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
Bavarian Autosport - Corporate Logo
T#:638090
Part#: 11151703484
In Stock
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$ 28.49 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 Pressure Regulator Valve
Crankcase Pressure Regulator Valve
For vehicles with production date up to 09/1998
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Rein - Corporate Logo
T#:594300
Part#: 11151703484
Ships Jul 15, 2025
$ 48.99 USD
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$ 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.
PCV Valve Seperator
PCV Valve Seperator
Bremmen Parts - Corporate Logo
T#:15511828
Part#: 11617533400
Ships Jul 22, 2025
$ 44.99 USD
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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. Don't forget to order a valve cover gasket to make your separator change easier.
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Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46
Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46
For vehicles with production date up to 10/2003
Bremmen Parts - Corporate Logo
T#:640147
Part#: 11611432559
Ships on Aug 29, 2025
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$ 16.49 USD
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Crankcase Vent Hose - From Valve Cover to Oil Separator - Fit BMWs with the M52 or M54 6 cylinder engine
BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine
BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine ...
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Rein - Corporate Logo
T#:39059262
Part#: 11157840446
Ships Jul 22, 2025
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$ 30.99 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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Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38
Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38
Up to Model Year 09/1998
Bremmen Parts - Corporate Logo
T#:640144
Part#: 13411733217
Ships Sep 24, 2025
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$ 7.59 USD
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This grommet is located on the back side of the PCV or idle control valve
Bav Auto Crankcase Pressure Regulator Valve - E46 M3, Z3 M Coupe/Roadster S54 3.2L
Bav Auto Crankcase Pressure Regulator Valve - E46 M3, Z3 M Coupe/Road...
Bavarian Autosport - Corporate Logo
T#:640503
Part#: 11157840446
Special Order: No Guaranteed ETA
Sale - Save 15% $ 41.99
$ 35.69 USD
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Sale - Save 15% $ 41.99
$ 35.69 USD
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This Bav Auto oil separator helps to remove oil from the air vented from the crankcase via a hose from the valve cover. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes, and poor idle. This crankcase vent valve is also known as the Oil separator valve or PCV. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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