Oil Separation & Breather System for BMW X Series E83 (2004-2010)

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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 (1)

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Crankcase Oil Separator Repair Kit - E83 X3 2.5i 3.0i 2004-2006 ...

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T#:2898

Part#: 11617533400-E83

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$ 400.21 USD

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This Crankcase Vent / Oil Separator Repair Kit includes the updated oil separator valve, oil dipstick guide tube and hoses. Suitable for cold weather applications. This kit fits E83 X3 2.5i X3 3.0i 2004-2006.

This item fits the following BMWs:
2004-2006 E83 BMW X3 2.5i X3 3.0i

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URO PCV Breather Hose Kit - E39, E46, E83

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T#:592719

Part#: BMM54PCVKIT

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$ 117.99 USD

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Comes with everything needed to refresh the PCV System!

Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4

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T#:641646

Part#: 11617501566S1

In Stock

Sale - Save 15% $ 95.99

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

$ 81.59 USD

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Sale - Save 15%

$ 95.99

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

$ 81.59 USD

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BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate. Replace all the components of the oil separator system together to prevent damage to all the aspects of your engine. Level 1 kit includes the following; Oil separator Hose from oil separator to dipstick tube Hose from oil separator to valve cover Hose from intake manifold back to the connector hose Hose from oil separator up to the intake manifold

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

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T#:32279

Part#: 11157559528

In Stock

5% 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.

$ 103.99 USD

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5% 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.

$ 103.99 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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Crankcase Ventilation Hose Kit M54 Engine

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T#:379190

Part#: 11617504535K

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$ 79.99 USD

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Turner Motorsport presents the Crankcase Ventilation System Refresh Kit for BMW owners experiencing malfunctioning or aged CCV systems. This comprehensive kit includes all necessary hoses to complete a refresh, ensuring optimal performance and reliability for your BMW's CCV system.

Addresses malfunctioning CCV systems
Ensures proper ventilation of the crankcase
Comprehensive kit includes all necessary hoses
Restores performance and reliability
Compatible with various BMW models

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Genuine BMW Crankcase Pressure Regulator Valve

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T#:367709

Part#: 11617501566

Ships in 1 day

6% off MSRP $ 102.99

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

$ 96.99 USD

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6% off MSRP

$ 102.99

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

$ 96.99 USD

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BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate. Replace this and all the other components of the oil separator system to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable.

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"Cold Climate" Crankcase Pressure Regulator Valve

Superior performance for both warm and cold climates

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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T#:376770

Part#: 11617533400

Ships in 1 Business Day

$ 70.99

This product was last offered at the strikethrough price on
04-10-2026

$ 40.99 USD

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$ 40.99 USD

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Commonly referred to as the "oil separator" or PCV

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Oil Separation & Breather System for BMW X Series E83 (2004-2010)

Sub-Categories

Crankcase Oil Separator Repair Kit - E83 X3 2.5i 3.0i 2004-2006 ...

URO PCV Breather Hose Kit - E39, E46, E83

Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4

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

Crankcase Ventilation Hose Kit M54 Engine

Genuine BMW Crankcase Pressure Regulator Valve

"Cold Climate" Crankcase Pressure Regulator Valve

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