your engine deserves.

The Symptom: The factory air filtration system on the Mercedes OM 651 engine is designed primarily for noise suppression and extended service intervals using thick, pleated paper. Over time, these paper filters become a bottleneck, increasing the pressure drop across the intake tract. This forced restriction makes your turbocharger work harder to pull air, resulting in a sluggish throttle response and a noticeable delay when you’re trying to merge into highway traffic or execute a pass.

The Engineering Fix: We replace that restrictive paper element with a BMC high-flow cylindrical filter, utilizing a multi-layered cotton gauze media soaked in low-viscosity oil. This design allows for a significantly higher volume of air to pass through while actually improving filtration—capturing impurities down to 7 microns compared to the 10-micron limit of factory paper. By reducing the vacuum strain on the turbo, we increase the air density entering the cylinders, leading to more efficient combustion and a sharper, more linear power delivery.

Why Mechanics Choose This Kit

• Enhanced Induction Efficiency: By smoothing out the airflow path, we allow the OM 651 to breathe more freely, which is critical for maintaining peak boost pressure in BlueTec systems.
• Full Moulding Construction: Unlike cheap aftermarket filters with glued seams, this unit uses a “Full Moulding” system. It’s a single-piece construction with no welded joints, ensuring it won’t crack or leak even under heavy turbo induction heat.
• Sustainable Performance: This isn’t a disposable part. The epoxy-coated alloy mesh protects against moisture and fuel fumes, and the entire unit can be washed and regenerated for the life of the vehicle.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• CLASS C (W204/C204/S204) C 180 CDI BLUE EFFICIENCY (120 HP) 2011-2014
• CLASS C (W204/C204/S204) C 200 CDI BLUE EFFICIENCY (136 HP) 2009-2014
• CLASS C (W204/C204/S204) C 220 CDI BLUE EFFICIENCY (170 HP) 2008-2014
• CLASS C (W204/C204/S204) C 250 CDI BLUE EFFICIENCY (204 HP) 2008-2014
• CLASS E (A207/C207) E 220 CDI BE / BLUETEC [EURO 5] (170 HP) 2010+
• CLASS E (A207/C207) E 250 CDI BE / BLUETEC [EURO 5] (204 HP) 2009+
• CLASS E (W212/S212) E 200 CDI BE / BLUETEC [EURO 5] (136 HP) 2009+
• CLASS E (W212/S212) E 220 CDI BE / BLUETEC [EURO 5] (170 HP) 2015+
• CLASS E (W212/S212) E 250 CDI BE / BLUETEC [EURO 5] (204 HP) 2009+
• CLASS E (W212/S212) E 300 CDI BLUETEC HYBRID (204 HP) 2011+
• CLS (C218) / CLS SHOOTING BRAKE (X218) CLS 250 CDI BLUE TEC (204 HP) 2011-06/2012
• GLK (X204) GLK 200 CDI BE (143 HP) 2010-2015
• GLK (X204) GLK 220 CDI BE / BLUETEC (170 HP) 2009-2015
• GLK (X204) GLK 250 CDI BE / BLUETEC [EURO 5] (204 HP) 2009-2015

Interchange Part Numbers:

FB656/04, A6510940004, 204.000, 204.001, 204.201, 204.200, 212098, 204901, 204.902, 204.984, 204.997, 204982, OM 651.913, OM 651.911, OM 651.925, OM 651.924, OM 651.916, OM 651.912

The Performance Promise

Buy with confidence. This filter is a direct-fit replacement for your factory airbox, maintaining OEM mounting points while providing professional-grade filtration and airflow. Backed by our commitment to performance engineering and rapid shipping to get your Mercedes back to its peak potential.