Original MANN-FILTER Interior Filter FP 26 009 – FreciousPlus biofunctional pollen filter – For passenger cars
Filter type: Activated carbon filter with polyphenol Height [mm]: 32Length [mm]: 254Width [mm]: 235
Height [mm]: 156 - Inlet Ø [mm]: 8 - Outer diameter [mm]: 48 - Outlet Ø [mm]: 6
The Mann Filter C521 Air Filter is a premium filtration solution crafted to deliver superior protection and efficiency for modern diesel engines. Designed with advanced materials and precision engineering, this filter ensures that only the cleanest air reaches the combustion chamber, thereby enhancing power output, reducing fuel consumption, and extending engine life.
The C521 employs a multi-layered media system that captures particles as small as 0.5 µm. This high filtration efficiency minimizes the risk of engine wear caused by airborne contaminants while maintaining optimal airflow.
The internal geometry of the C521 is engineered to reduce pressure drop, allowing the engine to draw air with minimal resistance. This design translates into improved throttle response and lower idle fuel consumption.
By filtering out fine particulates, the C521 reduces wear on pistons, valves, and cylinder walls. Consistent protection leads to fewer maintenance intervals and a longer service life for critical engine components.
A cleaner air supply ensures more complete combustion, which can result in up to 2 % fuel savings under typical operating conditions. This efficiency gain is especially noticeable in heavy-duty applications where fuel costs dominate operational expenses.
The filter’s high filtration capability helps lower particulate matter (PM) emissions, aiding compliance with stringent environmental regulations such as Euro 6 and EPA Tier 4.
The Mann Filter C521 Air Filter is designed to fit a wide range of diesel engines across various vehicle categories. Its standardized dimensions (approx. 52 mm diameter) make it suitable for:
Engineers can verify exact fitment by cross-referencing the filter’s part number with OEM specifications for their specific model.
While the C521 is built for durability, regular inspection remains essential. Recommended practices include:
Operators of fleets equipped with the C521 report:
The Mann Filter C521 Air Filter stands out as a reliable, high‑performance component for diesel engines across diverse sectors. Its advanced filtration media, robust construction, and optimized airflow design collectively contribute to enhanced engine longevity, fuel efficiency, and compliance with environmental standards. For operators seeking a dependable solution that delivers measurable operational benefits, the C521 is an investment in both performance and durability.
MANN-FILTER is a German automotive parts company that produces filters for air, fuel, oil, and hydraulic systems. The company was founded in 1961 by HeinzMANN and is now a subsidiary of the Freudenberg Group.
Filter type: Activated carbon filter with polyphenol Height [mm]: 32Length [mm]: 254Width [mm]: 235
Filter type: Activated carbon filter with polyphenol Height [mm]: 32Length [mm]: 254Width [mm]: 235
Filter type: Activated carbon filter with polyphenol Height [mm]: 36Length [mm]: 279Width [mm]: 241
Filter type: Activated carbon filter with polyphenol Height [mm]: 36Length [mm]: 279Width [mm]: 241
High-quality fuel filter for improved engine performance and longer vehicle lifespan, designed to capture impurities and contaminants.
Filter type: Activated carbon filter with polyphenol Height [mm]: 32Length [mm]: 254Width [mm]: 235