CCV Oil Separator System for BMW 3 Series E36 (1992-1998)

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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
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Bavarian Autosport - Corporate Logo
T#:638090
Part#: 11151703484
In Stock
Sale - Save 20% $ 38.99

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

$ 31.19 USD
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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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Crankcase Vent Valve - E36, E39, Z3
Crankcase Vent Valve - E36, E39, Z3
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:14288
Part#: TMS14288
In Stock
Sale - Save 26% $ 51.99

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

$ 38.73 USD
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Sale - Save 26%
$ 51.99

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

$ 38.73 USD
Free Shipping on orders $49 and up
Add to Wish List
The crankcase vent valve (CVV) holds and releases oil vapors that build up in the engine. It's the same type of system previously known as a PCV valve and the same deficiencies exist. Over time, the CVV will become saturated and clogged with oil. When this happens, the oil-rich vapors from the engine will back up into the intake tract and eventually into the combustion chamber. The oil added to the gasoline/air mix will cause misfires, carbon deposits, rough running, and blue smoke out the tailpipe. Replacing the CVV every 70,000 miles will ensure the correct and clean ventilation of oil vapor.

Replacement of the CVV can be done without removing the intake manifold. But replacing it during an M50 Manifold upgrade is the perfect time.

Included:
11151703484 - crankcase vent valve
13411733217 - sealing grommet

This item fits the following BMWs:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3
1997-1998 E39 BMW 528i
1997-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW Z3 M Roadster M Coupe
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