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CCV Oil Separator System

BMWs oil separator and crankcase ventilation system is excellent at what it does when properly maintained. Always inspect any visible hoses when you are under the hood and follow the manufacturers replacement schedule.
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ECS - Corporate Logo
T#:4154602
Part#: 090745ECS09
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06-14-2026

$ 79.49 USD
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The OEM plastic Positive Crankcase Ventilation (PCV) valve does not hold pressure well, even when brand new. This means that when you are in boost conditions, the highly pressurized PCV valve leaks charged air back into the crankcase. Depending on the condition of your PCV valve, this can range from irritating to dangerous. Additionally, if your valve cover is cracked, loose, or has a bad gasket, you are likely experiencing a pressure leak either internally or externally, as well as potential oil loss issues. ECS Tuning now offers a solid aluminum PCV valve upgrade designed to address these issues by preventing leaks and outlasting the standard BMW-designed PCV! The internal components of this aluminum PCV valve fit tighter than the OE design and can withstand significantly more abuse, perfect for high mileage N54s, N54s that have been tuned, or N54s with upgraded turbos (larger twin or big single turbo builds). This may not be your last PCV Valve, but it will certainly outlast both the Genuine BMW and other common aftermarket alternatives!
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Crankcase Pressure Regulator Valve
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Hengst - Corporate Logo
T#:22064591
Part#: AS830M
Ships on Aug 10, 2026
Sale - Save 27% $ 35.99

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

$ 26.31 USD
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Sale - Save 27%
$ 35.99

This product was last offered at the strikethrough price on
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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. As long as you have everything off, you can rest assured that new parts will last and be reliable.
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Bremmen Parts - Corporate Logo
T#:30629663
Part#: 11157637521
In Stock
Sale - Save 10% $ 50.99

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

$ 45.89 USD
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Bremmen Parts - Corporate Logo
T#:15511828
Part#: 11617533400
In Stock
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This product was last offered at the strikethrough price on
05-03-2026

$ 44.51 USD
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$ 44.99

This product was last offered at the strikethrough price on
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$ 44.51 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. As long as you have everything off, you can rest assured that new parts will last and be reliable. Don't forget to order a valve cover gasket to make your separator change easier.
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Genuine BMW - Corporate Logo
T#:348228
Part#: 11157532629
In Stock
Sale - Save 8% $ 38.99

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$ 35.88 USD
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$ 38.99

This product was last offered at the strikethrough price on
06-15-2026

$ 35.88 USD
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Genuine BMW - Corporate Logo
T#:12913
Part#: 11157840446
In Stock
Sale - Save 8% $ 155.01

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

$ 143.38 USD
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$ 143.38 USD
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This Genuine BMW oil separator helps to remove oil from the air vented from the crankcase via a hose from the valve cover. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes and poor idle. This crankcase vent valve is also know as Oil separator valve or PCV.

This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW Z3 M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe
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Packaged by Turner - Corporate Logo
T#:555298
Part#: 11617501566KT6
In Stock
Sale - Save 19% $ 181.99

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

$ 147.02 USD
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Sale - Save 19%
$ 181.99

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

$ 147.02 USD
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The plastic hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the plastic components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

This kit includes the needed hoses, oil separator, mounting grommet, and hardware.

Fits the following BMWs:
2000-2003 E39 BMW 530i

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Genuine BMW - Corporate Logo
T#:2811
Part#: 11617501563K
In Stock
$ 117.99 USD
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$ 117.99 USD
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When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes and poor idle. This crankcase vent valve ( also know as Oil separator valve or PCV ) fits E39 540i 97-03 E38 740i 96-01 E31 840ci 96-98.

This kit includes the following parts:
1 x 11617501563 - Intake Manifold Rear Cover with Oil Separator Valve
1 X Rear Intake Manifold Gasket

This item fits the following BMWs:
1997-2003 E39 BMW 540i
1996-2001 E38 BMW 740i 740il
1996-1998 E31 BMW 840ci
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Vent Hose
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:3136224
Part#: 11157612996
In Stock
$ 36.85 USD
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Vargas Turbo Technologies - Corporate Logo
T#:557954
Part#: VTT-CHECK-1
Ships in 1 Business Day
$ 36.99 USD
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$ 36.99 USD
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Vargas Turbo has you covered when you are installing a custom turbo setup. With all of the adapters you need and all the valves necessary, the only real limiting factor is your imagination!

This is a 1/2" (fits -8AN hos perfectly as well) CNC Billet check valve that can be used for a variety of uses including a vacuum/boost check valve when removing the stock PCV system, and still wanting to run the vacuum to the crankcase. Rated at over 100 psi, with a cracking psi of .25psi.

This part fits the following BMW engines:
2006-2012 N54

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Febi - Corporate Logo
T#:381796
Part#: 11617533400
Ships in 1 Business Day
$ 72.99

This product was last offered at the strikethrough price on
05-07-2026

$ 61.99 USD
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$ 61.99 USD
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Commonly referred to as the "oil separator" or PCV
URO Crankcase Pressure Regulator Valve - E36, E39, Z3
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URO - Corporate Logo
T#:373129
Part#: 11151703484
Ships in 1 Business Day
$ 60.99 USD
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$ 60.99 USD
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Commonly referred to as the "oil separator"


Crankcase Vent Valve - Rein - BMW E39 M5 E52 Z8
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:38229086
Part#: 11151406789
Ships in 3 Business Days
$ 44.99 USD
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Crankcase Vent Valve - Rein - BMW E39 M5 E52 Z8 is a crucial component for maintaining proper crankcase ventilation and preventing harmful oil buildup in the engine. Over time, the vent valve can become clogged with oil, leading to excessive crankcase pressure, poor engine performance, and increased carbon deposits. A failing valve can result in rough idling, misfires, and blue smoke from the exhaust. Replacing the crankcase vent valve at regular intervals ensures optimal engine efficiency and longevity.

  • Prevents oil-rich vapors from entering the intake system
  • Reduces the risk of carbon buildup and engine misfires
  • Direct-fit replacement for BMW E39 M5 and E52 Z8 models
  • Ensures proper crankcase ventilation for optimal performance
  • Helps eliminate excessive crankcase pressure and oil leaks
  • Manufactured to meet or exceed OEM quality standards
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URO Premium Crank Case Vent Hose - N55
2X Entries For Our G87 M2 Sweepstakes!
URO Premium - Corporate Logo
T#:1918450
Part#: 11127590163
Ships in 1 Business Day
$ 33.99 USD
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$ 33.99 USD
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This item fits the following BMW Chassis: E82,E90,E92,E93,F06,F15,F16 Fits BMW Engines including: N55
Crankcase Vent Valve
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:555938
Part#: 11157501567
Ships in 1 Business Day
$ 27.99 USD
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Rein Crankcase Vent Hose (3-Way Hose)
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:17771573
Part#: 11157581815
Ships in 3 Business Days
$ 41.99 USD
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Resistant to heat, salt, and road debris, Rein hoses are identical to OE and are more affordable.

Vargas Turbo Technologies - Corporate Logo
T#:557962
Part#: VTT-FLAPPER-DELE
In Stock
$ 57.99 USD
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$ 57.99 USD
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Vargas Turbo has you covered when you are installing a custom turbo setup. With all of the adapters you need and all the valves necessary, the only real limiting factor is your imagination!

The VTT PCV Flapper delete is used to get rid of the factory flapper, and add a -10 fitting on N54 powered vehicles. This will allow you to run a single or dual external catch can, or your own custom set up.

This fitting is made from 6061-T6 aircraft aluminum anodized black and comes with O-ring, and a stainless steel holding clip.

This part fits the following BMW engines:
2006-2012 N54

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Rein Crankcase Breather Valve | BMW E39 E52 S62 5.0L Engine
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:38195432
Part#: 11151406788
Ships in 3 Business Days
$ 34.99 USD
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Rein Crankcase Breather Valve | BMW E39 E52 S62 5.0L Engine is a high-quality replacement designed to address common crankcase ventilation issues in BMW engines. A failing breather valve can lead to excessive oil consumption, vacuum leaks, and even freezing in colder temperatures, causing performance issues and potential engine damage. This direct-fit replacement effectively regulates the removal of oil vapors, preventing system failures and ensuring smooth engine operation. For optimal results, it is recommended to replace all related oil separator components simultaneously.

  • Prevents oil separator freezing and vacuum leaks in cold weather
  • Ensures proper crankcase ventilation to avoid excessive oil consumption
  • Direct-fit replacement for BMW E39 and E52 S62 5.0L engines
  • Helps maintain optimal engine performance and efficiency
  • Manufactured to meet or exceed OEM quality standards
  • Recommended to replace with other oil separator components for long-term reliability
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Crankcase Pressure Regulator Valve
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:594300
Part#: 11151703484
In Stock at Vendor
$ 50.99 USD
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$ 50.99 USD
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BMW has an issue with oil separators freezing in cold weather if the engine is not fully warmed up during driving. Common symptoms are a howling noise followed by oil leaks.
Vargas Turbo Technologies - Corporate Logo
T#:597641
Part#: VTT-CHECK-2
Ships in 2 Business Days
$ 36.99 USD
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$ 36.99 USD
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Vargas Turbo has you covered when you are installing a custom turbo setup. With all of the adapters you need and all the valves necessary, the only real limiting factor is your imagination!

Vargas Turbo Technologies - Corporate Logo
T#:642075
Part#: VTT-10ORB
Ships in 10 Business Days
$ 23.99 USD
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$ 23.99 USD
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Genuine BMW - Corporate Logo
T#:31524
Part#: 11127590163
Ships in 2 Business Days
4% 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.

$ 45.99 USD
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4% 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.

$ 45.99 USD
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Genuine BMW Vent Hose -
This item fits the following BMW Chassis:
E82,E90,E92,E93,F06,F15,F16

Fits BMW Engines including:
N55

Genuine BMW - Corporate Logo
T#:216970
Part#: 11158647298
Ships in 1-2 days
4% off MSRP $ 223.99

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

$ 213.99 USD
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4% off MSRP
$ 223.99

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

$ 213.99 USD
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Genuine Bmw Connecting Line - 11158647298
Genuine BMW - Corporate Logo
T#:19162
Part#: 11151718713
Ships in 2 Business Days
$ 34.99 USD
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Genuine BMW Volume Control Valve - Zyl.1-6

Fits BMW Engines including:
M70,S70



Genuine BMW - Corporate Logo
T#:19233
Part#: 11617533398
Ships in 1-2 days
$ 47.99 USD
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$ 47.99 USD
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Genuine BMW ENGINE VENT PIPE
Genuine BMW - Corporate Logo
T#:36523
Part#: 11617547185
Ships in 1-2 days
4% 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.

$ 49.99 USD
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4% 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.

$ 49.99 USD
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Genuine BMW Vent Pipe - Zyl. 1-4
This item fits the following BMW Chassis:
E53 48IS,E53 X5,E63,E65

Fits BMW Engines including:
N62

Genuine BMW - Corporate Logo
T#:13027
Part#: 11617531423
Ships in 2 Business 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

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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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 - Corporate Logo
T#:22213
Part#: 11157567801
Ships in 1-2 days
4% off MSRP $ 184.99

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

$ 176.99 USD
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4% off MSRP
$ 184.99

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

$ 176.99 USD
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Genuine BMW Return Pipe -
This item fits the following BMW Chassis:
E85,E86,E90

Fits BMW Engines including:
N52


Genuine BMW - Corporate Logo
T#:32283
Part#: 11157567802
Ships in 2 Business Days
2% off MSRP $ 162.99

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

$ 158.99 USD
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2% off MSRP
$ 162.99

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

$ 158.99 USD
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Genuine BMW Return Pipe -
This item fits the following BMW Chassis:
E90

Fits BMW Engines including:
N52

Genuine BMW - Corporate Logo
T#:7025
Part#: 11617504535
Ships in 1-2 days
2% off MSRP $ 42.99

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

$ 41.99 USD
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2% off MSRP
$ 42.99

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

$ 41.99 USD
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Genuine BMW Connecting Line -
This item fits the following BMW Chassis:
E39,E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M52,M54


Genuine BMW - Corporate Logo
T#:215829
Part#: 11158647962
Ships in 1-2 days
5% off MSRP $ 417.99

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

$ 399.00 USD
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5% off MSRP
$ 417.99

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

$ 399.00 USD
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Genuine BMW Vent Pipe - 11158647962
Genuine BMW - Corporate Logo
T#:36649
Part#: 11617836946
Ships in 4 Business Days
5% off MSRP $ 57.99

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

$ 54.99 USD
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5% off MSRP
$ 57.99

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

$ 54.99 USD
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Genuine BMW Vent Hose - Zyl. 6-10
This item fits the following BMW Chassis:
E60 M5,E63 M6,E63

Fits BMW Engines including:
S85


Genuine BMW - Corporate Logo
T#:367590
Part#: 11157532649
Ships in 1-2 days
$ 39.99 USD
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$ 39.99 USD
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Genuine BMW - Corporate Logo
T#:36534
Part#: 11617549715
Ships in 1-2 days
6% off MSRP $ 212.99

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

$ 199.99 USD
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6% off MSRP
$ 212.99

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

$ 199.99 USD
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Genuine BMW Pressure Regulating Valve -
This item fits the following BMW Chassis:
E65

Fits BMW Engines including:
N73

Genuine BMW - Corporate Logo
T#:36535
Part#: 11617549716
Ships in 1-2 days
6% off MSRP $ 212.99

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

$ 199.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 212.99

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

$ 199.99 USD
Free Shipping on orders $49 and up


Genuine BMW Pressure Regulating Valve -
This item fits the following BMW Chassis:
E65

Fits BMW Engines including:
N73

Genuine BMW - Corporate Logo
T#:36524
Part#: 11617547186
Ships in 1-2 days
4% off MSRP $ 67.99

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

$ 64.99 USD
Free Shipping
4% off MSRP
$ 67.99

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

$ 64.99 USD
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Genuine BMW Vent Pipe - Zyl. 5-8
This item fits the following BMW Chassis:
E53 48IS,E53 X5,E63,E65

Fits BMW Engines including:
N51,N62



Genuine BMW - Corporate Logo
T#:377891
Part#: 11617501563KT1
In Stock
$ 144.99

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

$ 137.99 USD
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$ 137.99 USD
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Turner Motorsport - Corporate Logo
T#:221961
Part#: TMS221961
Ships in 2 Business Days
$ 482.99 USD
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$ 482.99 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 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 an oil sludge condition that is impossible to clear. The plastic hoses can become brittle and crack which leads to vacuum leaks and oil leaks. Thankfully, the CCV is replaceable on the early N52 engines (2006 and some 2007 models) 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.

This is a kit containing the oil separator, the vent hoses, and the intake manifold gaskets that are done during a typical oil separator replacement. Complete kit includes:
  • 11617531423, Genuine BMW oil separator
  • 11617559530, vent hose
  • 11157522931, oil separator hose
  • 11157567802, return hose
  • 11157537701, extraction hose
  • 11617547242, intake manifold gaskets (set of 6)
    The intake manifold must be removed to access the oil separator so new profile gaskets are included. We also recommend (but not required) a new oil separator fitting on the intake manifold because it's one of the heated elements that vaporizes the oil as it enters the intake.

    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 kit fits the following BMWs:
    10/2005+ E90 BMW 325xi 330xi - Sedan
    10/2005+ E91 BMW 325xi - Wagon
    10/2005+ E60 BMW 525xi 530xi
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    Genuine BMW - Corporate Logo
    T#:375194
    Part#: 11157840446KT1
    In Stock
    $ 392.99

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

    $ 390.99 USD
    Free Shipping
    $ 390.99 USD
    Free Shipping

    Genuine MINI - Corporate Logo
    T#:22215
    Part#: 11157612996
    Ships in 2 Business Days
    2% off MSRP $ 153.05

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

    $ 150.66 USD
    Free Shipping on orders $49 and up
    2% off MSRP
    $ 153.05

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

    $ 150.66 USD
    Free Shipping on orders $49 and up
    Genuine MINI VENT HOSE
    Fits BMW Engines including:
    N12,N16


    Genuine BMW - Corporate Logo
    T#:348665
    Part#: 11617559530OE
    Ships in 2 Business Days
    9% off MSRP $ 77.99

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

    $ 70.99 USD
    Free Shipping on orders $49 and up
    9% off MSRP
    $ 77.99

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

    $ 70.99 USD
    Free Shipping on orders $49 and up
    Kayser - Corporate Logo
    T#:398358
    Part#: 11157501567
    Ships in 1-2 days
    $ 54.99

    This product was last offered at the strikethrough price on
    05-07-2026

    $ 53.99 USD
    Free Shipping on orders $49 and up
    $ 53.99 USD
    Free Shipping on orders $49 and up
    Commonly called PCV valve

    Genuine BMW - Corporate Logo
    T#:375196
    Part#: 11157840446KT3
    In Stock
    $ 397.99

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

    $ 395.99 USD
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    $ 395.99 USD
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    Genuine BMW - Corporate Logo
    T#:376836
    Part#: 11151747066KT
    Ships in 4 Business Days
    $ 306.99 USD
    Free Shipping
    $ 306.99 USD
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    The hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the plastic components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

    This kit includes the needed hoses, oil separator, mounting grommet, and hardware.

    Fits the following BMWs:
    1996-09/1998 E39 BMW 540i

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    Rein Crank Case Vent Hose
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:17605208
    Part#: 11127590163
    In Stock
    $ 26.47 USD
    Free Shipping on orders $49 and up
    $ 26.47 USD
    Free Shipping on orders $49 and up
    Engine Crankcase Breather Hose from Rein is a more affordable option when you're in need. This connects to the ccv on the valve cover.

    Oil Separator Valve
    5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Hengst - Corporate Logo
    T#:22064583
    Part#: AS815M
    Ships on Aug 10, 2026
    $ 64.99 USD
    Free Shipping on orders $49 and up
    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.
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    Crankcase Oil Separator Valve - E46 E39 E60 X3 X5 Z3 Z4
    We Price Match - Give Us A Call or Chat!
    Febi - Corporate Logo
    T#:2855
    Part#: 11617501566
    Ships on Oct 14, 2026
    $ 48.99 USD
    Free Shipping on orders $49 and up
    $ 48.99 USD
    Free Shipping on orders $49 and up
    This Crankcase Oil Separator Valve fits BMWs with the M52tu or M54 6 cylinder engine including E46 323i 325i 328i 330i E39 525i 528i 530i E60 525i 530i X3 2.5i 3.0i X5 3.0i Z3 2.5 2.8 3.0i Z4 2.5i 3.0i. It is fairly common for this valve to become plugged with sludge which can create rough idle and excessive oil consumption.
    Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.

    This item fits the following BMWs:
    1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
    1999-2005 E46 BMW 325i 325ci 325xi - only with M54 engine
    1999-2003 E39 BMW 525i 528i 530i
    2004-2005 E60 BMW 525i 525xi 530i 530xi
    2004-2006 E83 BMW X3 2.5i X3 3.0i
    2000-2006 E53 BMW X5 3.0i
    1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8i Z3 3.0i
    2003-2006 E85 BMW Z4 2.5i Z4 3.0i
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    Bavarian Autosport - Corporate Logo
    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
    Free Shipping on orders $49 and up
    Sale - Save 15%
    $ 59.99

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

    $ 50.99 USD
    Free Shipping on orders $49 and up
    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.
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    Packaged by Turner - Corporate Logo
    T#:555299
    Part#: 11151406788KT3
    Back Ordered
    $ 326.99 USD
    Free Shipping
    $ 326.99 USD
    Free Shipping

    The rubber hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

    This kit includes the needed hoses, oil separator, mounting grommet, and hardware.

    Fits the following BMWs:
    1998-2003 E39 BMW M5

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    Rein Crank Case Ventilation Valve - Priced Each
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:17738377
    Part#: 11158647299
    In Stock
    $ 79.99

    This product was last offered at the strikethrough price on
    03-26-2026

    $ 73.99 USD
    Free Shipping on orders $49 and up
    $ 73.99 USD
    Free Shipping on orders $49 and up
    Rein's OE quality breather hose helps prevent pressure build-up in the engine.