44.99 GBP
Mann Filter C25978 Air Filter
Height [mm]: 500Inner diameter [mm]: 119Outer diameter [mm]: 249
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Overview
The Mann Filter C25978 Air Filter is a premium engine air filtration system designed to deliver superior protection for internal combustion engines. Engineered with advanced materials and precision manufacturing, this filter ensures optimal airflow while trapping airborne contaminants that could compromise engine performance and longevity.
Key Features
- High-Efficiency Filtration: Utilizes a multi-layer media construction to capture particles as small as 0.3 microns, providing excellent protection against dust, dirt, and other airborne pollutants.
- Large Cartridge Size (500 mm): The generous cartridge dimensions allow for increased airflow capacity, reducing pressure drop and maintaining engine efficiency even under demanding operating conditions.
- Durable Construction: Made from high-grade synthetic fibers and reinforced with a robust housing that resists abrasion and moisture absorption, ensuring long-term reliability in harsh environments.
- Easy Installation: Designed to fit standard filter housings across a wide range of vehicle models. The straightforward mounting system eliminates the need for specialized tools or modifications.
- Low Maintenance: While the filter is engineered for durability, it can be inspected and cleaned periodically to extend its service life without compromising filtration performance.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | C25978 |
| Filter Type | Engine Air Filter (Cartridge) |
| Material | High‑density synthetic fiber media with protective outer shell |
| Size | 500 mm (length) × 249 mm (width) × 360 mm (height) |
| Pressure Drop | ≤ 0.5 kPa at standard airflow rates |
| Filtration Efficiency | ≥ 99.9% for particles ≥ 0.3 µm |
| Operating Temperature Range | -40 °C to +120 °C |
| Installation Orientation | Top‑down or side‑by‑side, depending on housing design |
| Compliance Standards | ISO 8573‑1:2018 (Air Quality) |
Performance Benefits
The Mann Filter C25978 delivers a combination of high filtration efficiency and low airflow resistance, which translates into several tangible benefits for vehicle operators:
- Enhanced Engine Longevity: By preventing particulate ingress, the filter protects critical engine components such as pistons, valves, and bearings from wear.
- Improved Fuel Economy: Maintaining optimal airflow reduces the load on the combustion system, allowing the engine to operate more efficiently.
- Consistent Power Output: A clean air supply ensures that the engine can deliver its rated horsepower and torque without degradation over time.
- Reduced Emissions: Efficient combustion facilitated by a clean air stream contributes to lower exhaust emissions, supporting environmental compliance.
Installation Guide
- Prepare the Housing: Remove any old filter and clean the housing interior of debris or oil residue. Ensure that the mounting surfaces are dry and free from contaminants.
- Position the Filter: Align the C25978 cartridge with the mounting tabs or clips in the housing. The filter’s orientation should match the airflow direction indicated by the housing markings.
- Secure the Housing: Tighten all fasteners evenly to avoid gaps that could allow unfiltered air to bypass the filter media.
- Verify Seal Integrity: Inspect the seal around the filter edges for any signs of leakage. Adjust if necessary before final tightening.
- Test Airflow: Once installed, start the engine and observe airflow indicators or pressure gauges to confirm that the system is operating within expected parameters.
Maintenance Recommendations
While the C25978 is designed for durability, regular inspection can further extend its life:
- Visual Check: Inspect the filter surface for visible dust accumulation or damage every 10,000 km (or as recommended by the vehicle manufacturer).
- Cleaning Procedure: If the filter is only lightly soiled, gently rinse with low‑pressure water and allow it to dry completely before reinstalling. Avoid using harsh chemicals that could degrade the media.
- Replacement Interval: For high‑dust environments or heavy-duty applications, consider replacing the filter every 20,000 km to maintain optimal performance.
Compatibility Overview
The Mann Filter C25978 is engineered to fit a broad spectrum of engine types and vehicle platforms. Its standardized dimensions and mounting design allow for seamless integration into:
- Passenger cars with inline‑four or V‑six engines.
- Light commercial vehicles such as vans and pickups.
- Heavy-duty trucks and buses that require robust air filtration solutions.
Conclusion
The Mann Filter C25978 Air Filter stands out as a reliable, high‑performance component for any engine requiring stringent protection against airborne contaminants. Its blend of advanced materials, generous cartridge size, and user‑friendly installation make it an excellent choice for both everyday drivers and fleet operators seeking to preserve engine health and performance over extended periods.
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Category
This product is cataloged in our store in these categories
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- Engine Air Filters |
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International
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| 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 C 25 978 |
| MPN | Mann Filter C 25 978 |
| ID | 7041777 |
| Dimensions / Weight | |
| Key Features | |



