Oil Separation & Breather System for BMW X Series E83 (2004-2010)

Clear BMW chassis

Please ensure your correct model is selected

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.

Sub-Categories

Sort By:

Crankcase Oil Separator Repair Kit - E83 X3 2.5i 3.0i 2004-2006 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Turner Motorsport - Corporate Logo
T#:2898
Part#: 11617533400-E83
Ships in 4 Business Days
$ 357.32 USD
Free Shipping
$ 357.32 USD
Free Shipping
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
Show More Show Less
URO PCV Breather Hose Kit - E39, E46, E83
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:592719
Part#: BMM54PCVKIT
In Stock
$ 117.99 USD
Free Shipping
$ 117.99 USD
Free Shipping
Comes with everything needed to refresh the PCV System!
Bremmen Crankcase Vent Hose - E60 E70 E82/88 E9X N52 3.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:640155
Part#: 11157559528
In Stock
Sale - Save 20% $ 48.99

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

$ 39.16 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 48.99

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

$ 39.16 USD
Free Shipping on orders $49 and up
This valve cover vent hose helps to vent the crankcase fumes on BMW's with the N51 / N52 6 cylinder engines. If replacing the valve cover, we recommend purchasing this item as well as it often will break while removing it from the valve cover.
Show More Show Less

Febi-Bilstein "Cold Climate" CCV Kit - 11617533400S1 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:28304463
Part#: 11617533400S1
In Stock
$ 238.99

This product was last offered at the strikethrough price on
04-15-2026

$ 179.99 USD
Free Shipping on orders $49 and up
$ 179.99 USD
Free Shipping on orders $49 and up

After the introduction of the M52TU/M54 engines, BMW observed an uptick in CCV-related issues, especially in cold regions. Vehicles operating in extremely low temperatures often encountered a blockage in the CCV dipstick hose, leading to elevated crankcase pressure and visible blue smoke from the exhaust. To address this issue, BMW introduced cold climate-specific hoses with foam insulation, preventing condensation and facilitating quicker oil warm-up. This kit incorporates top-notch reproduction cold climate hoses to ensure optimal CCV performance across all weather conditions.

The crankcase ventilation valve, known as the oil separator, PCV, CCV, or crankcase pressure regulator valve, plays a vital role in redirecting oil from your vehicle's intake system back into the engine oil pan. This system comprises numerous plastic and rubber hoses, prone to damage due to prolonged exposure to chemicals and heat.

Designed to tackle or prevent impending CCV system failures, this kit includes four foam-insulated hoses made from durable plastic capable of withstanding heat fluctuations and chemical exposure. Additionally, a new ventilation valve is included for a comprehensive and long-lasting repair solution.

Signs indicating the need for crankcase ventilation system replacement include:

Whistling sounds from the intake manifold, caused by crankcase pressure venting through holes in the CCV hoses. Blue smoke emitting from the tailpipe, indicating oil consumption. Excessive oil usage. Milky or yellowish buildup under the oil cap, suggesting condensation due to ventilation valve malfunction. If you're experiencing misfires, lean fuel codes, decreased fuel efficiency, or noticeable oil consumption, it's advisable to overhaul your crankcase ventilation system. Opt for this reliable system from Febi-Bilstein for a repair that meets factory standards and ensures consistent performance.

Show More Show Less

Angle Connector With Heating Element
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
MTC - Corporate Logo
T#:556608
Part#: 11618638014
Ships in 4 Business Days
$ 39.99 USD
Free Shipping on orders $49 and up
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.
Show More Show Less
Valve Cover Vent Hose - N51 N52 - E9x, E60, E70, Z4, E82
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:32279
Part#: 11157559528
In Stock
2% off MSRP $ 108.99

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

$ 106.99 USD
Free Shipping
2% off MSRP
$ 108.99

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

$ 106.99 USD
Free Shipping
This valve cover vent hose helps to vent the crankcase fumes on BMW's with the N51 / N52 6 cylinder engines. If replacing the the valve cover we recommend purchasing this item as well as it often will break while removing it from the valve cover.

This item fits the following BMWs:
2008-2013 E82 BMW 128i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive
2006-2010 E83 BMW X3 3.0i X3 3.0si
2007-2013 E70 BMW X5 3.0si X5 xDrive30i
2006-2008 E85 BMW Z4 3.0i Z4 3.0si
2009+ E89 BMW Z4 sDrive30i
Show More Show Less

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:640207
Part#: 11617501566
In Stock
Sale - Save 20% $ 32.99

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

$ 26.39 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 32.99

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

$ 26.39 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. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
Show More Show Less
Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:641646
Part#: 11617501566S1
In Stock
Sale - Save 15% $ 95.99

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

$ 81.59 USD
Free Shipping
Sale - Save 15%
$ 95.99

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

$ 81.59 USD
Free Shipping
BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate. Replace all the components of the oil separator system together to prevent damage to all the aspects of your engine. Level 1 kit includes the following; Oil separator Hose from oil separator to dipstick tube Hose from oil separator to valve cover Hose from intake manifold back to the connector hose Hose from oil separator up to the intake manifold
Show More Show Less

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:638072
Part#: 11617504536
In Stock
Sale - Save 20% $ 26.99

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

$ 21.59 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 26.99

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

$ 21.59 USD
Free Shipping on orders $49 and up
This is the BMW crankcase return line that goes from the intake manifold to the top CCV connecting hose. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
Show More Show Less

Genuine BMW Upper Oil Separator Vent Tube
For use in cold climates
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:13028
Part#: 11617533399
In Stock
2% off MSRP $ 42.99

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

$ 41.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 42.99

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

$ 41.99 USD
Free Shipping on orders $49 and up
GENUINE BMW CONNECTING LINE:111060
Crankcase Ventilation Hose Kit M54 Engine
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping
$ 79.99 USD
Free Shipping

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
Show More Show Less
Rein Crank Case Vent Hose - E60, E82, E83, E88, E90, E91, E92, E93, Z...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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.


Genuine BMW Return Pipe - 11617504536 - E46 E39 E53 E60 E83 Z3 Z4 M52...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:348236
Part#: 11617504536
Ships in 3 Business Days
2% off MSRP $ 43.99

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

$ 42.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 43.99

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

$ 42.99 USD
Free Shipping on orders $49 and up

Part of the vacuum and emissions system that runs from the intake manifold back to the connecting hose.
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.

Fits the following BMW's:
E46 M52 (from 01/2000) and M54
E39 M52 (from 01/2000) and M54
E53 M54
E60 M54
E83 M54
Z3 M52 (up to 01/2000 for 2.3L and from 01/2000 for 2.8L) and M54
Z4 M54

Show More Show Less
Genuine BMW Crankcase Ventilation Hose
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:367705
Part#: 11611432559
Ships in 3 Business Days
2% 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.

$ 46.99 USD
Free Shipping on orders $49 and up
2% 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.

$ 46.99 USD
Free Shipping on orders $49 and up
Genuine BMW Crankcase Ventilation Dipstick Hose
For use in cold climates
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:348228
Part#: 11157532629
In Stock
3% off MSRP $ 39.99

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

$ 38.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 39.99

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

$ 38.99 USD
Free Shipping on orders $49 and up

Genuine BMW Vacuum hose
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:13024
Part#: 11617503666
In Stock
4% off MSRP $ 23.99

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

$ 22.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 23.99

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

$ 22.99 USD
Free Shipping on orders $49 and up


Genuine BMW Hose Elbow -
This item fits the following BMW Chassis:
E39,E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M54


ECS Tuning Baffled Oil Catch Can - 8oz
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:13496655
Part#: 003779ECS05-02
In Stock
Sale - Save 5% $ 233.99

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

$ 222.11 USD
Free Shipping on orders $49 and up
Sale - Save 5%
$ 233.99

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

$ 222.11 USD
Free Shipping on orders $49 and up
Upgrade Your BMW with ECS Baffled Oil Catch Can

Modern emission regulations require a closed PCV/Breather system for cleaner operation. However, inefficient oil particle capture can lead to excessive oil vapor ingestion, causing carbon buildup, reduced performance, and fuel economy. ECS Tuning's updated ECS Baffled Oil Catch Can, now with an easy-to-empty 1/4" drain fitting, is engineered to collect toxic blow-by gases, minimize carbon deposits, and reduce oil contamination within engine oil. Recirculating oil vapor ensures emissions compliance without venting to the atmosphere.

  • Key Features:
  • Highly Efficient Oil Separator: Strategically positioned 4 chamber baffle system maximizes oil/air separation and minimizes oil droplets in the intake tract.
  • Integrated Dipstick: Knurled and black anodized oil dipstick simplifies oil volume inspection.
  • Reservoir: Available in 6oz or 8oz capacity with a 1/4" NPT drain plug fitting.
  • Serviceable: Easily removable baffle plates and drain plug for cleaning.
  • Easy/Customizable Installation: Combine with the ECS Universal Bracket Kit for simplified installation and adjustable mounting locations.
  • Leak-Free Fittings: Machined -10AN ORB (O-Ring Boss) fittings available for secure connections (fittings sold separately).
Show More Show Less
Upper Oil Separator Vent Tube
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Free Shipping on orders $49 and up
$ 22.99 USD
Free Shipping on orders $49 and up
Runs from the top of the oil separator up to intake manifold.

Crankcase Vent Return Hose - E46 E39 E60 Z3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:12449
Part#: 11617504536
In Stock at Vendor
$ 31.99 USD
Free Shipping on orders $49 and up
$ 31.99 USD
Free Shipping on orders $49 and up

This is the BMW crankcase return line that goes from the intake manifold to the top CCV connecting hose. We also offer a complete CCV repair kit
Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.


This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1997-2003 E39 BMW 525i 528i 530i
2004-2010 E60 BMW 525i 530i
2004-2005 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2000-2006 E53 BMW X5 3.0i
1/2000-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i

Show More Show Less
Upper Oil Separator Vent Tube
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:362022
Part#: 11617504535
Ships in 2 Business Days
$ 20.99 USD
Free Shipping on orders $49 and up
$ 20.99 USD
Free Shipping on orders $49 and up
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

Crankcase Pressure Regulator Valve
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:373032
Part#: 11617501566
Ships in 2 Business Days
$ 25.99 USD
Free Shipping on orders $49 and up
$ 25.99 USD
Free Shipping on orders $49 and up
Commonly referred to as the "oil separator" or PCV

Genuine BMW Crankcase Ventilation Hose
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:367590
Part#: 11157532649
Ships in 3 Business Days
3% off MSRP $ 39.99

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

$ 38.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 39.99

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

$ 38.99 USD
Free Shipping on orders $49 and up
Genuine BMW Crankcase Pressure Regulator Valve
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:367709
Part#: 11617501566
Ships in 3 Business Days
6% off MSRP $ 102.99

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

$ 96.99 USD
Free Shipping
6% off MSRP
$ 102.99

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

$ 96.99 USD
Free Shipping
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.
Show More Show Less
Genuine BMW Crankcase Ventilation Hose
For use in cold climates
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:19233
Part#: 11617533398
Ships in 3 Business Days
2% 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.

$ 46.99 USD
Free Shipping on orders $49 and up
2% 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.

$ 46.99 USD
Free Shipping on orders $49 and up
Genuine BMW ENGINE VENT PIPE


Genuine BMW Upper Oil Separator Vent Tube
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:7025
Part#: 11617504535
Ships in 3 Business Days
2% off MSRP $ 42.99

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

$ 41.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 42.99

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

$ 41.99 USD
Free Shipping on orders $49 and up


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

Fits BMW Engines including:
M52,M54

Upper Oil Separator Vent Tube
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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.
Crankcase Oil Separator Valve - E46 E39 E60 X3 X5 Z3 Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:2855
Part#: 11617501566
Ships on Sep 2, 2026
$ 48.99 USD
Free Shipping on orders $49 and up
$ 48.99 USD
Free Shipping on orders $49 and up
This Crankcase Oil Separator Valve fits BMWs with the M52tu or M54 6 cylinder engine including E46 323i 325i 328i 330i E39 525i 528i 530i E60 525i 530i X3 2.5i 3.0i X5 3.0i Z3 2.5 2.8 3.0i Z4 2.5i 3.0i. It is fairly common for this valve to become plugged with sludge which can create rough idle and excessive oil consumption.
Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
1999-2005 E46 BMW 325i 325ci 325xi - only with M54 engine
1999-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 525xi 530i 530xi
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8i Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
Show More Show Less

BMW Crankcase Pressure Regulator Valve
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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.
Show More Show Less

Oil Separator Hose - E46, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:579880
Part#: 55080
In Stock
Sale - Save 20% $ 24.99

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

$ 19.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 24.99

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

$ 19.99 USD
Free Shipping on orders $49 and up
Cold climate version for extra insulation! Fits all E46 and Z4 chassis equipped with an M54 engine.
Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:640147
Part#: 11611432559
In Stock
Sale - Save 22% $ 23.99

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

$ 18.76 USD
Free Shipping on orders $49 and up
Sale - Save 22%
$ 23.99

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

$ 18.76 USD
Free Shipping on orders $49 and up
Crankcase Vent Hose - From Valve Cover to Oil Separator - Fit BMWs with the M52 or M54 6 cylinder engine

Bremmen Parts O Ring
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:558205
Part#: 11617533329
In Stock
Sale - Save 30% $ 6.99

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

$ 4.89 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 6.99

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

$ 4.89 USD
Free Shipping on orders $49 and up
Seals the PCV angle connector to the intake manifold
Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:640502
Part#: 11617504535
In Stock
Sale - Save 20% $ 24.99

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

$ 19.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 24.99

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

$ 19.99 USD
Free Shipping on orders $49 and up
Runs from the top of the oil separator up to rear of the intake manifold. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
Show More Show Less

Febi Crankcase Ventilation Dipstick Hose - E39, E46, E60, E83, Z3, Z4...
For use in cold climates
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:359557
Part#: 11157532629
In Stock at Vendor
$ 23.28 USD
Free Shipping on orders $49 and up
$ 23.28 USD
Free Shipping on orders $49 and up
From oil separator to dipstick tube

Return Pipe
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:372847
Part#: 11617504536
Ships in 2 Business Days
$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
Free Shipping on orders $49 and up
Runs from the intake manifold back to connecting hose
Hose - From Oil Separator to Oil Dipstick Tube - E46 E39
For use in cold climates
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:2879
Part#: 11157532629
Ships in 4 Business Days
$ 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
Free Shipping on orders $49 and up
This is the updated hose that goes from the Crankcase Oil Separator Valve to the oil dipstick tube. This tube tends to get plugged with oil sludge and becomes brittle and cracks. It fits E46 323i 323ci 325i (M54) 325ci (M54) 325xi 328i 328ci 330i 330ci 330xi - E39 525i 530i - E60 525i 530i 2004-2005 - X3 2.5i 3.0i 2004-2006 - Z3 2.5i 3.0i - Z4 2.5i 3.0i 2003-2006.
In german, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

This item fits the following BMWs:
2001-2005 E46 BMW 325i 325ci 325xi Only for cars with M54 engine
1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
2001-2003 E39 BMW 525i 530i
2004-2005 E60 BMW 525i 525xi 530i 530xi
2004-2006 E83 BMW X3 2.5i X3 3.0i
2001-2002 Z3 BMW Z3 2.5i Z3 3.0i
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i
Show More Show Less
Crankcase Vent Hose - From Valve Cover to Oil Separator - E46 E39 E6...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:2853
Part#: 11611432559
Ships in 2 Business Days
$ 14.99 USD
Free Shipping on orders $49 and up
$ 14.99 USD
Free Shipping on orders $49 and up
This Crankcase Vent Hose - From Valve Cover to Oil Separator fits BMWs with the M52 or M54 6 cylinder engine including E46 323i 325i 328i 330i E39 525i 528i 530i E60 525i 530i X3 2.5i 3.0i X5 3.0i Z3 2.5 2.8 3.0i Z4 2.5i 3.0i.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
1999-2005 E46 BMW 325i 325ci 325xi - only with M54 engine
1999-2003 E39 BMW 528i 528i 530i
2004-2005 E60 BMW 525i 525xi 530i 530xi
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8i Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
Show More Show Less


Crankcase Ventilation Hose
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:378279
Part#: 11617533398
Ships in 2 Business Days
$ 21.99 USD
Free Shipping on orders $49 and up
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
Rein Return Pipe - E39, E46, E53, E60, E83, Z3, Z4
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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 at Vendor
$ 19.99 USD
Free Shipping on orders $49 and up
$ 19.99 USD
Free Shipping on orders $49 and up
Runs from the intake manifold back to connecting hose
Crankcase Ventilation Dipstick Hose - BMW M52TU M54
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:359570
Part#: 11157532629
Ships in 2 Business Days
$ 12.99 USD
Free Shipping on orders $49 and up

This tube runs from the oil separator to the lower dipstick tube.

 

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.

Show More Show Less

Rein Crankcase Ventilation Hose - E39, E46, E60, E83, Z3, Z4 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:359420
Part#: 11157532649
Ships in 9 Business Days
$ 11.99 USD
Free Shipping on orders $49 and up
$ 11.99 USD
Free Shipping on orders $49 and up
ENGINE VENT HOSE 11157532649

"Cold Climate" Crankcase Pressure Regulator Valve
Superior performance for both warm and cold climates
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:376770
Part#: 11617533400
Ships in 2 Business Days
$ 70.99

This product was last offered at the strikethrough price on
04-10-2026

$ 40.99 USD
Free Shipping
$ 40.99 USD
Free Shipping
Commonly referred to as the "oil separator" or PCV
URO Crankcase Ventilation Hose - BMW M52TU M54
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:377307
Part#: 11157532649
Ships in 2 Business Days
$ 12.99 USD
Free Shipping on orders $49 and up
$ 12.99 USD
Free Shipping on orders $49 and up
From oil separator to dipstick tube

Febi Crankcase Ventilation Hose - E39, E46, E60, E83, Z3, Z4 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:6707
Part#: 11157532649
In Stock at Vendor
$ 19.12

This product was last offered at the strikethrough price on
05-29-2026

$ 17.01 USD
Free Shipping on orders $49 and up
$ 17.01 USD
Free Shipping on orders $49 and up
ENGINE VENT HOSE 11157532649
Engine Crankcase Breather Element
Superior performance for both warm and cold climates
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#:35795496
Part#: 11617533400
Ships in 1-2 days
$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up
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.
Show More Show Less

Crankcase Ventilation Hose
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:30629689
Part#: 11157532649
Ships on Jul 6, 2026
Sale - Save 24% $ 15.99

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

$ 12.23 USD
Free Shipping on orders $49 and up
Sale - Save 24%
$ 15.99

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

$ 12.23 USD
Free Shipping on orders $49 and up