Original MANN-FILTER Air Filter CF 1940 - Secondary Air Filter Element – For Trucks, Buses and Utility Vehicles

Product Overview

The MANN‑FILTER Air Filter CF 1940 – Secondary Air Filter Element is engineered specifically for heavy-duty commercial vehicles such as trucks, buses and utility vehicles. It serves as a secondary filtration stage that captures fine particulates after the primary filter has performed its main cleaning function.

Key Features

• High‑Efficiency Filtration: Designed to trap particles down to 0.5 µm, ensuring cleaner air for engine components and cabin occupants.
• Durable Construction: Constructed from high‑grade polypropylene media with a reinforced backing that resists abrasion, moisture absorption and chemical attack.
• Optimised Flow Dynamics: The element’s geometry reduces pressure drop while maintaining filtration performance, which translates into improved fuel economy and reduced engine load.
• Easy Installation: Comes in a standard rectangular shape with pre‑cut mounting tabs that fit most factory filter housings without modification.
• Long Service Life: Engineered to withstand the harsh operating conditions of commercial fleets, providing reliable protection for up to 12 months under normal duty cycles.

Intended Applications

The CF 1940 is specifically tailored for:

• Heavy‑Duty Trucks: Including models from Volvo, Renault and other major manufacturers that require robust secondary filtration to protect turbochargers and intake valves.
• Buses: Commercial passenger vehicles where cabin air quality is paramount for driver comfort and safety.
• Utility Vehicles: Forklifts, generators and mobile equipment that operate in dusty or corrosive environments.

Design & Construction Details

The element features a multi‑layer media stack:

1. Pre‑Filter Layer – A coarse mesh that captures larger debris, extending the life of the finer layers.
2. Fine Filtration Core – The primary particle capture zone made from high‑density polypropylene fibers.
3. Back‑Support Layer – Provides structural integrity and prevents media migration during vibration or shock.

The outer casing is a lightweight yet robust polymer that protects the media while allowing airflow. All components are manufactured under strict quality control to meet MANN‑FILTER’s global standards.

Installation Procedure

1. Remove Existing Filter: Open the filter housing and carefully lift out the old secondary element, noting any orientation marks.
2. Inspect Housing: Clean the interior of the housing to remove dust or debris that could compromise seal integrity.
3. Place New Element: Align the mounting tabs with the corresponding slots in the housing. Ensure the filter is seated flush against the sealing gasket.
4. Secure Fasteners: Tighten all bolts or clips according to manufacturer specifications, typically using a torque wrench set to 5 Nm.
5. Verify Seal Integrity: Inspect for any gaps or misalignments that could allow unfiltered air to bypass the element.

Maintenance & Replacement Guidelines

While the CF 1940 is designed for durability, regular inspection is recommended:

• Visual Check: Inspect for visible clogging or damage every 3 months.
• Pressure Drop Test: Measure differential pressure across the filter; a rise of more than 0.5 kPa indicates significant fouling.
• Replacement Interval: Replace after 12 months or when performance metrics fall below acceptable thresholds.

Performance Benefits

• Engine Protection: By removing fine particulates, the filter reduces wear on pistons, valves and turbochargers, extending engine life.
• Cabin Comfort: Secondary filtration improves indoor air quality for drivers and passengers, reducing exposure to dust and allergens.
• Operational Efficiency: Lower pressure drop translates into reduced fuel consumption and lower emissions.
• Reliability in Harsh Environments: The robust media resists oil, water and chemical contamination common in industrial settings.

Compatibility Summary

The CF 1940 is engineered to fit a wide range of heavy‑vehicle models. Its standard dimensions (approximately 210 mm × 120 mm × 30 mm) and mounting design allow seamless integration into existing filter housings without the need for custom adapters.

Conclusion

The MANN‑FILTER Air Filter CF 1940 – Secondary Air Filter Element delivers high‑performance filtration, durability, and ease of installation for commercial vehicles that demand reliable protection against airborne contaminants. Its thoughtful design ensures that engines run cleaner, cabins stay healthier, and maintenance schedules remain predictable.