Performance Air Filter for Mercedes SLK 55 AMG R172 (2011-2016)

Optimizing the M152 V8: High-Flow Filtration for the Mercedes-Benz SLK 55 AMG (2 Required)

Who It’s For: Engineered for the Mercedes-Benz R172 SLK 55 AMG owner who understands that the M152 5.5L V8 is a masterpiece of naturally aspirated engineering that deserves better than restrictive, disposable paper filters.

The Symptom: The factory intake system on the SLK 55 AMG is designed to meet strict drive-by noise regulations and long-life service intervals. This means the OEM paper filters are dense and thick, creating a significant pressure drop across the intake tract. When you’re pushing that high-compression V8 toward its 7,000 RPM redline, the engine is fighting to pull air through a restrictive barrier, resulting in a delayed throttle response and a muted exhaust note that masks the true character of the hand-built AMG powerplant.

The Engineering Fix: BMC replaces the OEM paper media with a multi-layered cotton gauze saturated in low-viscosity oil. This creates a more sophisticated filtration matrix that captures impurities as small as 7 microns without the turbulence associated with thick paper pleats. By utilizing a "Full Moulding" system, the filter frame is created from a single cast with no welded joints, ensuring a perfect seal within the R172 airbox.

This maximizes the effective surface area, allowing for a higher volume of laminar airflow to reach the cylinders, which improves volumetric efficiency and sharpens the engine’s reaction to mid-range acceleration.

Why Mechanics Choose This Kit

• Enhanced Volumetric Efficiency: By reducing the intake restriction, the M152 V8 can achieve a better air-fuel mixture under load, capitalizing on its 422 HP potential.
• Superior Filtration Geometry: BMC filters trap particles down to 7 microns, outperforming the 10-micron standard of most OEM paper elements while simultaneously increasing flow.
• AMG-Grade Durability: The epoxy-coated alloy mesh protects the cotton media from gasoline fumes and oxidation, ensuring the filter doesn’t degrade under the high-heat conditions found in the R172 engine bay.

Technical Specifications

Compatibility & OEM Reference

Fits the following vehicles (BMC fitment data):

• Mercedes SLK (R172) AMG SLK 55 [2 Filters Required] (422 HP) | 2011-2016

BMC marks this application as [2 Filters Required]; this listing is one filter.

OEM Cross Reference (BMC): MERCEDES-BENZ A1520940004

The Performance Promise

Upgrade with confidence. These filters are pre-oiled and ready for immediate drop-in installation. Unlike disposable filters, these can be washed and regenerated using a BMC service kit, making them the last set of filters your R172 will ever need. Expect a crisper induction sound and a more responsive M152 powerband.

Common Questions

Do I need one or two filters?
BMC marks the SLK 55 AMG as [2 Filters Required]. This listing is one filter, so order two.

Is it a direct fit?
Yes. It replaces the factory element in the stock airbox with no modifications.

Can I clean and reuse it?
Yes. Wash and re-oil it with a BMC regeneration kit.

How fine is the filtration?
The multi-layer oiled cotton traps particles down to 7 microns.

What will I notice after installing it?
Sharper throttle response and a stronger intake sound.