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    Hydraulic Filter, automatic transmission

    Product number: 178421
    ART: 178421 / EAN: 4054224784211

    FEBI BILSTEIN
    Advised products
    Price incl. vat.
    € 80,26

    Core Charge 0.00

    Leverdatum: 22-04-2026

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    Manufacturer Model Version Engine code Construction type Construction start Construction end Pk Power kw
    AUDI AUDI
    VW VW
    Usage numbers
    FE178421
    178421
    4
    05422E+12

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    Hydraulic Filter, automatic transmission

    The Hydraulic Filter, automatic transmission (178421) removes contaminants from hydraulic or transmission fluid to protect internal components. Replacing a clogged filter restores smooth shifting and reliable hydraulic performance. Use Porza’s smart search to find the correct filter.

    Febi Bilstein is a globally respected manufacturer and supplier of high-quality replacement parts for passenger cars and commercial vehicles. With over 175 years of automotive expertise, Febi stands for reliability, innovation, and German engineering precision. The brand offers an extensive product range of more than 47,000 items, covering steering, suspension, braking, engine, drivetrain, and electrical systems.

    Every Febi component meets or exceeds OEM standards, ensuring optimal fit, performance, and durability. Their in-house production and strict quality control guarantee parts that professionals trust worldwide. Febi Bilstein is also a pioneer in the aftermarket, being one of the first to offer parts with full OE-matching quality outside the dealership network.

    Whether you're servicing a modern European vehicle or maintaining a heavy-duty truck, Febi provides reliable solutions with fast availability and long-lasting performance. Choose Febi Bilstein for precision-made parts backed by generations of expertise and a commitment to quality.

    Wilhelmstraße 47, Ennepetal, Duitsland

    +492333911-0

    support@bilsteingroup.com

    FAQ

    A hydraulic filter for an automatic transmission is a filtration component that cleans the transmission fluid by removing dirt, metal particles, and other contaminants. Its function is to ensure clean fluid circulates through the hydraulic system, protecting internal components such as valves, clutches, and the transmission pump, while maintaining smooth shifting and performance.


    Key specifications include filtration efficiency (micron rating), flow rate capacity, filter design (internal or external), and compatibility with the specific transmission model. The filter media is typically made from high-quality paper or synthetic materials designed to capture fine particles while allowing proper fluid flow. It must withstand transmission fluid, pressure, and temperatures commonly ranging from -40°C to +120°C.


    Replacement is recommended during regular transmission service intervals or when changing the transmission fluid. A clogged or degraded filter can restrict fluid flow, leading to poor shifting, overheating, or increased wear on internal components.


    Porza offers a fit guarantee option where your vehicle details, such as license plate or VIN, are checked against product specifications. This ensures the filter matches your transmission system, including size, design, and performance requirements.


    Porza supplies high-quality transmission and hydraulic system components with fast delivery across Europe. Customers can order online or choose in-store pickup in the Netherlands, Germany, or Belgium. This allows quick and reliable access to essential maintenance parts for both professional workshops and individual users.


    If you select the fit guarantee, Porza verifies compatibility before shipment. If the product does not fit or meet expectations, it can be returned according to the return policy. This ensures a reliable and risk-free purchasing experience.


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    Straelseweg 52, 5911 CR
    Venlo
    The Netherlands

    Willem de Rijkelaan 15a, 5616 HH
    Eindhoven
    The Netherlands

    info@porza.nl
    085 401 1901
    KVK 0123456678
    BTW 01NL123435B1