Oil Separation & Breather System for BMW 8 Series E31 (1991-1997)

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Every car has a crankcase vent system that is supposed to suppress oil from making it into the intake ports and combustion chamber. A good functioning system will separate oil from the atmosphere and return it to the oil pan (or collect it in a catch can) while allowing the leftover vapors to burn in the combustion chamber or recirculate through the system. This has always been known as a PCV system (Positive Crankcase Ventilation) but BMW has several other names for it - oil separator, crankcase vent (CCV), and cyclonic separator. Failures in the system will allow raw oil to enter the intake and eventually into the engine itself which can have disastrous effects on engine performance and longevity. As emissions regulations on oil and gas venting have gotten more stringent the PCV systems have gotten more complex and failure prone. And because the CCV is intertwined with other systems you could experience rough running, loss of power, higher oil consumption, misfiring, stalling, or other annoying issues. There is no replacement interval for these so we recommend inspecting your crankcase vent system as part of your regular maintenance routines. Symptoms of a bad crankcase vent are: whitish or yellowish film on the underside of the oil cap, whistling/squealing noises (not caused by a belt), suction on the oil cap that makes it hard to unscrew, large amounts of white smoke from the exhaust, and excessive oil consumption.

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URO Crank Case Vent Valve - BMW E31 E38 E39 M62 M73
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URO - Corporate Logo
T#:373048
Part#: 11617501563
In Stock
$ 52.99

This product was last offered at the strikethrough price on
03-02-2026

$ 37.99 USD
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$ 37.99 USD
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An integral part of the emissions system, the PCV valve lets the crank case breathe. This allows proper intake and exhaust flow, resulting in proper running and operation.
BMW Oil Separator Valve | M60 3.0 / 4.0L
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T#:39059261
Part#: 11151747066
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$ 31.99 USD
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BMW Oil Separator Valve | M60 3.0 / 4.0L is a vital component that ensures proper crankcase ventilation by separating oil vapors from blow-by gases, preventing excessive oil consumption and maintaining engine efficiency. Designed for BMW models equipped with the M60 3.0L and 4.0L engines, this oil separator valve helps reduce carbon buildup and extends the life of essential engine components. For optimal results, it is recommended to replace the valve cover and crankcase ventilation system (CCV) when changing the separator valve.

  • Effectively separates oil vapors to prevent excessive oil consumption
  • Helps maintain proper crankcase ventilation for optimal engine performance
  • Reduces carbon buildup and prolongs engine longevity
  • Direct-fit replacement for BMW M60 3.0L and 4.0L engines
  • High-quality materials ensure durability and resistance to engine heat
  • Recommended to replace valve cover and CCV for complete system maintenance

Ensure the longevity and efficiency of your BMW engine by replacing a worn oil separator valve with this high-quality replacement.

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Genuine BMW Crank Case Vent Valve - E38 E39 E31 M62 4.4L
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Genuine BMW - Corporate Logo
T#:12551
Part#: 11617501563
In Stock
1% off MSRP $ 106.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 105.99 USD
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1% off MSRP
$ 106.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 105.99 USD
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An integral part of the emissions system, the PCV valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes, and poor idle.
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Intake Manifold Cover (PCV)
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URO - Corporate Logo
T#:373047
Part#: 11617501562
Ships in 1 Business Day
$ 55.99 USD
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An integral part of the emissions system, the PVC valve lets the crank case breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. Often split from underhood heat and age, this vents excess oil into the engine compartment. Replace it now.
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Genuine BMW Valve Cover Breather Valve - Cylinders 7-12 - E32 750iL, ...
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Genuine BMW - Corporate Logo
T#:19163
Part#: 11151718642
Ships in 2 Business Days
3% off MSRP $ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 33.99 USD
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3% off MSRP
$ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 33.99 USD
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Genuine BMW Volume Control Valve - Zyl.7-12

Fits BMW Engines including:
M70,S70

Genuine BMW Intake Manifold Cover (PCV)
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Genuine BMW - Corporate Logo
T#:19248
Part#: 11617501562
Ships in 2 Business Days
3% off MSRP $ 87.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 84.99 USD
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3% off MSRP
$ 87.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 84.99 USD
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Genuine BMW ENGINE COVER WITH NON-RETURNVALVE

ECS Tuning Baffled Oil Catch Can - 8oz
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ECS - Corporate Logo
T#:13496655
Part#: 003779ECS05-02
In Stock
Sale - Save 10% $ 238.99

This product was last offered at the strikethrough price on
06-14-2026

$ 215.09 USD
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Sale - Save 10%
$ 238.99

This product was last offered at the strikethrough price on
06-14-2026

$ 215.09 USD
Free Shipping on orders $49 and up
Upgrade Your BMW with ECS Baffled Oil Catch Can

Modern emission regulations require a closed PCV/Breather system for cleaner operation. However, inefficient oil particle capture can lead to excessive oil vapor ingestion, causing carbon buildup, reduced performance, and fuel economy. ECS Tuning's updated ECS Baffled Oil Catch Can, now with an easy-to-empty 1/4" drain fitting, is engineered to collect toxic blow-by gases, minimize carbon deposits, and reduce oil contamination within engine oil. Recirculating oil vapor ensures emissions compliance without venting to the atmosphere.

  • Key Features:
  • Highly Efficient Oil Separator: Strategically positioned 4 chamber baffle system maximizes oil/air separation and minimizes oil droplets in the intake tract.
  • Integrated Dipstick: Knurled and black anodized oil dipstick simplifies oil volume inspection.
  • Reservoir: Available in 6oz or 8oz capacity with a 1/4" NPT drain plug fitting.
  • Serviceable: Easily removable baffle plates and drain plug for cleaning.
  • Easy/Customizable Installation: Combine with the ECS Universal Bracket Kit for simplified installation and adjustable mounting locations.
  • Leak-Free Fittings: Machined -10AN ORB (O-Ring Boss) fittings available for secure connections (fittings sold separately).
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Genuine BMW Crankcase Vent Valve - E39 540i - E38 740i 740il 96-01 - ...
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Genuine BMW - Corporate Logo
T#:2811
Part#: 11617501563K
In Stock
$ 117.99 USD
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$ 117.99 USD
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When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes and poor idle. This crankcase vent valve ( also know as Oil separator valve or PCV ) fits E39 540i 97-03 E38 740i 96-01 E31 840ci 96-98.

This kit includes the following parts:
1 x 11617501563 - Intake Manifold Rear Cover with Oil Separator Valve
1 X Rear Intake Manifold Gasket

This item fits the following BMWs:
1997-2003 E39 BMW 540i
1996-2001 E38 BMW 740i 740il
1996-1998 E31 BMW 840ci
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Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L ...
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Bavarian Autosport - Corporate Logo
T#:640206
Part#: 11617501563
In Stock
Sale - Save 20% $ 47.99

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

$ 38.39 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 47.99

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

$ 38.39 USD
Free Shipping on orders $49 and up
An integral part of the emissions system, the PCV valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes, and poor idle. 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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Genuine BMW CCV Connector
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Genuine BMW - Corporate Logo
T#:32260
Part#: 11151747976
Ships in 4 Business Days
6% off MSRP $ 47.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 44.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 47.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 44.99 USD
Free Shipping on orders $49 and up


Genuine BMW Connector -
This item fits the following BMW Chassis:
E34,E38,E39

Fits BMW Engines including:
M60,M62

Genuine BMW Crank Case Vent Valve Kit - E31 840Ci, E38 740i/iL, E39 5...
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Genuine BMW - Corporate Logo
T#:377891
Part#: 11617501563KT1
In Stock
$ 144.99

This product was last offered at the strikethrough price on
03-04-2026

$ 137.99 USD
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$ 137.99 USD
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Genuine BMW Valve Cover Breather Valve - Cylinders 1-6 - E32 750iL, E...
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Genuine BMW - Corporate Logo
T#:19162
Part#: 11151718713
Ships in 2 Business Days
3% off MSRP $ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 33.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 33.99 USD
Free Shipping on orders $49 and up


Genuine BMW Volume Control Valve - Zyl.1-6

Fits BMW Engines including:
M70,S70



Return Pipe - E31
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Genuine BMW - Corporate Logo
T#:68052
Part#: 37131159539
Ships in 5 Business Days
3% off MSRP $ 67.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 65.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 67.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 65.99 USD
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Genuine BMW Return Pipe - M12X1

Return Pipe - E31
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Genuine BMW - Corporate Logo
T#:68053
Part#: 37131159544
Ships in 8 Business Days
2% off MSRP $ 63.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 62.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 63.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 62.99 USD
Free Shipping on orders $49 and up


Genuine BMW Return Pipe - M10X1

Bav Auto Intake Manifold Cover w/ PCV Valve - BMW E31 E32 E34 E38 M6...
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Bavarian Autosport - Corporate Logo
T#:639843
Part#: 11617501562
Special Order: No Guaranteed ETA
Sale - Save 15% $ 59.99

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

$ 50.99 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 59.99

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

$ 50.99 USD
Free Shipping on orders $49 and up
An integral part of the emissions system, the PVC valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. Often split from underhood heat and age, this vents excess oil into the engine compartment. 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.
Show More Show Less

Genuine BMW Mounting Grommet
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Genuine BMW - Corporate Logo
T#:360723
Part#: 13411733217
In Stock
$ 17.86 USD
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$ 17.86 USD
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Elring Crank Case Vent Valve Gasket - M60 M62
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Elring - Corporate Logo
T#:362757
Part#: 11611729728
In Stock
$ 7.13

This product was last offered at the strikethrough price on
06-03-2026

$ 6.11 USD
Free Shipping on orders $49 and up
$ 6.11 USD
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This gasket seals the PCV valve to the valve cover. If this leaks, you maybe experience poor running conditions or check engine lights. Replace your leaking seal with a new Elring gasket to ensure long lasting reliability. 

Elring is one of the biggest OEM names in the manufacturing of high quality gaskets that are available for very affordable prices. Elring has supplied many automotive names for years with the gaskets that seal your car's components from day 1 so you can rest assured that these components will last for a long time to come!

Fits the following BMW engines:
M60 3.0L 4.0L
M62 4.4L

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Victor Reinz Oil Separator O-Ring - E31, E32, E34, E38, E39 ...
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Victor Reinz - Corporate Logo
T#:19104
Part#: 11151747978
Ships in 1 Business Day
$ 5.69

This product was last offered at the strikethrough price on
06-05-2026

$ 5.68 USD
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$ 5.68 USD
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O-RING 11151747978 Manufactured by Reinz


Kayser Oil Separator O-Ring - E31, E32, E34, E38, E39
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Kayser - Corporate Logo
T#:1195920
Part#: 11151747978
Ships in 1-2 days
$ 5.99

This product was last offered at the strikethrough price on
05-07-2026

$ 4.99 USD
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$ 4.99 USD
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Seals the vent pipe to the oil separator
Genuine BMW Sound Absorber - 11611742324 - E34
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Genuine BMW - Corporate Logo
T#:36425
Part#: 11611742324
Ships in 8 Business Days
2% off MSRP $ 169.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 165.99 USD
Free Shipping
2% off MSRP
$ 169.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 165.99 USD
Free Shipping


Genuine BMW Sound Absorber -
This item fits the following BMW Chassis:
E34

Fits BMW Engines including:
M60


Intake Manifold Cover (PCV)
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We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:594546
Part#: 11617501562
Special Order: No Guaranteed ETA
$ 55.99 USD
Free Shipping on orders $49 and up
An integral part of the emissions system, the PVC valve lets the crank case breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. Often split from underhood heat and age, this vents excess oil into the engine compartment. Replace it now.
Show More Show Less