Bavarian Autosport CCV Oil Separator System for BMW Z3 (1996-2002)

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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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Bav Auto Crankcase Pressure Regulator Valve - E36 E39 Z3
Bav Auto Crankcase Pressure Regulator Valve - E36 E39 Z3
For vehicles with production date up to 09/1998
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:638090
Part#: 11151703484
Ships on Jul 28, 2026
Sale - Save 20% $ 38.99

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

$ 31.19 USD
Free Shipping on orders $49 and up
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Sale - Save 20%
$ 38.99

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

$ 31.19 USD
Free Shipping on orders $49 and up
Add to Wish List
BMW has an issue with oil separators freezing in cold weather if the engine is not fully warmed up during driving. Common symptoms are a howling noise followed by oil leaks. Crankcase breather valve used to purge the oil vapor from the engine block into the valve cover. This valve has 4 hoses connected to it, running to dipstick, valve cover, air intake. You should also look into replacing your valve cover gasket when changing the separator.
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