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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Turner Motorsport - Corporate Logo
T#:221961
Part#: TMS221961
Ships in 3 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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    Turner Motorsport - Corporate Logo
    T#:46203577
    Part#: 058973LA02
    In Stock
    $ 101.99

    This product was last offered at the strikethrough price on
    06-24-2026

    $ 78.99 USD
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    $ 78.99 USD
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    Due to weak plastic construction, the factory plastic crankcase ventilation breather hose is known to fail. After years of exposure to piping-hot engine bay temperatures and chemical-laden oil vapors, the corrugated plastic tubing can crack, crumble, or fail altogether.

    We set out to bulletproof your N52 CCV system with a durable silicone breather hose, designed to provide a comprehensive upgrade and permanent replacement for the factory plastic hose. By replacing the flimsy, heat-hardened OEM plastic hose with a four-ply fluorosilicone hose, you'll experience peace of mind knowing your N52 is free from the inevitable return of oil leaks, vacuum leaks, and drivability concerns that would have been.

    This breather hose is found at the front of the engine, and is used to connect the oil separator to the valve cover. It replaces OEM part number 11157522931.

    Features:

    Silicone construction ensures a durable replacement that is sure to outlast OE plastic
    Designed as a direct replacement for the factory breather hose
    Retains heating function and OE electrical connector
    Design:

    Four-ply wire-reinforced fluorosilicone hose is designed to resist degradation due to exposure to oil vapors
    O-rings are pre-installed in OE connectors for a lasting seal
    Includes pre-installed zinc-coated hose clamps for durability and corrosion resistance
    Product Development:

    Our Silicone CCV Hose Upgrade was designed, engineered, tested, and quality inspected by our Research and Development team in our Wadsworth, Ohio, facility. We strive for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modelling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.

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    Turner Motorsport - Corporate Logo
    T#:2889
    Part#: 11617533400-E60
    Ships in 3 Business Days
    $ 454.99 USD
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    $ 454.99 USD
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    This Crankcase Vent / Oil Separator Repair Kit includes the updated oil separator valve, oil dipstick guide tube and hoses. The kit includes:
    1 x 11617533400 - Oil Separator Valve
    1 x 11437565440 - Dip Stick Guide Tube
    1 x 11617533398 - Hose from Valve to Valve Cover
    1 x 11617533399 - Hose from Valve to Intake Manifold
    1 x 11157532629 - Hose from Vent Valve to Dipstick1 x 11431740045 - O-ring for Dip Stick Guide Tube


    This item fits the following BMWs:
    2004-2005 E60 BMW 525i 530i
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    Turner Motorsport - Corporate Logo
    T#:46203579
    Part#: 058981LA02
    In Stock
    $ 101.99

    This product was last offered at the strikethrough price on
    06-14-2026

    $ 59.99 USD
    Free Shipping
    $ 59.99 USD
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    Due to weak plastic construction, the factory plastic crankcase ventilation breather hose is known to fail. After years of exposure to piping-hot engine bay temperatures and chemical-laden oil vapors, the corrugated plastic tubing can crack, crumble, or fail altogether.

    Upgrade your N52 CCV system with this durable silicone oil separator hose, designed to provide a comprehensive upgrade and permanent replacement for the factory plastic hose. By replacing the flimsy, heat-hardened OEM plastic hose with a four-ply fluorosilicone hose from Turner Motorsport, you'll experience peace of mind knowing your N52 is free from the inevitable return of oil leaks, vacuum leaks, and drivability concerns that would have been.

    This hose is located underneath the intake manifold and is used to connect the oil separator to the induction tract. It replaces OEM part number 11617559530.

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    BMW N54 3.0L Blow-By Vent Hose
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:594297
    Part#: 11157553949
    In Stock
    $ 40.36 USD
    Free Shipping on orders $49 and up
    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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    Rein Crankcase Ventilation Return Pipe - E60, E90, Z4
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:402081
    Part#: 11157567801
    In Stock at Vendor
    $ 81.20 USD
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    $ 81.20 USD
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    Located under intake manifold

    Crankcase Ventilation Hose Kit M54 Engine
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    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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    Rein Crank Case Vent Hose - E60, E82, E83, E88, E90, E91, E92, E93, Z...
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    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.

    Rein Crankcase Vent Hose
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:17804807
    Part#: 11157522931
    Ships in 2 Business Days
    $ 44.99 USD
    Free Shipping on orders $49 and up
    Manufactured with high-quality materials to withstand heat, dirt, oil, and other debris.

    Rein Crankcase Ventilation Hose - E60, E61, E90, E91
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    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 For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    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.
    OEM Rein CCV Hose - E60/1/3/4/5/6 E70 N62
    For vehicles with a production date from 11/2006+
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:402019
    Part#: 11617563477
    Ships in 1-2 days
    $ 104.99 USD
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    $ 104.99 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.


    Upper Oil Separator Vent Tube
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    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 Oil Separator Vent Hose - E60/61 E90/91 Z4
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:13029
    Part#: 11617559530
    Ships in 1-2 days
    $ 66.99

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

    $ 64.99 USD
    Free Shipping on orders $49 and up
    $ 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. 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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    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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    Crankcase Vent Hose - Cylinders 5-8
    For vehicles with production date up to 11/2006
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:384972
    Part#: 11617547186
    Ships in 4 Business Days
    $ 59.99 USD
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    $ 59.99 USD
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    Should be replaced anytime leaks are detected

    Rein Return Pipe - E39, E46, E53, E60, E83, Z3, Z4
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:375092
    Part#: 11617504536
    In Stock
    $ 19.99 USD
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    $ 19.99 USD
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    Runs from the intake manifold back to connecting hose
    Oil Separator Valve
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:594299
    Part#: 11617531423
    Ships in 4 Business Days
    $ 120.81 USD
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    $ 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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    Crankcase Vent Hose - Cylinders 1-4
    For vehicles with production date up to 11/2006
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:384973
    Part#: 11617547185
    Ships in 4 Business Days
    $ 57.99 USD
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    $ 57.99 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 For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:2879
    Part#: 11157532629
    In Stock at Vendor
    $ 11.99

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

    $ 10.99 USD
    Free Shipping on orders $49 and up
    $ 10.99 USD
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    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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    OEM Rein Oil Separator Vent Hose - E60/1 E90/1 N52
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    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.

    Rein Crankcase Ventilation Hose - Cylinders 1-4
    For vehicles with updated valve cover, 11127563474
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    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
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    Manufactured with high-quality materials to withstand heat, dirt, and debris, matching OE expectations.
    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 Crankcase Ventilation Hose - E39, E46, E60, E83, Z3, Z4 ...
    2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Rein - Corporate Logo
    T#:359420
    Part#: 11157532649
    In Stock
    $ 11.99 USD
    Free Shipping on orders $49 and up
    $ 11.99 USD
    Free Shipping on orders $49 and up
    ENGINE VENT HOSE 11157532649