This little guy basically keeps fluids in and keeps things out. Specifically, it seals the space between rotating shafts – like the ones on your crankshaft or camshaft – and the stationary parts of your engine. It prevents oil leaks, but also stops dirt, dust, and water from getting inside where it shouldn’t. Think of it like a really effective gasket, but designed for moving parts. It’s a pretty critical component within the engine itself. You’ll find them on a lot of different rotating shafts – the front and rear of the crankshaft, camshafts, and even sometimes on the transmission output shaft. Its job is to maintain proper oil pressure and lubrication while keeping contaminants from damaging those important internal engine pieces. It’s not something you see directly, it’s all inside there. Well, if it fails, you’ll notice if you start seeing oil leaks. Depending on where the seal is, the leak could be pretty significant. A failing seal can lead to low oil levels, which of course can cause major engine damage if you don’t catch it. Sometimes a failing seal can also cause a loss of power or strange noises. It's a relatively inexpensive part, but fixing the damage caused by a failed one can get costly, so it's good preventative maintenance. You can find shaft seals pretty easily at places like Fixparts Online, and usually replacing one is straightforward if you’re comfortable doing your own work. We’re here to help: Shaft Seal (MPN 11141715099) has a 12-month warranty!

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