Oil Separation & Breather System for BMW 7 Series E38 (1995-2001)

Clear BMW chassis

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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CCV/PCV Breather Hoses (5)

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Bav Auto Crank Case Ventilation Valve - E31 E38 E39 M62 4.4L ...

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

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Sale - Save 20%

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

$ 38.39 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. 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

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

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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

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

Fits BMW Engines including:
M60,M62

Genuine BMW Crank Case Breather Pipe - E38 M62 4.4L, E39 M62 4.4L ...

For vehicles with production date from 09/1998

T#:6691

Part#: 11151705301

Ships in 3 Business Days

2% off MSRP $ 51.99

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

$ 50.99 USD

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2% off MSRP

$ 51.99

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

$ 50.99 USD

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Genuine BMW Vent Pipe -
This item fits the following BMW Chassis:
E38,E39

Fits BMW Engines including:
M62

Genuine BMW Vacuum Hose - E38 740i 740iL

T#:36351

Part#: 11611704934

Ships in 3 Business Days

2% off MSRP $ 46.99

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

$ 45.99 USD

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Qty

2% off MSRP

$ 46.99

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

$ 45.99 USD

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Genuine BMW Hose -
This item fits the following BMW Chassis:
E38

Fits BMW Engines including:
M62

Bav Auto Intake Manifold Cover w/ PCV Valve - BMW E31 E32 E34 E38 M6...

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

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Qty

Sale - Save 15%

$ 59.99

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

$ 50.99 USD

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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