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    Seal Ring, expansion tank cap

    Product number: 103744
    ART: 103744 / EAN: 4054224037447

    FEBI BILSTEIN
    Advised products
    Price incl. vat.
    € 1,09
    Leverdatum: 10-06-2026

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    Seal Ring, expansion tank cap

    The Seal Ring, expansion tank cap (103744) creates a pressure-tight seal between critical mechanical components. Replacing it with a Porza-quality seal ring restores leak-free operation and long-term system reliability.

    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 seal ring for an expansion tank cap is a sealing component installed inside the cap of the coolant reservoir. Its function is to maintain a pressure-tight seal, preventing coolant leaks and ensuring proper pressure in the cooling system.

    Key specifications include inner and outer diameter, thickness, material (typically rubber or heat-resistant elastomer), temperature resistance, and compatibility with the expansion tank cap. It must withstand pressure and coolant exposure.

    Replacement is necessary when the seal is worn, hardened, cracked, or leaking. Common symptoms include coolant loss, pressure issues, or visible damage to the seal.

    Porza offers a fit guarantee option where your vehicle details are checked against product specifications to ensure correct compatibility.

    Porza provides high-quality cooling system components with fast delivery across Europe and options for online ordering or in-store pickup.

    If the fit guarantee is selected, compatibility is verified before shipping. If the product does not fit, it can be returned according to the return policy.

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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