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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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CCV/PCV Breather Hoses (17)

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Bremmen Crankcase Vent Hose - E60 E70 E82/88 E9X N52 3.0L

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T#:640155

Part#: 11157559528

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05-03-2026

$ 39.16 USD

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This valve cover vent hose helps to vent the crankcase fumes on BMW's with the N51 / N52 6 cylinder engines. If replacing the valve cover, we recommend purchasing this item as well as it often will break while removing it from the valve cover.

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Genuine BMW PCV Non-return Valve - E9X M3, E6X M5 M6

T#:36640

Part#: 11617836553

In Stock

14% off MSRP $ 63.76

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

$ 55.03 USD

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14% off MSRP

$ 63.76

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$ 55.03 USD

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The PCV system removes engine blow-by gases and flushes the crankcase with fresh air. PCV system problems result in numerous and sometimes severe problems including multiple oil leaks, contamination of multiple sensors and catalytic converters, deposit build-up in the air intake passages, and failed emissions tests.

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Blow-By Vent Hose

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T#:30629687

Part#: 11157553949

In Stock

Sale - Save 20% $ 43.99

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

$ 35.08 USD

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Valve Cover Vent Hose - N51 N52 - E9x, E60, E70, Z4, E82

T#:32279

Part#: 11157559528

Ships in 1-2 days

16% off MSRP $ 108.99

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$ 91.99 USD

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16% off MSRP

$ 108.99

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

$ 91.99 USD

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This valve cover vent hose helps to vent the crankcase fumes on BMW's with the N51 / N52 6 cylinder engines. If replacing the the valve cover we recommend purchasing this item as well as it often will break while removing it from the valve cover.

This item fits the following BMWs:
2008-2013 E82 BMW 128i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive
2006-2010 E83 BMW X3 3.0i X3 3.0si
2007-2013 E70 BMW X5 3.0si X5 xDrive30i
2006-2008 E85 BMW Z4 3.0i Z4 3.0si
2009+ E89 BMW Z4 sDrive30i

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Genuine BMW Crankcase Pressure Regulator Valve - E9X M3 S65

T#:180985

Part#: 11157848155

Ships in 1-2 days

2% off MSRP $ 479.99

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

$ 469.99 USD

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2% off MSRP

$ 479.99

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

$ 469.99 USD

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This is a genuine BMW replacement crankcase pressure regulator valve that is attached to the top of the valve covers. This is often also referred to as an oil separator.

Oil Separator Vent Hose

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T#:33746535

Part#: 11617559530

In Stock

Sale - Save 20% $ 42.99

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

$ 34.26 USD

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$ 42.99

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Crankcase Ventilation Valve With Gasket

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T#:48125820

Part#: 11127809512

Ships on Dec 2, 2026

Sale - Save 21% $ 61.99

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

$ 48.95 USD

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Restore proper engine ventilation with this premium replacement Crankcase Breather Valve (11127809512).

Designed to match the performance of the original BMW unit (OE 11-12-7-809-512 / 11-12-7-803-790), this valve maintains correct crankcase pressure, helps prevent oil buildup, and supports clean, efficient engine operation.

Crafted from high-quality, long-lasting materials and shaped to replicate the factory design, it installs easily in place of the stock breather without any modifications required.

Whether you’re addressing pressure-related drivability issues, refreshing your engine’s ventilation system, or performing preventative maintenance, this breather valve provides dependable performance and protects your BMW’s engine for the long haul.

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Oil Separator Valve

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T#:8677203

Part#: 11617531423

In Stock

Sale - Save 4% $ 69.99

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

$ 67.20 USD

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Genuine BMW Extraction Line - E60 E91 E90 E91 N52 3.0L, Z4 N52 3.0L ...

T#:22212

Part#: 11157537701

In Stock

Sale - Save 10% $ 58.99

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

$ 52.99 USD

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$ 58.99

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

$ 52.99 USD

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Genuine BMW Extraction Line -
This item fits the following BMW Chassis:
E85,E86,E90

Fits BMW Engines including:
N52

Extraction Line

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T#:30629688

Part#: 11157537701

In Stock

Sale - Save 21% $ 28.99

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

$ 22.84 USD

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$ 28.99

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Vacuum Pipe

T#:37159

Part#: 11667575774

Ships in 1-2 days

4% off MSRP $ 44.99

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

$ 42.99 USD

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4% off MSRP

$ 44.99

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

$ 42.99 USD

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Genuine BMW Vacuum Pipe -
This item fits the following BMW Chassis:
E71,E82,E90,E92,E93,F06,F10,F12,F13,F15,F16

Fits BMW Engines including:
N55

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Crankcase Vent Hose - E9X 335i /xi, E82 135i, E60 535i/Xi

T#:11946

Part#: 11157553949

In Stock

4% off MSRP $ 89.95

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$ 85.92 USD

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4% off MSRP

$ 89.95

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$ 85.92 USD

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This hose directs the oil & combustion vapors from the valve cover and directs them to the intake manifold where they are put through combustion again in order to reduce emissions. When installing one of our N54 Oil Catch Cans the connections on this hose will often break. We recommend replacing this hose at the same time as your catch can.
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.

This item fits the following BMWs:
2008-2010 E82 BMW 135i
2011+ E82 BMW 1M Coupe
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2007-2010 E93 BMW 335i - Convertible
2004-2010 E60 BMW 535i 535xi 535i xDrive
2009+ Z4 BMW Z4 sDrive35i Z4 sDrive35is

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Crankcase Oil Separator - E90 325i/330i, E60 525i/530i, E85 Z4 3.0i/3...

T#:13027

Part#: 11617531423

Ships in 1-2 days

6% off MSRP $ 148.99

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

$ 139.99 USD

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6% off MSRP

$ 148.99

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$ 139.99 USD

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The BMW N52 engine was deisgned with a crankcase vent system that relies on a heated oil separator valve to separate vapor from the liquid oil. Under ideal circumstances, the oil vapor would pass back into the intake and get burned up during normal combustion. The liquid oil would follow a path back down into the oil pan and be reused. This system is environmentally friendly but plagued with problems. The heating elements can fail or solid oil and carbon particles can block the oil separator valve. With no escape, the oil will continue to pool and collect in the valve cover or make its way into the combustion chamber leading to excessive oil consumption, blue smoke from the exhaust, idle and running issues. These issues are worse in colder climates where the freezing temperatures create a oil sludge condition that is impossible to clear. Thankfully, the CCV is replaceable on the early N52 engines (2006) and should be inspected during a major service and any time the valve cover is off. Oil can also back up into the throttle body, which is easier to check than the oil separator itself. Later N52 engines do not have a serviceable oil vent as it is integrated into the valve cover and not a separate part.

The oil separator can be replaced on its own but for a complete service we also recommend replacing the oil separator hoses and cleaning the valve cover. Any valve cover or intake manifold work should include a new oil separator valve.

This item fits the following BMWs:
2006-2011 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2012 E91 BMW 325xi - Wagon
2006-2007 E60 BMW 525i 525xi 530i 530xi
2006-2008 E85 BMW Z4 3.0i Z4 3.0si

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Genuine BMW Oil Separator Service Kit - E9X M3 S65

T#:340670

Part#: 11157848155KT

Ships in 1-2 days

$ 1,085.99 USD

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$ 1,085.99 USD

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The crankcase breather, or also commonly called the PCV or oil separator, allows the crankcase to expel air without losing any oil. When failing, the PCV can cause misfires and a rough running commonly experienced at idle. This kit allows you to service your breather system and keep your vehicle's emissions system in top shape and running great.

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Crankcase Oil Separator Hose - E9x, E60, E85 with N52 engine ...

T#:20631

Part#: 11157522931

In Stock

Sale - Save 19% $ 154.99

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

$ 125.99 USD

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Sale - Save 19%

$ 154.99

This product was last offered at the strikethrough price on
05-02-2026

$ 125.99 USD

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This is the oil separator hose that connects the crank case oil separator to the oil sump pipe for BMW's with the N52 6 cylinder engine.
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.

This item fits the following BMWs:
2006-2011 E90 BMW 325i 325xi 330i 330xi - Sedan
2006-2012 E91 BMW 325xi - Wagon
2006-2007 E60 BMW 525i 525xi 530i 530xi
2006 E85 BMW Z4 3.0i Z4 3.0si

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Genuine BMW Crank Case Vent Hose - E90 E92 E93 M3

T#:36659

Part#: 11617838288

In Stock

6% off MSRP $ 71.99

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

$ 67.99 USD

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6% off MSRP

$ 71.99

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

$ 67.99 USD

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Genuine BMW Vent Hose -
This item fits the following BMW Chassis:
E90,E92,E93

Fits BMW Engines including:
S65

Vacuum Pipe - E90, E92, E93

T#:62439

Part#: 34302283606

In Stock

Sale - Save 10% $ 91.99

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

$ 82.99 USD

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Sale - Save 10%

$ 91.99

This product was last offered at the strikethrough price on
05-02-2026

$ 82.99 USD

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

Vacuum Pipe - E90, E91, E92, E93

T#:37145

Part#: 11667551621

Ships in 1-2 days

4% off MSRP $ 44.99

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

$ 42.99 USD

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4% off MSRP

$ 44.99

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

$ 42.99 USD

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

Fits BMW Engines including:
N51,N52N

Vacuum Pipe - E90, E92, E93

T#:36663

Part#: 11617838382

Ships in 5 Business Days

5% off MSRP $ 55.99

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

$ 52.99 USD

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5% off MSRP

$ 55.99

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

$ 52.99 USD

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

Fits BMW Engines including:
S65

Bremmen Parts O Ring

10X Entries Into Our F80 M3 Sweepstakes

T#:558205

Part#: 11617533329

In Stock

Sale - Save 30% $ 6.99

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

$ 4.89 USD

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$ 4.89 USD

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Seals the PCV angle connector to the intake manifold

Genuine BMW Emissions Service Kit

T#:376819

Part#: 11617561408KT2

Ships in 1-2 days

$ 225.99

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

$ 210.99 USD

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$ 210.99 USD

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Vacuum Pipe - E82, E84, E88, E90, E92, E93

T#:37172

Part#: 11667609055

Ships in 1-2 days

4% off MSRP $ 44.99

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

$ 42.99 USD

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4% off MSRP

$ 44.99

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

$ 42.99 USD

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

Fits BMW Engines including:
N55

Crankcase Ventilation Valve

10X Entries Into Our F80 M3 Sweepstakes

T#:48125821

Part#: 11127803790

Ships on Feb 22, 2027

Sale - Save 24% $ 15.99

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

$ 12.23 USD

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Sale - Save 24%

$ 15.99

This product was last offered at the strikethrough price on
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$ 12.23 USD

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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 Fuel System Heater Element 13717560227

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

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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

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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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Vacuum Pipe - E82, E88, E90, E92, E93

T#:32278

Part#: 11157547820

Special Order: No Guaranteed ETA

4% off MSRP $ 71.99

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

$ 68.99 USD

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4% off MSRP

$ 71.99

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

$ 68.99 USD

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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

T#:53326231

Part#: 11617522933

In Stock

Sale - Save 50% $ 22.99

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

$ 11.50 USD

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Sale - Save 50%

$ 22.99

This product was last offered at the strikethrough price on
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$ 11.50 USD

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Oil Separation & Breather System
- CCV/PCV Breather Hoses (17)

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