Oil Separation & Breather System for BMW 5 Series E60 (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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Burger Motorsports - Corporate Logo
T#:38587650
Part#: N54PCVVR
Back Ordered
$ 40.00 USD
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The BMS N54 Upgraded Replacement PCV Valve is a high-performance upgrade designed to enhance crankcase ventilation and minimize excessive blow-by in BMW N54 engines. Unlike the stock PCV valve, which can degrade over time and lead to oil consumption or boost leaks, this upgraded version provides superior sealing and long-term durability. ### Key Features: - **Direct-Fit Replacement** – Designed for an exact fit, ensuring hassle-free installation. - **Optimized Ventilation** – Improves crankcase pressure management, reducing oil blow-by and deposits. - **Enhanced Durability** – Constructed from premium materials to withstand high-boost applications and prolonged use. - **Boost Leak Prevention** – Delivers a tighter seal than the factory valve, preventing power loss. - **Ideal for Tuned Engines** – A critical upgrade for N54-powered vehicles running increased boost levels. Upgrade your N54’s crankcase ventilation system with the BMS Upgraded PCV Valve to ensure maximum performance, reliability, and engine longevity.
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BMW N54 3.0L Blow-By Vent Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594297
Part#: 11157553949
In Stock
$ 40.99 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.
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Vargas Turbo Technologies - Corporate Logo
T#:389684
Part#: VTT-N54-PCV
In Stock
$ 68.99 USD
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The crankcase oil vent system on the N52/N54 is one of its weakest and cheaply designed systems. We see crankcase vent issues on even stock engines but with more boost the problems are exponential. This Vargas upgraded PCV valve, and an oil catch can, are what the N54 engine needs and may alleviate most of your oil and boost leak issues. The PCV valve is supposed to let oil either return to the oil pan or pass through the intake manifold and get burned up in the combustion chamber. However, BMW used a weak plastic vent valve that doesn't seal well when under boost. Instead of  closing and venting the oil out of the intake, it's forced through this valve and into the intake and coating your valves with oil residue and carbon. Most boost equals more oil forcing its way by. This upgraded N54 PCV valve uses higher grade materials, including aluminum, to provide a better seal and prevent oil from entering the intake. It's an easy install and a must-have item when considering any turbo work.
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Rein Crankcase Ventilation Return Pipe - E60, E90, Z4
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:402081
Part#: 11157567801
In Stock at Vendor
$ 81.38

This product was last offered at the strikethrough price on
08-13-2026

$ 78.99 USD
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$ 78.99 USD
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Located under intake manifold

Crankcase Ventilation Hose Kit M54 Engine
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379190
Part#: 11617504535K
Ships in 2 Business Days
$ 79.99 USD
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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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Billet Check Valve - 10 Barb
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:597641
Part#: VTT-CHECK-2
In Stock
$ 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!

Flapper Delete Fitting - N54
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:557962
Part#: VTT-FLAPPER-DELE
Ships on Oct 28, 2026
$ 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 Vent Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17804807
Part#: 11157522931
In Stock
$ 44.99

This product was last offered at the strikethrough price on
10-13-2026

$ 38.99 USD
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$ 38.99 USD
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Manufactured with high-quality materials to withstand heat, dirt, oil, and other debris.

Billet 1/2" Check Valve - N54
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:557954
Part#: VTT-CHECK-1
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!

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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Rein - Corporate Logo
T#:402018
Part#: 11157559528
In Stock
$ 48.99 USD
Free Shipping on orders $49 and up
Over time this hose can become clogged and blocked up causing running problems. This is a direct factory replacement for the PCV hose.
Upper Oil Separator Vent Tube
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:378292
Part#: 11617504535
Ships in 2 Business Days
$ 22.99 USD
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$ 22.99 USD
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Runs from the top of the oil separator up to intake manifold.
VTT CNC ORB Plug - -10AN
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:642075
Part#: VTT-10ORB
Ships on Oct 28, 2026
$ 23.99 USD
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$ 23.99 USD
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Rein Crankcase Ventilation Hose - E60, E61, E90, E91
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:591594
Part#: 11157567802
Ships in 4 Business Days
$ 74.99 USD
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$ 74.99 USD
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From oil separator to oil pan vent tube
Upper Oil Separator Vent Tube
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:552486
Part#: 11617533399
Ships in 1-2 days
$ 35.99 USD
Free Shipping on orders $49 and up
Runs from the top of the oil separator up to rear of the intake manifold.
OEM Rein CCV Hose - E60/1/3/4/5/6 E70 N62
For vehicles with a production date from 11/2006+
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:402019
Part#: 11617563477
Ships in 4 Business Days
$ 109.99 USD
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$ 109.99 USD
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Is your Crankcase Ventilation system malfunctioning? Or maybe it's just time to refresh the system? This part is the necessary hose to refresh your CCV system.

OEM Rein Oil Separator Vent Hose - E60/61 E90/91 Z4
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:13029
Part#: 11617559530
Ships in 4 Business Days
$ 66.99

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

$ 43.99 USD
Free Shipping on orders $49 and up
$ 43.99 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. 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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BMW Crankcase Pressure Regulator Valve
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46478579
Part#: ABH0263
In Stock
$ 23.99 USD
Free Shipping on orders $49 and up
$ 23.99 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. 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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Packaged by Turner - Corporate Logo
T#:221962
Part#: TMS221962
Ships in 2 Business Days
$ 458.99 USD
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$ 458.99 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
  • 11157567801, 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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    Rein Crankcase Ventilation Hose - Cylinders 1-4
    For vehicles with updated valve cover, 11127563474
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:17738390
    Part#: 11617563476
    Ships in 4 Business Days
    $ 46.99 USD
    Free Shipping on orders $49 and up
    $ 46.99 USD
    Free Shipping on orders $49 and up
    Manufactured with high-quality materials to withstand heat, dirt, and debris, matching OE expectations.
    Oil Separator Valve
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:594299
    Part#: 11617531423
    Ships in 4 Business Days
    $ 120.81 USD
    Free Shipping
    $ 120.81 USD
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    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.
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    Rein Return Pipe - E39, E46, E53, E60, E83, Z3, Z4
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:375092
    Part#: 11617504536
    In Stock
    $ 19.99 USD
    Free Shipping on orders $49 and up
    $ 19.99 USD
    Free Shipping on orders $49 and up
    Runs from the intake manifold back to connecting hose

    PCV Adapter Fitting N54
    2X Entries Into Our F80 M3 Sweepstakes
    Vargas Turbo Technologies - Corporate Logo
    T#:557961
    Part#: VTT-PCV-ADAPTER
    Ships on Oct 28, 2026
    $ 145.99 USD
    Free Shipping
    $ 145.99 USD
    Free Shipping

    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 the adapter fitting that is required to convert your N54 to external PCV if you want to keep your crankcase under vacuum at idle, and anytime you have a vacuum condition in your intake manifold. They are made from 6061-T6 with black anodizing for a long-lasting finish. Includes complete adapter, with all o-rings, and retaining clip.

    This must be used in conjunction with  the Vargas billet check valve, and PCV delete fitting or requires plugging of the intake PCV ports. Installs inline on the throttle body, and adds a -8AN male to adapt to a catch cans, or any custom set up.

    Made from 6061-T6 with black anodizing for a long-lasting finish. Includes complete adapter, with all o-rings, and retaining clip

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

     

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    OEM Rein Oil Separator Vent Hose - E60/1 E90/1 N52
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:402020
    Part#: 11617522933
    Ships in 2 Business Days
    $ 19.99 USD
    Free Shipping on orders $49 and up
    If your BMW has a damaged vent hose, be sure to replace it to restore functionality of this rather important emissions system.
    Crankcase Vent Hose - Cylinders 5-8
    For vehicles with production date up to 11/2006
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:384972
    Part#: 11617547186
    Ships in 4 Business Days
    $ 59.99 USD
    Free Shipping
    $ 59.99 USD
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    Should be replaced anytime leaks are detected


    Hose - From Oil Separator to Oil Dipstick Tube - E46 E39
    For use in cold climates
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:2879
    Part#: 11157532629
    In Stock at Vendor
    $ 10.99 USD
    Free Shipping on orders $49 and up
    $ 10.99 USD
    Free Shipping on orders $49 and up
    This is the updated hose that goes from the Crankcase Oil Separator Valve to the oil dipstick tube. This tube tends to get plugged with oil sludge and becomes brittle and cracks. It fits E46 323i 323ci 325i (M54) 325ci (M54) 325xi 328i 328ci 330i 330ci 330xi - E39 525i 530i - E60 525i 530i 2004-2005 - X3 2.5i 3.0i 2004-2006 - Z3 2.5i 3.0i - Z4 2.5i 3.0i 2003-2006.
    In german, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

    This item fits the following BMWs:
    2001-2005 E46 BMW 325i 325ci 325xi Only for cars with M54 engine
    1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
    2001-2003 E39 BMW 525i 530i
    2004-2005 E60 BMW 525i 525xi 530i 530xi
    2004-2006 E83 BMW X3 2.5i X3 3.0i
    2001-2002 Z3 BMW Z3 2.5i Z3 3.0i
    2003-2005 Z4 BMW Z4 2.5i Z4 3.0i
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    Crankcase Vent Hose - Cylinders 1-4
    For vehicles with production date up to 11/2006
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:384973
    Part#: 11617547185
    Ships in 4 Business Days
    $ 57.99 USD
    Free Shipping
    $ 57.99 USD
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    Should be replaced anytime leaks are detected
    Rein - Corporate Logo
    T#:55821694
    Part#: 11127547058
    Ships in 4 Business Days
    New Item
    $ 16.99 USD
    Free Shipping on orders $49 and up
    This Rein Automotive repair kit allows you to service the internal components of the crankcase breather valve independently. Instead of replacing the entire, costly valve cover or manifold assembly, this kit provides the exact wear items required to rebuild the factory housing back to original operating specifications. All components are manufactured to strict OE tolerances. The diaphragm is molded from premium, oil-resistant elastomers engineered to withstand prolonged exposure to aggressive synthetic lubricants, fuel vapors, and extreme under-hood heat cycles without losing its elasticity or sealing profile.
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    Rein - Corporate Logo
    T#:359420
    Part#: 11157532649
    Ships in 4 Business Days
    $ 11.99 USD
    Free Shipping on orders $49 and up
    $ 11.99 USD
    Free Shipping on orders $49 and up
    ENGINE VENT HOSE 11157532649