These little rubber rings create a seal. Essentially, they sit in a groove and get squeezed between two parts, preventing anything – oil, coolant, exhaust gases – from leaking out where it shouldn't. Think of it like a really precise gasket, but in a small, circular shape. They come in different materials, like nitrile or silicone, depending on what they’re sealing and the temperatures involved. In your turbocharger specifically, these O – rings are crucial for sealing oil and coolant lines. The turbocharger spins at incredibly high speeds and gets super hot. It needs constant lubrication and cooling. These O – rings keep those fluids contained within the turbocharger, where they belong, and prevent them from leaking into the exhaust or engine bay. They’re used in multiple places – where the oil feed line connects, where the coolant lines connect, and sometimes between different turbocharger housing parts. Honestly, these are one of those small parts that can cause big problems if they fail. Because they're responsible for keeping vital fluids contained, a leaking O – ring can lead to oil starvation in the turbo, overheating, or even a complete turbo failure. You’ll notice if one goes bad – likely through oil leaks, a loss of boost, or strange noises coming from the turbo area. They're cheap to replace, so it’s a really smart preventative measure, especially if you're already doing other turbo work. Places like Fixparts Online have a good selection of turbocharger O – rings and kits. It’s usually a good idea to replace all the O – rings in the turbo when you disassemble it, just to be safe. Why settle for less? O-Ring (MPN 11657577018) comes with a 12-month warranty!

Why Choose BMW?

• Get parts made specifically for your BMW, ensuring a perfect fit and optimal performance. • BMW parts are engineered to last, meaning fewer repairs and more time on the road. • Using genuine BMW parts helps maintain your vehicle’s value. • You’ll get the same quality and reliability that BMW is known for, giving you peace of mind. Drive with confidence – choose BMW parts at FixParts Online.