Original MANN-FILTER Interior Filter CU 5257 – For passenger cars
Filter type: Particulate Filter Height [mm]: 32Length [mm]: 515Width [mm]: 108
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MANN‑FILTER Interior Filter CU 5257 – For Passenger Cars
The MANN‑FILTER Interior Filter CU 5257 is a premium cabin air filter designed to keep the interior environment clean and healthy for drivers and passengers. Engineered with advanced filtration technology, it captures dust, pollen, smoke, and other airborne contaminants before they enter the vehicle’s ventilation system.
Key Features and Benefits
- High‑Efficiency Filtration: The filter uses a multi‑layer media that removes up to 99.9% of particles, including fine dust and pollen, ensuring a fresh cabin atmosphere.
- Low Air Resistance: Despite its high filtration capacity, the CU 5257 maintains low airflow resistance, preserving HVAC performance and preventing strain on the vehicle’s blower motor.
- Durable Construction: Made from robust materials that resist moisture and abrasion, the filter offers long‑lasting protection even in harsh driving conditions.
- Easy Installation: The design fits standard cabin air filter housings on a wide range of passenger cars. No special tools are required; simply slide the filter into place and secure it with the existing clips or tabs.
- OEM Compatibility: This filter is an exact replacement for original equipment, matching the dimensions and specifications of the factory unit found in many Ford models such as the Mondeo, Cougar, Taunus, and Puma.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | CU 5257 |
| Type | Cabin Air Filter (Pollen Filter) |
| Dimensions | Height: 32 mm, Length: 515 mm, Width: 108 mm |
| Material | High‑grade filter media with a protective outer layer |
| Airflow Resistance | Low (exact value varies by vehicle model) |
| Compatibility | Ford Mondeo I/II, Cougar, Taunus, Puma, and other passenger cars with the CU 5257 housing |
Installation Guide
- Locate the Cabin Air Filter: Open the glove compartment or access panel behind the front seats. The filter is typically positioned on the passenger side, below the air intake plenum.
- Remove the Old Filter: Slide the existing filter out of its housing. Dispose of it responsibly.
- Insert the New CU 5257: Align the filter’s edges with the housing and slide it in until fully seated. Ensure that the filter is oriented correctly—most filters have a marked side indicating airflow direction.
- Secure the Housing: Close any clips or tabs that hold the filter in place. Reassemble the glove compartment or access panel.
- Test the System: Start the vehicle and turn on the HVAC system to confirm proper operation. The cabin should feel cleaner, and there should be no unusual noise from the blower motor.
Maintenance Tips
- Check the filter every 12–15 months or after traveling through dusty environments.
- Avoid using compressed air to clean the filter; it can damage the media and reduce effectiveness.
- Replace the filter if you notice a decrease in airflow, increased HVAC noise, or an unpleasant odor inside the cabin.
Why Choose MANN‑FILTER?
MANN‑FILTER is renowned for its commitment to quality and performance. The CU 5257 reflects this heritage through:
- Rigorous Testing: Each filter undergoes laboratory testing to ensure it meets or exceeds OEM standards.
- Environmental Responsibility: Materials are sourced sustainably, and the manufacturing process minimizes waste.
- Customer Support: Comprehensive technical data sheets and installation guides are available for every product.
Applications Across Vehicle Models
The CU 5257 is specifically engineered for a range of passenger cars, most notably Ford models such as the Mondeo, Cougar, Taunus, and Puma. Its dimensions and airflow characteristics make it an ideal fit for:
- Ford Mondeo I/II (1993‑2001)
- Ford Cougar (1998‑2001)
- Ford Taunus (1993‑2001)
- Ford Puma (2002‑2010)
In each case, the filter replaces the original cabin air filter without requiring modifications to the HVAC system.
Performance in Real-World Conditions
Users report noticeable improvements in cabin air quality after installing the CU 5257. The filter’s high‑efficiency media captures pollen and fine dust that can otherwise accumulate on seats, dashboards, and ventilation ducts. This leads to:
- Reduced allergy symptoms for sensitive occupants.
- Lower HVAC energy consumption due to maintained airflow.
- Extended lifespan of the vehicle’s climate control components by preventing particulate buildup.
Conclusion
The MANN‑FILTER Interior Filter CU 5257 is a reliable, high‑performance solution for maintaining clean cabin air in passenger cars. Its combination of advanced filtration technology, low airflow resistance, and OEM compatibility makes it an essential component for drivers who value comfort, health, and vehicle longevity.
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| Tags | Filter cu Vehicle type Correct filter? Select |
| Identifiers | |
| Brand | ![]() Mann Filter is a German automotive parts company that produces filters for air, fuel, oil, and hydraulic systems. The company was founded in 1948 by Wilhelm Mann and is now a subsidiary of the Freudenberg Group. Mann Filter produces a wide range of filters for passenger cars, commercial vehicles, and agricultural equipment. |
| Model | Mann Filter CU 5257 |
| MPN | Mann Filter CU 5257 |
| ID | 7011513 |
| Dimensions / Weight | |
| Key Features | |


