This little ring basically creates a tight seal. It stops air and brake fluid from leaking where the pump's parts connect. It’s a simple part, but it's all about preventing loss of vacuum – that suction the pump needs to work properly. It’s typically made of a rubber or synthetic material designed to resist those fluids and keep its shape. The vacuum pump itself is vital for power brakes, and in some vehicles, it helps with other systems like the 4x4 engagement. This seal ring is positioned inside the pump, where things move and connect. It stops the vacuum from escaping, ensuring your brakes have the stopping power they need. Think of it like a really important gasket – if it goes bad, things start to leak. Well, a leaking vacuum pump means your brakes will start to feel spongy or weak. You’ll notice if you have to press the pedal further down than usual, or if it feels soft under your foot. It can also cause issues with other vacuum – assisted systems. It's one of those things that, when it’s good, you don’t even think about it. But when it fails, it can be a safety concern. They’re pretty inexpensive, honestly. You can find them on places like Fixparts Online, and replacing it is usually a straightforward repair. It’s a small part with a big job, so it’s good to keep it in good shape. Built to endure: Seal Ring (MPN 038145345) comes with a 12-month warranty!

About Volkswagen

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• Genuine Volkswagen parts are designed specifically for your vehicle, ensuring a perfect fit and optimal performance. • Using Volkswagen parts helps maintain your vehicle's original quality, safety features, and value. • Our parts are rigorously tested to meet Volkswagen’s high standards, giving you peace of mind and long-lasting reliability. • You'll find a wide range of parts and accessories, backed by Volkswagen's warranty and expert support. FixParts Online – Your Trusted Source for Quality Volkswagen Auto Parts.