Emissions System for BMW Z3 (1996-2002)

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Is your BMW throwing emissions related codes? While we're primarily a BMW performance parts house, we understand the importance of maintaining your emissions system to pass inspection in your area and keep your check engine light off. Pick up your emissions related parts from Turner Motorsport.

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Oxygen Sensor - Priced Each
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T#:35863157
Part#: 11781742050
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$ 49.99 USD
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This direct fit oxygen sensor plugs directly into your factory connector. It is the pre-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E46 E39 E38 X3 X5 Z3 Z4. Bosch # 13 477.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi 330ci
1999-2003 E39 BMW 525i 528i 530i M5
1997-2003 E39 BMW 540i
1995-2001 E38 BMW 750il
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2000-2003 E53 BMW X5 4.4i 4.6is
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
2000-2003 E52 BMW Z8
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Fuel Tank Breather Valve
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T#:591935
Part#: 13901433603
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$ 49.99 USD
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Valve between charcoal canister and throttle body
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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$ 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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Leak Detection Pump
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T#:15445597
Part#: 16136756440
In Stock
$ 153.99 USD
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Leak detection pump tests fuel containment system for vapor leaks to atmosphere. Failed pump often turns on check engine light.

Suction Pump
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T#:377591
Part#: 11617545382
In Stock
$ 59.62 USD
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A common source for vacuum leaks
Crankcase Pressure Regulator Valve
For vehicles with production date from 09/1998
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T#:373032
Part#: 11617501566
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$ 25.99 USD
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$ 25.99 USD
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Commonly referred to as the "oil separator" or PCV

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.
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#:362022
Part#: 11617504535
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$ 20.99 USD
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$ 20.99 USD
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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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URO Secondary Air Pump - BMW E36 Z3 M44
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T#:639327
Part#: 11721433818
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$ 222.86 USD
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$ 222.86 USD
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Clear trouble codes and prevent a failed emissions check
Oil Separator Hose
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T#:361564
Part#: 11151703775
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$ 24.99 USD
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$ 24.99 USD
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Runs from the valve cover to PCV valve
Upper Oil Separator Vent Tube
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T#:552486
Part#: 11617533399
Ships in 1-2 days
$ 35.99 USD
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Runs from the top of the oil separator up to rear of the intake manifold.


Vacuum Control Valve - E36 E39 E46 E53 E65 E66 E70 E83 E90
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T#:24179138
Part#: 11747810831
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$ 23.99 USD
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Vacuum control valve used in emissions control systems.
Rein Air Pump Hose - Z3
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T#:592970
Part#: 11721432867
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$ 90.99 USD
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Replace your leaking emissions hose
OEM BMW Engine Rubber Mounting 11727559515
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T#:13041
Part#: 11727559515
In Stock
$ 6.99

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

$ 4.71 USD
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$ 4.71 USD
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OEM BMW RUBBER MOUNTING:116095

Crankcase Ventilation Hose - E46 M3 Z3M Coupe S54
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T#:25109076
Part#: 11157831311
Ships on Aug 4, 2026
$ 17.99 USD
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This hose runs from the oil separator to the intake manifold and is designed to allow the recirculation of built-up oil vapors.

Due to its proximity to engine heat, this hose tends to get brittle and break as it ages. This can lead to oil leaks, vacuum leaks, misfires, and more.

If your crankcase ventilation hose is brittle or leaking, replace it with this unit from URO Parts.

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Rein PCV Hose - E36, Z3
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T#:379766
Part#: 11151740393
In Stock at Vendor
$ 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
Engine Vent Hose 11151740393
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T#:6703
Part#: 11151740393
Ships on Oct 5, 2026
$ 5.89 USD
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ENGINE VENT HOSE 11151740393

BMW Crankcase Pressure Regulator Valve
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Rein - Corporate Logo
T#:46478579
Part#: ABH0263
In Stock
$ 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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Rein - Crankcase Vent Hose E46 Z3 M Roadster, E46 Z3 M Coupe ...
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T#:34181269
Part#: 11157831311
In Stock
$ 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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Return Pipe
For vehicles with production date from 01/2000
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T#:372847
Part#: 11617504536
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$ 16.99 USD
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$ 16.99 USD
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Runs from the intake manifold back to connecting hose

Crankcase Vent Hose - From Valve Cover to Oil Separator - E46 E39 E6...
For vehicles with production date up to 10/2003
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T#:2853
Part#: 11611432559
Ships in 1 Business Day
$ 14.99 USD
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$ 14.99 USD
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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
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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
In Stock
$ 19.99 USD
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$ 19.99 USD
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Runs from the intake manifold back to connecting hose
Crankcase Ventilation Dipstick Hose - BMW M52TU M54
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T#:359570
Part#: 11157532629
Ships in 1 Business Day
$ 12.99 USD
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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.

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"Cold Climate" Crankcase Pressure Regulator Valve
Superior performance for both warm and cold climates
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T#:376770
Part#: 11617533400
Ships in 1 Business Day
$ 70.99

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

$ 40.99 USD
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$ 40.99 USD
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Commonly referred to as the "oil separator" or PCV
Crankcase Ventilation Hose
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URO - Corporate Logo
T#:378279
Part#: 11617533398
Ships in 1 Business Day
$ 21.99 USD
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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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Upper Oil Separator Vent Tube
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Rein - Corporate Logo
T#:384805
Part#: 11611440317
Ships in 3 Business Days
$ 20.30 USD
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URO Crankcase Ventilation Hose - BMW M52TU M54
For vehicle with a production date from 09/1998
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T#:377307
Part#: 11157532649
Ships in 1 Business Day
$ 12.99 USD
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$ 12.99 USD
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From oil separator to dipstick tube

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
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
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Rein Crankcase Ventilation Hose - E39, E46, E60, E83, Z3, Z4 ...
For vehicles with production date from 09/1998
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Rein - Corporate Logo
T#:359420
Part#: 11157532649
In Stock
$ 11.99 USD
Free Shipping on orders $49 and up
$ 11.99 USD
Free Shipping on orders $49 and up
ENGINE VENT HOSE 11157532649