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Oil Separation & Breather System

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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M57 Upgraded Silicone PCV Hose - E90 335d, E70 35d
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Turner Motorsport - Corporate Logo
T#:39734496
Part#: 056926LA01
In Stock
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$ 24.79 USD
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Turner Motorsport Silicone PCV Hose for BMW M57

Upgrade your BMW M57 engine with our Silicone PCV Hose, a premium replacement for the fragile, failure-prone factory hose. Over time, the stock rubber hose deteriorates due to constant exposure to heat and oil, leading to cracks and leaks. Our solution? A high-quality silicone hose engineered for superior durability and long-term reliability.

To further enhance performance, we’ve lined the hose with fluorosilicone, providing exceptional resistance to oil and chemical degradation. Designed in-house using advanced CAD modeling and 3D scanning, this hose offers a precise OEM fit while eliminating the common weaknesses of rubber construction.

Each kit includes stainless steel hose clamps for a secure, hassle-free installation. Whether you’re replacing a worn-out PCV hose or upgrading for added peace of mind, this premium solution ensures your BMW M57 runs smoothly and efficiently for years to come.

Features:

Direct OEM Fit – Retains factory hose dimensions while eliminating reliability issues.
High-Performance Silicone – Resists heat-related wear for long-lasting durability.
4-Ply Fluorosilicone Lining – Superior protection against oil and chemical exposure.
Stainless Steel Clamps Included – Secure installation and extended service life.
Give your BMW M57 the reliability it deserves—upgrade to the Turner Motorsport Silicone PCV Hose today!

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Turner S54 CSL Silicone Crankcase Vent Hose - E46 M3 Z3M
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Turner Motorsport - Corporate Logo
T#:10681673
Part#: 018562LA02
In Stock
Sale - Save 25% $ 93.99

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

$ 70.49 USD
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Sale - Save 25%
$ 93.99

This product was last offered at the strikethrough price on
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$ 70.49 USD
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The factory rubber/plastic hoses become brittle and crack over time. Brittle and cracked hoses can cause multiple vacuum leaks that are impossible to repair without hose replacement. Vacuum leaks can cause many problems including rough running, missing, stalling at idle, and even a no-start condition.

The factory hoses offered through BMW are plastic and will yield the same results of becoming brittle and damaged over time. Our solution is a premium replacement that will outlast everyone of the OEM replacements. Our Silicone Crankcase Vent Hose can be used to replace the factory brittle hose to ensure your S54 is free from vacuum leaks and performing properly.

CSL Vent Hose (11157833649) - Silicone Crankcase Vent hose is a direct replacement

Key benefits:

Lifetime replacement of the brittle OEM plastic crankcase breather hose that is susceptible to cracking overtime from constant heat cycling

Design:

Retains OEM hose end fittings to ensure proper seal

“Black” 3 ply reinforced silicone w/ “White” Turner logo

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Upgraded Silicone CCV Hose (11151703775) - M52/S52
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Turner Motorsport - Corporate Logo
T#:46203574
Part#: 059015LA02
Ships on Aug 17, 2026
Sale - Save 49% $ 59.99

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

$ 30.74 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 M52/S52 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 M52 or S52 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 cyclone separator to the valve cover. It replaces OEM part number 11151703775.

Features:

Silicone construction ensures a durable replacement that is sure to outlast OE plastic Designed as a direct replacement for the factory breather hose - not too short like many aftermarket alternatives, and does not require cutting to fit Works seamlessly with the OEM OBDII valve cover and cyclone separator, as well as the Turner Motorsport Billet Aluminum Valve Cover (T#26238386) Design:

Three-ply wire-reinforced fluorosilicone hose is designed to resist degradation due to exposure to oil vapors O-rings are pre-installed in OE Norma connectors for a lasting seal Includes pre-installed 430 stainless steel 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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Tuner S54 Silicone Crankcase Vent Hose Repair Kit - E46 M3 Z3M ...
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Turner Motorsport - Corporate Logo
T#:7196695
Part#: 018562LA01
In Stock
Sale - Save 25% $ 41.99

This product was last offered at the strikethrough price on
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$ 31.49 USD
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Sale - Save 25%
$ 41.99

This product was last offered at the strikethrough price on
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$ 31.49 USD
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The factory rubber/plastic hoses become brittle and crack over time. Brittle and cracked hoses can cause multiple vacuum leaks that are impossible to repair without hose replacement. Vacuum leaks can cause many problems including rough running, missing, stalling at idle, and even a no-start condition. Replace the brittle or broken line that attaches between the oil separator and air box. Our Turner Silicone Crankcase Hose can be used in place of both the standard and CSL intake boxes.

Our engineers at Turner sought out to solve the degrading issues that happens with the factory crankcase vent hose and found the best solution is a silicone replacement. Our Turner Silicone Crankcase Vent Hose can be used to replace the factory brittle hose to prevent vacuum leaks and lackluster performance. Simply take your factory crankcase vent hose and remove the ends; the factory ends can be installed on the new Silicone Vent Hose with the supplied clamps for a tight seal.

Turner Silicone Crankcase Vent Hose replaces the following part #'s:

CSL Vent Hose (11157833649) - Silicone Crankcase Vent hose is a direct replacement
Non-CSL Vent Hose(11157831311) - Silicone hose will make a "U" bend with direct fitment and can also be trimmed for your own preferable fit.

- Key benefits:

Lifetime replacement of the brittle OEM plastic crankcase breather hose that is susceptible to cracking overtime from constant heat cycling
- Design:

Turner logo forward facing when hood is open
Retains OEM hose end fittings to ensure proper seal and reduce cost
“Black” 3 ply reinforced silicone w/ “White” Turner logo
includes 2 German style 430 stainless worm-drive clamps for installation
- Special care instructions:

Do not overtighten hose clamps, hand tight is recommended.
Carefully cut the OEM plastic casing from both plastic fittings for reuse

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AN CSL Crankcase Vent Hose - (00-04.5)
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Turner Motorsport - Corporate Logo
T#:16907195
Part#: 043464LA02
In Stock
Sale - Save 20% $ 178.99

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

$ 143.19 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 178.99

This product was last offered at the strikethrough price on
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$ 143.19 USD
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A combination of billet fittings and AN lines for an upgraded and serviceable crankcase vent hose. Attaches between the oil separator and the CSL air box.

The factory rubber/plastic hoses become brittle and crack over time. Brittle and cracked hoses can cause multiple vacuum leaks that are impossible to repair without hose replacement. Vacuum leaks can cause many problems including rough running, missing, stalling at idle, and even a no-start condition. The factory hoses offered through BMW are plastic and will yield the same results of becoming brittle and damaged over time.

We have created a full motorsport style solution with our CSL Crankcase made from machined 6061 billet aluminum with AN style fittings and nylon fiber braided lines. This is a fully serviceable replacement that will outlast every one of the OEM replacements. Our AN crankcase line can be used to replace the factory brittle hose to ensure your S54 is free from vacuum leaks and performing properly.

OEM CSL Vent Hose (11157833649) - Direct Replacement

Key benefits:

Lifetime replacement of the brittle OEM plastic crankcase breather hose
Fully Serviceable
Motorsport Aesthetic to compliment your CSL Intake Plenum
Design:

Fittings are made from billet 6061-T6 aluminum and finished in Type II black anodizing
Pre-anodized machined Turner branding
Nylon fiber braided lines
Fittings are a direct replacement for the plastic OEM fittings

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Upgraded Silicone PCV Hose - (11127588417) - N20/N26
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Turner Motorsport - Corporate Logo
T#:46203566
Part#: 018501LA02
Ships on Aug 3, 2026
Sale - Save 25% $ 101.99

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

$ 76.49 USD
Free Shipping
Sale - Save 25%
$ 101.99

This product was last offered at the strikethrough price on
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$ 76.49 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 N20 PCV 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 N20 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 inlet pipe to the valve cover. It replaces OEM part number 11127588417.

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 PCV 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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Crankcase Oil Separator and Vent Hose Kit - E90 325xi/330xi, E60 525x...
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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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    CSL Crankcase Vent Hose - AN Lines and Fittings (04.5-06)
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    Turner Motorsport - Corporate Logo
    T#:17405917
    Part#: 043464LA03
    In Stock
    Sale - Save 20% $ 177.99

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

    $ 142.39 USD
    Free Shipping on orders $49 and up
    Sale - Save 20%
    $ 177.99

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

    $ 142.39 USD
    Free Shipping on orders $49 and up

    A combination of billet fittings and AN lines for an upgraded and serviceable crankcase vent hose. Attaches between the oil separator and the CSL air box.

    The factory rubber/plastic hoses become brittle and crack over time. Brittle and cracked hoses can cause multiple vacuum leaks that are impossible to repair without hose replacement. Vacuum leaks can cause many problems including rough running, missing, stalling at idle, and even a no-start condition. The factory hoses offered by BMW are plastic and will yield the same results of becoming brittle and damaged over time.

    We have created a full motorsport-style solution with our CSL Crankcase made from machined 6061 billet aluminum with AN-style fittings and nylon fiber braided lines. This is a fully serviceable replacement that will outlast every one of the OEM replacements. Our AN crankcase line can be used to replace the factory brittle hose to ensure your S54 is free from vacuum leaks and performing properly.

    OEM CSL Vent Hose (11157833649) - Direct Replacement for cars with secondary shut-off valve. (11157834056)

    Key benefits:

    Lifetime replacement of the brittle OEM plastic crankcase breather hose
    Fully Serviceable
    Motorsport Aesthetic to compliment your CSL Intake Plenum
    Design:

    Fittings are made from billet 6061-T6 aluminum and finished in Type II black anodizing
    Pre-anodized machined Turner branding
    Nylon fiber braided lines
    Fittings are a direct replacement for the plastic OEM fittings
    Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.

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    Upgraded Silicone CCV Hose - (11157522931) - N52
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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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    Crankcase Oil Separator Repair Kit - E60 525i 530i 2004-2005 ...
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    Turner Motorsport - Corporate Logo
    T#:2889
    Part#: 11617533400-E60
    Ships in 2 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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    Crankcase Oil Separator Repair Kit - E83 X3 2.5i 3.0i 2004-2006 ...
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    Turner Motorsport - Corporate Logo
    T#:2898
    Part#: 11617533400-E83
    Ships in 2 Business Days
    $ 400.21 USD
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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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    Crankcase Oil Separator Repair Kit - E85 Z4 2.5i 3.0i 2003-2006 ...
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    Turner Motorsport - Corporate Logo
    T#:2895
    Part#: 11617533400-E85
    Ships in 2 Business Days
    Sale - Save 5% $ 406.99

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

    $ 386.64 USD
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    Sale - Save 5%
    $ 406.99

    This product was last offered at the strikethrough price on
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    $ 386.64 USD
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    This Crankcase Vent / Oil Separator Repair Kit includes the updated oil separator valve, oil dipstick guide tube and hoses. This kit fits E85 Z4 2.5i Z4 3.0i 2003-2005.

    This item fits the following BMWs:
    2003-2006 E85 BMW Z4 2.5i Z4 3.0i
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    Turner Motorsport Silicone Oil Separator Hose Upgrade (11617559530) -...
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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
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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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    E82 135i N54, E9X 335 N54, E60 535 Vargas Upgraded PCV Valve ...
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    Vargas Turbo Technologies - Corporate Logo
    T#:389684
    Part#: VTT-N54-PCV
    In Stock
    $ 68.99 USD
    Free Shipping on orders $49 and up
    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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    VTT Gen-1 PCV CAP - B58
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    Vargas Turbo Technologies - Corporate Logo
    T#:4813265
    Part#: VTT-B58-PCV-CAP
    In Stock
    $ 149.99 USD
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    $ 149.99 USD
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    Vargas has developed a solution to problematic PCV systems! Stock diaphragms on the gen-1 B58 Valve cover are fragile and can crack or tear over time. This can cause loss of crankcase vacuum and smoking. The VTT PCV cap replaces the factory plastic cap with a billet aluminum piece which uses a Billet Banjo fitting, and VTT's Vaccum/Boost adapter to move vacuum directly from the head ports to the manifold. This cap will also allow you to run a catch can on the low side if desired. VTT Recommends using this cap alongside their High Side Catch Can and crankcase breather for maximum efficiency. Installation is as simple as popping the stock cap off, removing the diaphragm, and placing the VTT components in place. Kit Includes: One Billet PCV Cap One Billet Banjo Fitting One Vaccum/Boost adapter One line with built-in check valve
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    Engine Crankcase Breather Element
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    5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Hengst - Corporate Logo
    T#:35795496
    Part#: 11617533400
    In Stock
    $ 40.99 USD
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    $ 40.99 USD
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    Commonly referred to as the "oil separator" or PCV URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts.
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    Billet 1/2" Check Valve - N54
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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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    Billet Check Valve - 10 Barb
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    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!

    VTT CNC ORB Plug - -10AN
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    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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    Flapper Delete Fitting - N54
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    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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    Oil Separator Valve
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Hengst - Corporate Logo
    T#:22064588
    Part#: AS819M
    In Stock
    $ 41.99

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

    $ 31.99 USD
    Limited Qty Sale
    Free Shipping on orders $49 and up
    $ 41.99

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

    $ 31.99 USD
    Limited Qty Sale
    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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    PCV Adapter Fitting N54
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Vargas Turbo Technologies - Corporate Logo
    T#:557961
    Part#: VTT-PCV-ADAPTER
    Ships in 10 Business Days
    $ 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

     

    Show More Show Less
    Oil Separator Valve
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
    Hengst - Corporate Logo
    T#:22064593
    Part#: AS826M-D851
    Ships on Aug 3, 2026
    $ 62.99 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.
    Show More Show Less