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Rein Oil Separation & Breather System for BMW Z3 (1996-2002)

Clear BMW chassis

Every car has a crankcase vent system that is supposed to suppress oil from making it into the intake ports and combustion chamber. A good functioning system will separate oil from the atmosphere and return it to the oil pan (or collect it in a catch can) while allowing the leftover vapors to burn in the combustion chamber or recirculate through the system. This has always been known as a PCV system (Positive Crankcase Ventilation) but BMW has several other names for it - oil separator, crankcase vent (CCV), and cyclonic separator. Failures in the system will allow raw oil to enter the intake and eventually into the engine itself which can have disastrous effects on engine performance and longevity. As emissions regulations on oil and gas venting have gotten more stringent the PCV systems have gotten more complex and failure prone. And because the CCV is intertwined with other systems you could experience rough running, loss of power, higher oil consumption, misfiring, stalling, or other annoying issues. There is no replacement interval for these so we recommend inspecting your crankcase vent system as part of your regular maintenance routines. Symptoms of a bad crankcase vent are: whitish or yellowish film on the underside of the oil cap, whistling/squealing noises (not caused by a belt), suction on the oil cap that makes it hard to unscrew, large amounts of white smoke from the exhaust, and excessive oil consumption.

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CCV/PCV Breather Hoses (8)

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Crankcase Ventilation Hose Kit M54 Engine

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T#:379190

Part#: 11617504535K

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$ 79.99 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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Crankcase Vent Valve - E36 318i/is/ti, Z3 1.9

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T#:7968540

Part#: 11157501567

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$ 31.99 USD

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This crank case vent valve (CCV) / oil separator / PCV valve helps to trap oil from the crank case. If this unit becomes plugged or develops a leak it can lead to rough idle or driveability issues. This item fits the following BMWs: 1992-1998 E36 BMW 318i 318is 318ti 318ic 1997-2002 Z3 BMW Z3 1.9

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Upper Oil Separator Vent Tube

For vehicles with production date up to 10/2003 For vehicles with production date from 01/2000

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T#:378292

Part#: 11617504535

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$ 22.99 USD

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$ 22.99 USD

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

Upper Oil Separator Vent Tube

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T#:552486

Part#: 11617533399

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$ 35.99 USD

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

Rein PCV Hose - E36, Z3

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T#:379766

Part#: 11151740393

Ships in 1 Business Day

$ 9.99

This product was last offered at the strikethrough price on
03-24-2026

$ 7.19 USD

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$ 7.19 USD

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Attaches the PCV to the oil dipstick tube

Rein - Crankcase Vent Hose E46 Z3 M Roadster, E46 Z3 M Coupe ...

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T#:34181269

Part#: 11157831311

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$ 11.99 USD

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Crankcase Vent Hose ABV0329 is an essential component designed for BMW engines, ensuring optimal performance of the crankcase ventilation system. This high-quality vent hose plays a critical role in regulating and redirecting excess gases from the crankcase back into the engine's intake, reducing harmful emissions and preventing pressure buildup. Crankcase Vent Hose ABV0329 helps maintain engine efficiency and protects against potential damage caused by over-pressurization or oil leaks.

Made from durable, heat-resistant materials, this hose is built to withstand the high temperatures and pressures common in BMW engines. It is a direct-fit replacement, making installation simple and efficient for both professionals and DIY mechanics. Available from Turner Motorsport, Crankcase Vent Hose ABV0329 is the perfect solution for restoring and maintaining your BMW’s crankcase ventilation system.

Key Benefits:

Ensures proper crankcase ventilation for optimal engine performance
Reduces harmful emissions by redirecting excess gases into the intake
Prevents pressure buildup and protects against oil leaks
Constructed from durable, heat-resistant materials for long-lasting reliability
Direct-fit replacement, ensuring easy installation for various BMW models
Available from Turner Motorsport, a trusted source for BMW performance parts

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BMW Crankcase Pressure Regulator Valve

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T#:46478579

Part#: ABH0263

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$ 23.99 USD

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$ 23.99 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. 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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Hose - From Oil Separator to Oil Dipstick Tube - E46 E39

For use in cold climates

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T#:2879

Part#: 11157532629

In Stock at Vendor

$ 11.99

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

$ 10.99 USD

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$ 10.99 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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Upper Oil Separator Vent Tube

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T#:384805

Part#: 11611440317

Ships in 4 Business Days

$ 20.30 USD

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$ 20.30 USD

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

For vehicles with production date from 09/1998 For vehicles with production date from 01/2000

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T#:375092

Part#: 11617504536

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$ 19.99 USD

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$ 19.99 USD

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Runs from the intake manifold back to connecting hose

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

For vehicles with production date from 09/1998

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T#:359420

Part#: 11157532649

In Stock

$ 11.99 USD

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ENGINE VENT HOSE 11157532649

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Oil Separation & Breather System
- CCV/PCV Breather Hoses (8)

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