Original MANN-FILTER Air Filter CF 811 - Secondary Air Filter Element – For utility vehicles

MANN‑FILTER CF 811 Secondary Air Filter Element

The MANN‑FILTER CF 811 is a high‑performance secondary air filter designed specifically for utility vehicles and off‑highway applications. It serves as an essential component in the engine’s air intake system, ensuring that only clean, dry air reaches the combustion chamber. By maintaining optimal airflow, this element helps preserve fuel efficiency, reduce emissions, and extend engine life.

Key Design Features

• Robust Construction: The filter housing is made from durable, corrosion‑resistant metal that withstands harsh operating environments. Its reinforced frame protects the internal media from physical damage during transport or installation.
• High‑Efficiency Media: Inside the housing lies a multi‑layer filtration medium engineered to capture fine particulates while allowing maximum airflow. The media’s structure is optimized for low pressure drop, which translates into reduced engine load and improved performance.
• Seamless Integration: The CF 811’s dimensions and mounting points are precisely matched to the original equipment specifications of a wide range of utility vehicles, including FIAT Series 180, Deutz‑Fahr, and Fendt models. This ensures a snug fit without the need for adapters or modifications.
• Easy Maintenance: The filter can be removed quickly by loosening a few fasteners, allowing technicians to inspect or replace the media with minimal downtime.

Compatibility Overview

The CF 811 is engineered for use in numerous vehicle platforms. Below are representative examples of its fitment:

• FIAT Series 180 (180NC, 191KW)
• Deutz‑Fahr DX series (DX 6.05/85/90/110, D06 F6L912/B6L912 BF6L912)
• Fendt 300 3.8 (1985–1996 models)
• Off‑highway and non‑road applications where robust air filtration is critical.

Because the CF 811 was originally manufactured as an OEM replacement, it matches the exact dimensions and mounting geometry of the factory filter. This guarantees a seal that prevents unfiltered air from bypassing the element.

Installation Procedure

1. Preparation: Ensure the engine is cool and disconnect any electrical components that may interfere with access to the filter housing.
2. Removal of Old Filter: Loosen the retaining screws or clamps, lift the old filter out, and discard it in accordance with local environmental regulations.
3. Cleaning: Wipe the interior of the housing with a dry cloth to remove any loose debris that could compromise the seal.
4. Installation of CF 811: Place the new filter into the housing, aligning it with the mounting points. Secure it using the original fasteners and torque them to the manufacturer’s specifications.
5. Verification: Inspect for any gaps or misalignments. Reconnect electrical components if necessary.

Following these steps ensures that the filter operates at peak efficiency from day one.

Maintenance Guidelines

• Regular Inspection: Check the filter every 10,000–15,000 km or as recommended by the vehicle’s service schedule. Look for visible signs of clogging or media degradation.
• Cleaning Options: While the CF 811 is designed to be replaced rather than cleaned, in extreme environments a gentle rinse with compressed air can remove loose particulates without damaging the media.
• Replacement Interval: For most utility vehicles operating under normal conditions, replace the filter every 20,000–30,000 km. In dusty or abrasive settings, consider more frequent changes to maintain airflow and engine protection.

Performance Benefits

The MANN‑FILTER CF 811 delivers measurable advantages for operators:

• Enhanced Fuel Economy: By maintaining optimal air pressure, the engine runs more efficiently, reducing fuel consumption.
• Lower Emissions: Clean air reduces combustion byproducts, helping vehicles meet stringent emission standards.
• Extended Engine Life: Protecting the combustion chamber from dust and debris minimizes wear on pistons, valves, and other critical components.
• Consistent Performance: The low pressure drop ensures that power output remains stable even under heavy load or high ambient temperatures.

Technical Specifications

Environmental Considerations

The CF 811 is manufactured with sustainability in mind. The media uses recyclable cellulose fibers, and the metal housing can be recycled at end of life. By ensuring cleaner combustion, the filter also contributes to reduced particulate emissions, supporting environmental protection goals.

MANN‑FILTER Brand Heritage

Founded over a century ago, MANN‑FILTER has built its reputation on precision engineering and uncompromising quality. The CF 811 exemplifies this legacy: it is engineered to exacting tolerances, tested under extreme conditions, and backed by rigorous quality control processes. Customers worldwide trust the brand for reliable performance in demanding service environments.

Conclusion

The MANN‑FILTER CF 811 Secondary Air Filter Element is a critical component that safeguards engine integrity while enhancing operational efficiency across a broad spectrum of utility vehicles and off‑highway machinery. Its robust design, precise fitment, and proven performance make it the preferred choice for professionals who demand reliability without compromise.