Basically, a seal ring creates a tight barrier between different parts of the engine, specifically around things like the crankshaft where parts rotate or connect. It prevents leaks—oil, coolant, anything that shouldn’t be getting from one side to the other. They’re usually made of a rubber or a similar flexible material designed to compress and seal. Some are a bit more complex and might have metal reinforcements inside. Think of it like this: around the crankshaft and other moving parts, everything is constantly spinning and sliding. The seal ring sits right where parts meet, and it’s there to keep everything contained. It’s part of the crankcase sealing system. Without it, you’d have oil leaking out, and that’s never good. It's a small component, but plays a big part in maintaining engine pressure. Well, if these rings fail, you'll notice if you have an oil leak pretty quickly, usually under the car or maybe you’ll smell burning oil. More seriously, a leak can lead to low oil levels which can really damage your engine over time. It’s one of those things where replacing it proactively is a lot cheaper than dealing with the consequences of a failing engine. These aren't usually something you’d try to repair; it’s best to just replace it. You can often find them pretty easily online, places like Fixparts Online have a good selection. They’re inexpensive, and pretty straightforward to install when you're already working on the engine. Long-term solution: Seal Ring (MPN N0138149) comes with a 12-month warranty!

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• Get parts made specifically for your VW, ensuring a perfect fit and reliable performance. • Volkswagen parts are quality-tested to meet high standards, so you can drive with confidence. • Using genuine VW parts helps maintain your vehicle’s value. • We have a wide selection of parts, from everyday maintenance items to more complex components. FixParts Online – Your Trusted Source for Quality Volkswagen Auto Parts.