Oil Separation & Breather System for BMW Z Series E85/6 (2003-2008)

Comprehensive Constant Pressure Valve Replacement Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:557341

Part#: 11111318185TMSKT

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$ 84.32 USD

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When your CPV O-ring fails it causes a slow oil leak on the passenger side of the engine, making an oily mess that frequently resembles a rear main seal leak. Replacing the CPV with an upgraded o-ring ensures a long-term solution to this common problem.

The factory o-ring over time fails from heat cycling and oil exposure due to the Buna rubber used in OEM o-rings, while the included Viton Fluoroelastomer is resistant to a much higher temperature to ensure prolonged life without leaking.

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Genuine BMW Vent Hose - 11617831930 - E46,E85,E46 M3,E85 Z4M ...

T#:14624

Part#: 11617831930

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Sale - Save 8% $ 124.99

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$ 115.05 USD

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Vents gases from the crankcase back into the intake.
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.

Genuine BMW Vent Hose
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4

Fits BMW Engines including:
S54

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Rein Crankcase Ventilation Return Pipe - E60, E90, Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:402081

Part#: 11157567801

Ships in 4 Business Days

Sale - Save 8% $ 81.38

This product was last offered at the strikethrough price on
08-13-2026

$ 75.04 USD

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Located under intake manifold

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

10X Entries Into Our F80 M3 Sweepstakes

T#:640207

Part#: 11617501566

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05-03-2026

$ 26.39 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. 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.

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Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

10X Entries Into Our F80 M3 Sweepstakes

T#:638072

Part#: 11617504536

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05-03-2026

$ 21.59 USD

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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.

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Genuine BMW Extraction Line - E60 E91 E90 E91 N52 3.0L, Z4 N52 3.0L ...

T#:22212

Part#: 11157537701

In Stock

Sale - Save 5% $ 55.74

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

$ 52.99 USD

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Genuine BMW Extraction Line -
This item fits the following BMW Chassis:
E85,E86,E90

Fits BMW Engines including:
N52

Genuine BMW Upper Oil Separator Vent Tube

For use in cold climates

T#:13028

Part#: 11617533399

In Stock

Sale - Save 8% $ 41.99

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$ 38.69 USD

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GENUINE BMW CONNECTING LINE:111060

Crankcase Ventilation Hose Kit M54 Engine

2X Entries Into Our F80 M3 Sweepstakes

T#:379190

Part#: 11617504535K

Ships in 2 Business Days

Sale - Save 5% $ 79.99

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

$ 75.99 USD

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Turner Motorsport presents the Crankcase Ventilation System Refresh Kit for BMW owners experiencing malfunctioning or aged CCV systems. This comprehensive kit includes all necessary hoses to complete a refresh, ensuring optimal performance and reliability for your BMW's CCV system.

Addresses malfunctioning CCV systems
Ensures proper ventilation of the crankcase
Comprehensive kit includes all necessary hoses
Restores performance and reliability
Compatible with various BMW models

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Rein Crank Case Vent Hose - E60, E82, E83, E88, E90, E91, E92, E93, Z...

2X Entries Into Our F80 M3 Sweepstakes

T#:402018

Part#: 11157559528

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08-31-2026

$ 46.54 USD

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Over time this hose can become clogged and blocked up causing running problems. This is a direct factory replacement for the PCV hose.

Rein Crankcase Vent Hose

2X Entries Into Our F80 M3 Sweepstakes

T#:17804807

Part#: 11157522931

In Stock

Sale - Save 18% $ 44.99

This product was last offered at the strikethrough price on
08-23-2026

$ 37.04 USD

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Manufactured with high-quality materials to withstand heat, dirt, oil, and other debris.

Genuine BMW Crankcase Ventilation Dipstick Hose

For use in cold climates

T#:348228

Part#: 11157532629

In Stock

Sale - Save 10% $ 39.99

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

$ 36.17 USD

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Crankcase Oil Separator Hose - E9x, E60, E85 with N52 engine ...

T#:20631

Part#: 11157522931

In Stock

Sale - Save 19% $ 154.99

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

$ 125.99 USD

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This is the oil separator hose that connects the crank case oil separator to the oil sump pipe for BMW's with the N52 6 cylinder engine.
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.

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 E85 BMW Z4 3.0i Z4 3.0si

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Upper Oil Separator Vent Tube

2X Entries Into Our F80 M3 Sweepstakes

T#:378292

Part#: 11617504535

Ships in 2 Business Days

Sale - Save 5% $ 22.99

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

$ 21.84 USD

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Runs from the top of the oil separator up to intake manifold.

Upper Oil Separator Vent Tube

2X Entries Into Our F80 M3 Sweepstakes

T#:552486

Part#: 11617533399

Ships in 1-2 days

Sale - Save 5% $ 35.99

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

$ 34.19 USD

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Runs from the top of the oil separator up to rear of the intake manifold.

OEM Rein Oil Separator Vent Hose - E60/61 E90/91 Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:13029

Part#: 11617559530

Ships in 4 Business Days

Sale - Save 38% $ 66.99

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

$ 41.79 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. Replace this and all the other components of the oil separator system to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable.

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Oil Separator Kit - Level 1

10X Entries Into Our F80 M3 Sweepstakes

T#:15710823

Part#: E46M5411_61KT

In Stock

Sale - Save 24% $ 123.99

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

$ 93.71 USD

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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. 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. ur 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

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Oil Separator Hose - E46, Z4

10X Entries Into Our F80 M3 Sweepstakes

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

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Cold climate version for extra insulation! Fits all E46 and Z4 chassis equipped with an M54 engine.

BMW Crankcase Pressure Regulator Valve

2X Entries Into Our F80 M3 Sweepstakes

T#:46478579

Part#: ABH0263

In Stock

Sale - Save 7% $ 23.99

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

$ 22.35 USD

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$ 23.99

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$ 22.35 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. Replace this and all the other components of the oil separator system to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable.

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Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...

10X Entries Into Our F80 M3 Sweepstakes

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

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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.

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Rein Return Pipe - E39, E46, E53, E60, E83, Z3, Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:375092

Part#: 11617504536

In Stock

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

$ 18.99 USD

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Runs from the intake manifold back to connecting hose

Hose - From Oil Separator to Oil Dipstick Tube - E46 E39

For use in cold climates

2X Entries Into Our F80 M3 Sweepstakes

T#:2879

Part#: 11157532629

In Stock at Vendor

Sale - Save 13% $ 11.99

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

$ 10.44 USD

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This is the updated hose that goes from the Crankcase Oil Separator Valve to the oil dipstick tube. This tube tends to get plugged with oil sludge and becomes brittle and cracks. It fits E46 323i 323ci 325i (M54) 325ci (M54) 325xi 328i 328ci 330i 330ci 330xi - E39 525i 530i - E60 525i 530i 2004-2005 - X3 2.5i 3.0i 2004-2006 - Z3 2.5i 3.0i - Z4 2.5i 3.0i 2003-2006.
In german, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

This item fits the following BMWs:
2001-2005 E46 BMW 325i 325ci 325xi Only for cars with M54 engine
1999-2005 E46 BMW 323i 323ci 328i 328ci 330i 330ci 330xi
2001-2003 E39 BMW 525i 530i
2004-2005 E60 BMW 525i 525xi 530i 530xi
2004-2006 E83 BMW X3 2.5i X3 3.0i
2001-2002 Z3 BMW Z3 2.5i Z3 3.0i
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i

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Oil Separator Valve

2X Entries Into Our F80 M3 Sweepstakes

T#:594299

Part#: 11617531423

Ships in 4 Business Days

Sale - Save 5% $ 120.81

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

$ 114.77 USD

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$ 120.81

This product was last offered at the strikethrough price on
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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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Rein Crankcase Ventilation Hose - E39, E46, E60, E83, Z3, Z4 ...

2X Entries Into Our F80 M3 Sweepstakes

T#:359420

Part#: 11157532649

In Stock

Sale - Save 5% $ 11.99

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

$ 11.39 USD

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$ 11.99

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ENGINE VENT HOSE 11157532649

Project Cars

SELECT YOUR BMW

Oil Separation & Breather System for BMW Z Series E85/6 (2003-2008)

Sub-Categories

Comprehensive Constant Pressure Valve Replacement Kit

Genuine BMW Vent Hose - 11617831930 - E46,E85,E46 M3,E85 Z4M ...

Rein Crankcase Ventilation Return Pipe - E60, E90, Z4

Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3

Genuine BMW Extraction Line - E60 E91 E90 E91 N52 3.0L, Z4 N52 3.0L ...

Genuine BMW Upper Oil Separator Vent Tube

Crankcase Ventilation Hose Kit M54 Engine

Rein Crank Case Vent Hose - E60, E82, E83, E88, E90, E91, E92, E93, Z...

Rein Crankcase Vent Hose

Genuine BMW Crankcase Ventilation Dipstick Hose

Crankcase Oil Separator Hose - E9x, E60, E85 with N52 engine ...

Upper Oil Separator Vent Tube

Upper Oil Separator Vent Tube

OEM Rein Oil Separator Vent Hose - E60/61 E90/91 Z4

Oil Separator Kit - Level 1

Oil Separator Hose - E46, Z4

BMW Crankcase Pressure Regulator Valve

Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...

Rein Return Pipe - E39, E46, E53, E60, E83, Z3, Z4

Hose - From Oil Separator to Oil Dipstick Tube - E46 E39

Oil Separator Valve

Rein Crankcase Ventilation Hose - E39, E46, E60, E83, Z3, Z4 ...

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