Air filter MANN-FILTER C 30 400/1

MANN-FILTER C 30 400/1 Air Filter
The MANN-FILTER C 30 400/1 is a crucial component of the internal combustion engine's intake system. Its main function is to filter the air entering the combustion chamber from all solid particles — such as dust, dirt, soot, sand, and even tiny metal fragments. This ensures:

• protection of engine components from abrasion (e.g., cylinder walls, pistons, valves),

• maintenance of an optimal fuel-air mixture,

• efficient and safe engine performance with full power and reduced fuel consumption.

Filter construction
The C 30 400/1 has a rectangular design with a high-efficiency filter insert.
The filtration medium is a multi-layered paper arranged in a dense pleated shape, increasing surface area and performance.
The filter housing is made from temperature- and moisture-resistant plastic, ensuring a tight seal and installation durability.

Why regular air filter replacement matters
A dirty filter = less air → worse combustion → higher fuel consumption.
Excess contaminants → increased intake temperature → risk of engine knock.
Prolonged use without replacement can damage the engine.
A clogged filter also affects the performance of the mass airflow sensor (MAF), leading to engine control errors.

The manufacturer recommends replacing the air filter every 15,000–20,000 km or once a year, depending on operating conditions. In dusty, sandy, or off-road environments, it should be replaced even more frequently.

Application – which vehicles use the C 30 400/1 filter?
The MANN-FILTER C 30 400/1 is primarily used in BMW vehicles with gasoline and diesel engines. Example models:

BMW:
3 Series (F30, F31, F34)
4 Series (F32, F33, F36)
5 Series (F10, F11 – selected versions)
X3 (F25)
X4 (F26)
X5 and X6 (selected versions)

It’s always best to verify compatibility using the vehicle’s VIN or the MANN-FILTER catalog, as different filter variants may exist within the same model.

Technical specifications
Length: 344 mm
Width: 135 mm
Height: 70 mm
Type: rectangular filter
OEM code (comparable): BMW 13717601870

Benefits of using MANN-FILTER C 30 400/1

• Filtration efficiency above 99.5%

• Protection of the engine and intake components

• Reduced fuel consumption compared to a clogged filter

• Better performance and smoother engine operation

• Long service life, even under tough road conditions