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CCV Oil Separator System

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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Rein - Corporate Logo
T#:39059262
Part#: 11157840446
In Stock
$ 40.99 USD
Free Shipping on orders $49 and up

BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine is a crucial component that ensures proper crankcase ventilation by regulating oil vapor flow into the intake manifold, preventing excessive oil consumption and buildup. Designed specifically for BMW E46 models with the S54 3.2L engine, this valve helps maintain engine efficiency and performance. BMW engines are known to experience oil separator freezing in cold weather if not fully warmed up, which can lead to howling noises and oil leaks. To ensure a thorough repair, replacing the valve cover gasket when changing the separator is highly recommended.

  • Regulates crankcase pressure to prevent excessive oil consumption
  • Helps maintain proper engine ventilation for peak performance
  • Reduces the risk of oil separator freezing and associated leaks
  • Direct-fit replacement for BMW E46 models with S54 3.2L engine
  • High-quality materials ensure durability and long-lasting performance
  • Recommended to replace the valve cover gasket for a complete repair

Protect your BMW's engine from excessive oil consumption and leaks by replacing a failing crankcase pressure regulator valve with this premium-quality replacement.

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MTC - Corporate Logo
T#:556608
Part#: 11618638014
In Stock
$ 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.
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Crank case vent hose N55 3.0L Engine
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:599676
Part#: 11127584128
In Stock
$ 53.99 USD
Free Shipping on orders $49 and up

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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Oil Separator Valve
5X Entries Into Our F80 M3 Sweepstakes
5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Hengst - Corporate Logo
T#:22064583
Part#: AS815M
Ships in 9 Business Days
$ 64.99 USD
Free Shipping on orders $49 and up
BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate.
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Crankcase Pressure Regulator Valve
5X Entries Into Our F80 M3 Sweepstakes
5X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Hengst - Corporate Logo
T#:22064591
Part#: AS830M
Ships on Oct 30, 2026
Sale - Save 27% $ 35.99

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

$ 26.31 USD
Free Shipping on orders $49 and up
Sale - Save 27%
$ 35.99

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

$ 26.31 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 all the components of the oil separator system together to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable.
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Vent Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:3136224
Part#: 11157612996
In Stock
$ 36.85 USD
Free Shipping on orders $49 and up

Rein Crankcase Ventilation Pipe - F15/F16 N63
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17605207
Part#: 11158647962
In Stock
$ 199.99 USD
Free Shipping on orders $49 and up
A leaking crank vent can cause check engine lights and failed emissions, select Rein's more affordable option to get your car running healthy again.
Crankcase Pressure Regulator Valve
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594300
Part#: 11151703484
In Stock
$ 50.99

This product was last offered at the strikethrough price on
08-31-2026

$ 48.99 USD
Free Shipping on orders $49 and up
$ 48.99 USD
Free Shipping on orders $49 and up
BMW has an issue with oil separators freezing in cold weather if the engine is not fully warmed up during driving. Common symptoms are a howling noise followed by oil leaks.

Crankcase Vent Valve - Rein - BMW E39 M5 E52 Z8
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:38229086
Part#: 11151406789
Ships in 4 Business Days
$ 44.99 USD
Free Shipping on orders $49 and up

Crankcase Vent Valve - Rein - BMW E39 M5 E52 Z8 is a crucial component for maintaining proper crankcase ventilation and preventing harmful oil buildup in the engine. Over time, the vent valve can become clogged with oil, leading to excessive crankcase pressure, poor engine performance, and increased carbon deposits. A failing valve can result in rough idling, misfires, and blue smoke from the exhaust. Replacing the crankcase vent valve at regular intervals ensures optimal engine efficiency and longevity.

  • Prevents oil-rich vapors from entering the intake system
  • Reduces the risk of carbon buildup and engine misfires
  • Direct-fit replacement for BMW E39 M5 and E52 Z8 models
  • Ensures proper crankcase ventilation for optimal performance
  • Helps eliminate excessive crankcase pressure and oil leaks
  • Manufactured to meet or exceed OEM quality standards
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Febi - Corporate Logo
T#:381796
Part#: 11617533400
Ships in 1 Business Day
$ 72.99

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

$ 62.99 USD
Free Shipping on orders $49 and up
$ 62.99 USD
Free Shipping on orders $49 and up
Commonly referred to as the "oil separator" or PCV
Rein - Corporate Logo
T#:38195432
Part#: 11151406788
Ships in 4 Business Days
$ 34.99 USD
Free Shipping on orders $49 and up

Rein Crankcase Breather Valve | BMW E39 E52 S62 5.0L Engine is a high-quality replacement designed to address common crankcase ventilation issues in BMW engines. A failing breather valve can lead to excessive oil consumption, vacuum leaks, and even freezing in colder temperatures, causing performance issues and potential engine damage. This direct-fit replacement effectively regulates the removal of oil vapors, preventing system failures and ensuring smooth engine operation. For optimal results, it is recommended to replace all related oil separator components simultaneously.

  • Prevents oil separator freezing and vacuum leaks in cold weather
  • Ensures proper crankcase ventilation to avoid excessive oil consumption
  • Direct-fit replacement for BMW E39 and E52 S62 5.0L engines
  • Helps maintain optimal engine performance and efficiency
  • Manufactured to meet or exceed OEM quality standards
  • Recommended to replace with other oil separator components for long-term reliability
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Rein Crankcase Vent Hose (3-Way Hose)
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17771573
Part#: 11157581815
Ships in 4 Business Days
$ 41.99 USD
Free Shipping on orders $49 and up
Resistant to heat, salt, and road debris, Rein hoses are identical to OE and are more affordable.


Genuine MINI - Corporate Logo
T#:22215
Part#: 11157612996
Ships in 1-2 days
2% off MSRP $ 153.05

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

$ 150.66 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 153.05

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

$ 150.66 USD
Free Shipping on orders $49 and up
Genuine MINI VENT HOSE
Fits BMW Engines including:
N12,N16

Rein Crank Case Vent Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17605208
Part#: 11127590163
In Stock
$ 26.47 USD
Free Shipping on orders $49 and up
$ 26.47 USD
Free Shipping on orders $49 and up
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.
Crankcase Oil Separator Valve - E46 E39 E60 X3 X5 Z3 Z4
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:2855
Part#: 11617501566
Ships on Jan 11, 2027
$ 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
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Rein Crank Case Ventilation Valve - Priced Each
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17738377
Part#: 11158647299
In Stock
$ 73.99 USD
Free Shipping on orders $49 and up
Rein's OE quality breather hose helps prevent pressure build-up in the engine.

BMW Breather Valve
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:17339405
Part#: 11127537733
Ships in 2 Business Days
$ 27.99

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

$ 19.99 USD
Free Shipping on orders $49 and up
$ 19.99 USD
Free Shipping on orders $49 and up
Are you experiencing a slight loss of power? This pressure regulator valve repair kit could easily be the culprit. With a bad gasket or weak spring you could be losing pressure, resulting in less power.
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Rein Crank Case Ventilation Valve
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17704764
Part#: 11158647298
In Stock
$ 61.80

This product was last offered at the strikethrough price on
09-29-2026

$ 60.03 USD
Free Shipping on orders $49 and up
$ 60.03 USD
Free Shipping on orders $49 and up
Designed to be a direct fit for OEM hoses, Rein has replacements for an affordable cost.

Genuine MINI - Corporate Logo
T#:174245
Part#: 11157632332
In Stock
8% off MSRP $ 51.99

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

$ 47.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
8% off MSRP
$ 51.99

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

$ 47.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Genuine MINI VENT PIPE
Fits BMW Engines including:
N16

Febi - Corporate Logo
T#:56544046
Part#: 11127584128
Special Order: No Guaranteed ETA
New Item
$ 28.99 USD
Free Shipping on orders $49 and up
This replacement Crankcase Breather Hose from Febi Bilstein delivers the exact tolerances and durability required to keep your BMW’s PCV system sealed tight under boost.