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CCV Oil Separator System

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

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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BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine ...

2X Entries Into Our F80 M3 Sweepstakes

T#:39059262

Part#: 11157840446

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$ 40.99 USD

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$ 40.99 USD

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BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine is a crucial component that ensures proper crankcase ventilation by regulating oil vapor flow into the intake manifold, preventing excessive oil consumption and buildup. Designed specifically for BMW E46 models with the S54 3.2L engine, this valve helps maintain engine efficiency and performance. BMW engines are known to experience oil separator freezing in cold weather if not fully warmed up, which can lead to howling noises and oil leaks. To ensure a thorough repair, replacing the valve cover gasket when changing the separator is highly recommended.

Regulates crankcase pressure to prevent excessive oil consumption
Helps maintain proper engine ventilation for peak performance
Reduces the risk of oil separator freezing and associated leaks
Direct-fit replacement for BMW E46 models with S54 3.2L engine
High-quality materials ensure durability and long-lasting performance
Recommended to replace the valve cover gasket for a complete repair

Protect your BMW's engine from excessive oil consumption and leaks by replacing a failing crankcase pressure regulator valve with this premium-quality replacement.

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Bav Auto Crankcase Pressure Regulator Valve - E36 E39 Z3

For vehicles with production date up to 09/1998

10X Entries Into Our F80 M3 Sweepstakes

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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Qty

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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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

10X Entries Into Our F80 M3 Sweepstakes

T#:14288

Part#: TMS14288

In Stock

Sale - Save 26% $ 51.99

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

$ 38.23 USD

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Qty

Sale - Save 26%

$ 51.99

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

$ 38.23 USD

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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Crankcase Pressure Regulator Valve

For vehicles with production date up to 09/1998

2X Entries Into Our F80 M3 Sweepstakes

T#:594300

Part#: 11151703484

In Stock

$ 50.99

This product was last offered at the strikethrough price on
08-31-2026

$ 48.99 USD

Add to Wish List

Qty

$ 48.99 USD

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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.

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

BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine ...

Bav Auto Crankcase Pressure Regulator Valve - E36 E39 Z3

Crankcase Vent Valve - E36, E39, Z3

Crankcase Pressure Regulator Valve

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