Oil Separation & Breather System for BMW 3 Series E90 (2006-2011)

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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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Genuine BMW - Corporate Logo
T#:376819
Part#: 11617561408KT2
Ships in 1-2 days
$ 225.99

This product was last offered at the strikethrough price on
07-06-2026

$ 222.99 USD
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$ 222.99 USD
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Crankcase Ventilation Valve
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:48125821
Part#: 11127803790
Ships on Feb 24, 2027
Sale - Save 24% $ 15.99

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

$ 12.23 USD
Free Shipping on orders $49 and up
Sale - Save 24%
$ 15.99

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

$ 12.23 USD
Free Shipping on orders $49 and up

Ensure your BMW engine runs clean and efficiently with this Crankcase Breather Valve Diaphragm Spring and Cap (11127803790).

A direct-fit replacement for the original BMW breather (OE 11127803790 / 11-12-7-803-790), this valve maintains proper crankcase pressure, reduces oil buildup, and promotes smooth engine performance.

Constructed from durable, high-quality materials and engineered to OEM specifications, it installs easily without any modifications.

Ideal for maintenance, resolving crankcase pressure issues, or restoring your engine’s ventilation system, this breather valve delivers reliable performance and helps protect your BMW for years to come.

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Genuine BMW - Corporate Logo
T#:15009
Part#: 13717560227
Ships in 1-2 days
4% off MSRP $ 231.99

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

$ 221.99 USD
Free Shipping
4% off MSRP
$ 231.99

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

$ 221.99 USD
Free Shipping

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.


Genuine BMW Heater Element
This item fits the following BMW Chassis:
E82 1M Coupe,E71 X6,E82,E89 Z4,E90,E92,E93,F01,F02

Fits BMW Engines including:
N54,N54T
 

 

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Genuine BMW - Corporate Logo
T#:32278
Part#: 11157547820
Special Order: No Guaranteed ETA
4% off MSRP $ 79.99

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

$ 76.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 79.99

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

$ 76.99 USD
Free Shipping on orders $49 and up


Genuine BMW Vacuum Pipe -
This item fits the following BMW Chassis:
E82,E90,E92,E93

Fits BMW Engines including:
N51


Oil Separator Vent Hose
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:53326231
Part#: 11617522933
In Stock
New Item
Sale - Save 15% $ 23.99

This product was last offered at the strikethrough price on
09-16-2026

$ 20.39 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 23.99

This product was last offered at the strikethrough price on
09-16-2026

$ 20.39 USD
Free Shipping on orders $49 and up
Febi - Corporate Logo
T#:38452821
Part#: 11157527570
Special Order: No Guaranteed ETA
$ 93.99 USD
$ 93.99 USD
For your BMW's optimal performance, ensure the functionality of the hose connecting the oil dipstick to the crankcase vent valve. Positioned below the intake manifold, this hose is susceptible to clogging with oil film and condensation, leading to potential failure over time. Cracks and swelling in old hoses can result in oil and vacuum leaks, compromising engine performance.
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