0BH409400E Volkswagen radial sha

This little guy essentially seals and guides moving parts within the engine, specifically around a rotating shaft. Think of it as a smooth pathway, keeping oil where it needs to be and dirt and debris out. It prevents leaks and keeps everything lubricated. It’s not a major structural component, but it’s vital for how other things operate. Primarily, it’s used in things like water pumps, alternators, and sometimes even in the front of the crankshaft where it meets the harmonic balancer. Any place you have a shaft spinning inside a housing, you'll likely find a radial shaft seal there. It’s part of the sealing system, working alongside other gaskets and o – rings to keep fluids contained and the engine running smoothly. It’s a small part but a failure can lead to bigger problems. If it starts leaking, you’ll notice oil being thrown around, or potentially coolant if it’s in the water pump area. That loss of fluid can cause overheating, damage to other components, and ultimately, a breakdown. It acts like a shield, protecting critical engine parts from contamination and preventing oil loss. A worn or damaged radial shaft seal is often the cause of persistent oil leaks that are tricky to find. You'll notice if it fails – usually with a mess under the car and a warning light eventually. We keep a good range of these at Fixparts Online if you need to check if we have the right one for your vehicle, but honestly any reputable auto parts place will carry them. Future-proof your vehicle: Radial Shaft (MPN 0BH409400E) has a 12-month warranty!

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