BMW Crankcase Vent, PCV, and Oil Separator Systems for BMW 5 Series E39 (1996-2003)

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 have 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.

Turner Baffled Oil Catch Can Kit - 10oz
Turner Motorsport - Corporate Logo
T#:398786
Part#: 022798TMS01-09KT
In Stock
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Turner Baffled Oil Catch Can Kit - 8oz
Turner Motorsport - Corporate Logo
T#:398784
Part#: 022798TMS01-07KT
In Stock
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Sale - Save 10% $189.95
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Crankcase Oil Separator Repair Kit - E46 E39 X5
Packaged by Turner - Corporate Logo
T#:337996
Part#: 11617534237
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Starting at $85.30
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Genuine BMW Crankcase Vent Valve - E36 E39 Z3
Genuine BMW - Corporate Logo
T#:337967
Part#: 11151703484
In Stock
Sale - Save 37% $126.20
Starting at $78.99
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Crankcase Vent Hose - From Valve Cover to Oil Separator - E36 E39 Z3
Genuine BMW - Corporate Logo
T#:6690
Part#: 11151703775
In Stock
16% off MSRP $41.50
$34.89
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16% off MSRP $41.50
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Turner Baffled Oil Catch Can Kit - 6oz
Turner Motorsport - Corporate Logo
T#:398782
Part#: 022798TMS01-05KT
In Stock
Sale - Save 10% $189.95
$170.95
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Billet 1/2" Check Valve - N54
Vargas Turbo Technologies - Corporate Logo
T#:557954
Part#: VTT-CHECK-1
Direct Ship
$25.00
$25.00
Flapper Delete Fitting - N54
Vargas Turbo Technologies - Corporate Logo
T#:557962
Part#: VTT-FLAPPER-DELE
Direct Ship
$40.00
$40.00

PCV Adapter Fitting N54
Vargas Turbo Technologies - Corporate Logo
T#:557961
Part#: VTT-PCV-ADAPTER
Direct Ship
$79.00
$79.00

Crankcase Ventilation Dipstick Hose
URO - Corporate Logo
T#:359570
Part#: 11157532629
Ships on Dec 5, 2018
$8.09
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