0C6311290 Audi CATCH

Basically, a catch can separates oil and air vapor before it gets recirculated back into your engine’s intake. Now, all engines produce some of this blow – by – it’s just gases slipping past the piston rings. Normally, that stuff gets routed back into the intake, and that’s fine in small amounts. But over time, it builds up carbon and gunk. This can collects that moisture and oil before it gets a chance to cause problems. Think of it as a little holding tank for things your engine doesn’t want hanging around in the intake. It’s typically installed in the lines that handle crankcase ventilation. Instead of that oily mist going back into your engine, it collects in the can. You periodically drain it—it's pretty simple. It’s not something your engine needs to run, but it definitely helps keep things clean. It’s really about protecting your engine long – term. That buildup from the blow – by can cause a lot of issues—carbon deposits on valves, dirty mass air sensors, even reduce octane and performance. A catch can acts like a shield, preventing that stuff from wreaking havoc. You’ll notice if things get bad—maybe a rough idle, a check engine light, or just generally reduced power. Keeping things clean can really extend the life of your engine and improve how it runs. You can find them pretty easily online, Fixparts Online has a good selection, and installation isn't too bad for a DIYer. Customer support you can rely on: Catch Can (MPN 0C6311290) has a 12-month warranty!

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