ST 314 Fuel Filter (Flow-through, metal housing)
This filter is designed to protect the injection system and injectors from contaminants found in the fuel tank (rust, scale, sediment), ensuring smooth engine operation.

Key Features:
Durable metal housing: Resistant to high pressure in the fuel line and external mechanical impacts (essential for filters located under the vehicle's underbody).

Filtration Level: High-quality paper curtain with a special impregnation effectively captures particles down to several microns in size, preventing injector nozzle clogging.

Stable Flow: The filter design minimizes fuel flow resistance, reducing the load on the fuel pump and eliminating sluggish acceleration.

Sealed Fittings: Precise machining of the inlet and outlet ports ensures a secure, leak-free connection to the fuel lines.

Applicability (Wide Range):
The ST 314 filter is a cross-number for many popular platforms:

BMW: 3 (E30, E36), 5 (E34, E39), 7 (E32, E38)

AUDI: 80, 100, A4, A6 (early generations)

MERCEDES-BENZ: C-Class (W202), E-Class (W124, W210), S-Class (W140)

VOLKSWAGEN: Golf, Passat, Vento

PEUGEOT / RENAULT: Models with multipoint fuel injection.

Specifications:
Height: 162 mm

Outer diameter: 74 mm

Fuel type: GasolineTechnical note:
Replacing the ST 314 filter is recommended every 20,000–30,000 km. A clogged fuel filter can cause difficult starting, loss of power, and premature failure of the electric fuel pump.