CCV Oil Separator System for BMW 3 Series E90 (2006-2011)

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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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Genuine BMW Crank Case Fasteners - N54 3.0L, N52 3.0L, N55 3.0L ...
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Genuine BMW - Corporate Logo
T#:30544
Part#: 11110392552
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$ 41.99 USD
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$ 42.99

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Genuine BMW Set Of Alu. Screws Crank Case
This item fits the following BMW Chassis:
E82 1M Coupe,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F22,F25 X3,F26 X4 X4,F30,F32,F33,F34,F36,F80 M3,F82 M4,F83

Fits BMW Engines including:
N51,N52,N52N,N54,N54T,N55,S55

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Genuine BMW PCV Non-return Valve - E9X M3, E6X M5 M6
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Genuine BMW - Corporate Logo
T#:36640
Part#: 11617836553
In Stock
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$ 55.03 USD
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$ 63.76

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The PCV system removes engine blow-by gases and flushes the crankcase with fresh air. PCV system problems result in numerous and sometimes severe problems including multiple oil leaks, contamination of multiple sensors and catalytic converters, deposit build-up in the air intake passages, and failed emissions tests.
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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
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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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Genuine BMW Crank Case Vent Hose - E82/88 E9X N55 3.0L
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Genuine BMW - Corporate Logo
T#:31506
Part#: 11127584128
In Stock
2% off MSRP $ 55.68

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$ 54.79 USD
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$ 55.68

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Connects to the CCV on the valve cover

N55 Upgraded Crank Case Vent Hose - E/F Chassis N55
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ECS - Corporate Logo
T#:40106225
Part#: 018481LA02
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$ 63.74 USD
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Upgraded replacement for your crankcase vent hose P#11127584128 featuring upgraded silicone, stainless steel clamps, and new OE connectors and seals.

Enhance your BMW N55 engine with our Silicone Crank Case Vent Hose, a premium replacement for the fragile, failure-prone factory hose. Over time, the stock plastic 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 plastic construction.

Each kit includes stainless steel hose clamps for a secure, hassle-free installation. Whether you’re replacing a worn-out CCV hose or upgrading for added peace of mind, this premium solution ensures your BMW N55 runs smoothly and efficiently for years to come.

Features:

Arrives preassembled with new OE fittings and seals
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 N55 the reliability it deserves—upgrade to the ECS Tuning Silicone CCV Hose today!

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Crank case vent hose N55 3.0L Engine
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Rein - Corporate Logo
T#:599676
Part#: 11127584128
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$ 50.71 USD
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Explore the Turner Motorsport Rein Crankcase Vent Hose designed for the N55 3.0L Engine in BMW vehicles. This high-quality vent hose plays a crucial role in maintaining the optimal performance of your BMW's engine. Crafted by Rein, a trusted name in automotive components, this hose ensures efficient ventilation, preventing issues associated with crankcase pressure. Upgrade your BMW's engine system with this vent hose for enhanced performance and longevity.

  • Specifically designed for the N55 3.0L Engine in BMW vehicles.
  • Ensures efficient ventilation for the crankcase.
  • High-quality construction for durability.
  • Prevents issues associated with crankcase pressure.
  • Reliable performance from a trusted brand in automotive components.

Upgrade your BMW's engine with the Turner Motorsport Rein Crankcase Vent Hose for a reliable and efficient solution to crankcase ventilation.

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Genuine BMW Crankcase Pressure Regulator Valve - E9X M3 S65
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Genuine BMW - Corporate Logo
T#:180985
Part#: 11157848155
Ships in 2 Business Days
3% off MSRP $ 479.99

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$ 465.99 USD
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$ 479.99

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This is a genuine BMW replacement crankcase pressure regulator valve that is attached to the top of the valve covers. This is often also referred to as an oil separator.
Angle Connector With Heating Element
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MTC - Corporate Logo
T#:556608
Part#: 11618638014
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$ 39.99 USD
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Being not only a connecting piece for the PCV line to the intake manifold but a heating element to prevent blockage it is possible to short out this piece. Easy to replace, prevent damage by getting a new piece today.
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Bremmen Crankcase Vent Breather Hose - BMW E82/88 E9X N55 3.0L ...
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Bremmen Parts - Corporate Logo
T#:640159
Part#: 11127584128
In Stock
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$ 40.79 USD
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Connects to the CCV on the valve cover

URO Parts Crankcase Breather Hose - 11127584128
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URO - Corporate Logo
T#:29002180
Part#: 11127584128
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$ 38.99 USD
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This hose connects to the PCV on your vehicle's valve cover. Constructed of brittle plastic, this component is commonly broken. Replace this hose to resolve diagnostic trouble codes or lean/rich running conditions.

Features & Benefits:

Guaranteed fitment Replacement of failed OE hose instantly restores crankcase breather functionality for proper control of hydrocarbon emissions High-quality materials resist cracking and splitting due to engine heat and oil vapor 24-Month Unlimited Mileage Warranty URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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ECS Tuning N54 PCV Valve Upgraded - BMW N54 3.0L
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ECS - Corporate Logo
T#:4154602
Part#: 090745ECS09
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This product was last offered at the strikethrough price on
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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Universal 10AN ORB To 3/8" Barb
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Radium Engineering - Corporate Logo
T#:31522993
Part#: RAD20-0530
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$ 37.99 USD
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N55 Silicone Upgraded Crank Case Vent Hose - E/F Chassis N55 ...
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ECS - Corporate Logo
T#:40106226
Part#: 018481LA01
Ships on Sep 21, 2026
Sale - Save 25% $ 26.99

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$ 20.24 USD
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Upgrade your BMW N55 engine with our Silicone Crank Case Vent Hose, a premium replacement for the fragile, failure-prone factory hose. Over time, the stock plastic 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 plastic construction.

Each kit includes stainless steel hose clamps for a secure, hassle-free installation. Whether you’re replacing a worn-out CCV hose or upgrading for added peace of mind, this premium solution ensures your BMW N55 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 N55 the reliability it deserves—upgrade to the ECS Silicone CCV Hose today!

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Oil Separator Valve
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Bremmen Parts - Corporate Logo
T#:8677203
Part#: 11617531423
Ships in 3 Business Days
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Genuine BMW Oil Separator Service Kit - E9X M3 S65
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Genuine BMW - Corporate Logo
T#:340670
Part#: 11157848155KT
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$ 1,077.99 USD
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The crankcase breather, or also commonly called the PCV or oil separator, allows the crankcase to expel air without losing any oil. When failing, the PCV can cause misfires and a rough running commonly experienced at idle. This kit allows you to service your breather system and keep your vehicle's emissions system in top shape and running great.
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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
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$ 31.44 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
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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!
URO Premium Crank Case Vent Hose - N55
For vehicles without blow by heater
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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

VTT CNC ORB Plug - -10AN
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Vargas Turbo Technologies - Corporate Logo
T#:642075
Part#: VTT-10ORB
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Flapper Delete Fitting - N54
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Vargas Turbo Technologies - Corporate Logo
T#:557962
Part#: VTT-FLAPPER-DELE
Ships in 3 Business Days
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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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Genuine BMW Crank Case Vent Hose
For vehicles without blow by heater
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Genuine BMW - Corporate Logo
T#:31524
Part#: 11127590163
Ships in 2 Business Days
6% off MSRP $ 47.99

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$ 44.99 USD
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6% 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.

$ 44.99 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 Crankcase Ventilation Return Pipe
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Genuine BMW - Corporate Logo
T#:22213
Part#: 11157567801
Ships in 2 Business Days
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$ 175.99 USD
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Genuine BMW Return Pipe -
This item fits the following BMW Chassis:
E85,E86,E90

Fits BMW Engines including:
N52

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
$ 479.99 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 Oil Separator Vent Hose
    For vehicles with production date from 10/2005
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    Genuine BMW - Corporate Logo
    T#:348665
    Part#: 11617559530OE
    Ships in 3 Business Days
    10% 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.

    $ 69.99 USD
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    10% 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.

    $ 69.99 USD
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    Genuine BMW Crankcase Ventilation Hose
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    Genuine BMW - Corporate Logo
    T#:32283
    Part#: 11157567802
    Ships in 2 Business Days
    3% 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.

    $ 157.99 USD
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    3% off MSRP
    $ 162.99

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    $ 157.99 USD
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    Genuine BMW Return Pipe -
    This item fits the following BMW Chassis:
    E90

    Fits BMW Engines including:
    N52

    Crankcase Oil Separator - E90 325i/330i, E60 525i/530i, E85 Z4 3.0i/3...
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    Genuine BMW - Corporate Logo
    T#:13027
    Part#: 11617531423
    Ships in 2 Business Days
    7% 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.

    $ 138.99 USD
    Free Shipping
    7% 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.

    $ 138.99 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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    Rein Crank Case Vent Hose
    For vehicles without blow by heater
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    Rein - Corporate Logo
    T#:17605208
    Part#: 11127590163
    In Stock
    Sale - Save 5% $ 26.47

    This product was last offered at the strikethrough price on
    06-29-2026

    $ 25.15 USD
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    This product was last offered at the strikethrough price on
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    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
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    Hengst - Corporate Logo
    T#:22064583
    Part#: AS815M
    Ships on Jul 27, 2026
    $ 64.99 USD
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    BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate.
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    FTP Motorsport PCV Valve Upgraded Replacement - N54
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    FTP Motorsport - Corporate Logo
    T#:583063
    Part#: SG84036
    Special Order: No Guaranteed ETA
    $ 60.00 USD
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    $ 60.00 USD
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    The OEM plastic PCV valve does not hold pressure well even when brand new. What this means is that when the turbochargers are making boost, pressurized air can become forced backwards through the valve and back into the crankcase. Depending on the condition of your PCV valve this can range from irritating to dangerous as a pressurized case can cause all sorts of issues. Additionally, if your valve cover is cracked due to age or has a bad gasket you are more than likely experiencing a pressure leak either internally or externally. These two features can cause even a low-mileage N54 to run like a tired elephant, sometimes even unlocking a special bonus function known as "Limp Mode". The solution is to replace any failed components and upgrade the PCV valve to something more capable withstanding the abuse of a turbocharged environment. FTP Motorsport has you covered with this solid aluminum valve assembly. It is essentially the same thing that came in your car from the factory, made out of aluminum. The internal components have also been made to fit tighter and outlast the life of an off the shelf replacement. No, this won't be the very last PCV valve you buy, but it will most certainly alleviate a lot of headaches common to N54 owners. And if you're tuned, big twin or single swapped you need one of these yesterday.
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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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    URO Oil Separator Vent Hose - E90,E91,E60,E62,Z4 N52 (10/2005+) ...
    For vehicles with production date from 10/2005
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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    URO - Corporate Logo
    T#:639498
    Part#: 11617559530
    In Stock
    $ 28.99

    This product was last offered at the strikethrough price on
    05-27-2026

    $ 24.99 USD
    Limited Qty Sale
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    $ 28.99

    This product was last offered at the strikethrough price on
    05-27-2026

    $ 24.99 USD
    Limited Qty Sale
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    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. As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!
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    Oil Separator Valve
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    Rein - Corporate Logo
    T#:594299
    Part#: 11617531423
    Ships in 3 Business Days
    Sale - Save 5% $ 120.81

    This product was last offered at the strikethrough price on
    06-29-2026

    $ 114.77 USD
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    Sale - Save 5%
    $ 120.81

    This product was last offered at the strikethrough price on
    06-29-2026

    $ 114.77 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 Oil Separator and Vent Hose Kit - E90 325xi/330xi, E60 525x...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Packaged by Turner - Corporate Logo
    T#:221962
    Part#: TMS221962
    Ships in 2 Business Days
    $ 455.99 USD
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    $ 455.99 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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    URO Crankcase Ventilation Return Hose - 11157567802
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    URO - Corporate Logo
    T#:26171676
    Part#: 11157567802
    Ships in 1 Business Day
    $ 55.99 USD
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    For your BMW's optimal performance, ensure the functionality of the hose connecting the oil dipstick to the crankcase vent valve. Positioned below the intake manifold, this hose is susceptible to clogging with oil film and condensation, leading to potential failure over time. Cracks and swelling in old hoses can result in oil and vacuum leaks, compromising engine performance.

    • Essential component for BMW engine functionality
    • Prevents clogging and potential hose failure
    • Minimizes oil and vacuum leaks
    • Convenient replacement when replacing crankcase vent valve
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    PCV Adapter Fitting N54
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    Vargas Turbo Technologies - Corporate Logo
    T#:557961
    Part#: VTT-PCV-ADAPTER
    Ships in 10 Business Days
    Sale - Save 15% $ 145.99

    This product was last offered at the strikethrough price on
    07-02-2026

    $ 124.09 USD
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    Sale - Save 15%
    $ 145.99

    This product was last offered at the strikethrough price on
    07-02-2026

    $ 124.09 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 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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    Genuine BMW Emissions Service Kit
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    Genuine BMW - Corporate Logo
    T#:376819
    Part#: 11617561408KT2
    Ships in 2 Business Days
    $ 225.99 USD
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    $ 225.99 USD
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