Hengst CCV Oil Separator System

BMWs oil separator and crankcase ventilation system is excellent at what it does when properly maintained. Always inspect any visible hoses when you are under the hood and follow the manufacturers replacement schedule.

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Crankcase Pressure Regulator Valve

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T#:22064591

Part#: AS830M

Ships on Jul 27, 2026

Sale - Save 27% $ 35.99

This product was last offered at the strikethrough price on
05-03-2026

$ 26.31 USD

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Sale - Save 27%

$ 35.99

This product was last offered at the strikethrough price on
05-03-2026

$ 26.31 USD

Add to Wish List

BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate. Replace all the components of the oil separator system together to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable.

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