Emissions System for BMW 5 Series E39 (1996-2003)

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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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Turner Baffled Oil Catch Can Kit - 8oz
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Turner Motorsport - Corporate Logo
T#:398784
Part#: 022798TMS01-07KT
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however, this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed/recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.
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Turner Baffled Oil Universal Catch Can Kit - 10oz
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Turner Motorsport - Corporate Logo
T#:398786
Part#: 022798TMS01-09KT
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow.
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Turner Baffled Oil Catch Can Kit - 6oz
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Turner Motorsport - Corporate Logo
T#:398782
Part#: 022798TMS01-05KT
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however, this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed/recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.
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Turner Baffled Oil Catch Can - Standard Flow 8oz
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Turner Motorsport - Corporate Logo
T#:38419062
Part#: 022798TMS01-02
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$ 107.76 USD
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system  baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.

Our catch can was also designed with the idea that the cans fill level can easily be checked with a top mounted dipstick and an optional use bottom drain hole. The drain hole can be used with a valve and hose to be mounted at a lower area of the vehicle so when you're doing an oil change you can drain the catch can.

Features:

  • 6061-T6 billet machined body, anodized black for lasting protection and appearance
  • Strategically positioned 4 chamber baffle system maximizes oil / air separation 
  • Knurled and black anodized oil dipstick makes inspecting oil volume of reservoir clean and simple
  • Sealed with a pre-installed viton O-Ring
  • Includes 2.5mm allen key to remove baffle plates for cleaning
  • Engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can
  • Closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation
  • Optional use drain hole (valve and hose sold separately, watch for our model specific drain kits!)
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Turner Baffled Oil Catch Can - Standard Flow 6oz
10X Entries For Our Spin To Win Sweepstakes!
Turner Motorsport - Corporate Logo
T#:38419077
Part#: 022798TMS01-01
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$ 87.14 USD
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$ 87.14 USD
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow. The inner baffle orientation can be easily adjusted to flow in both directions in case you decide to move this catch can to a different vehicle. A 4 chamber system  baffle system inside the catch can was engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can. Having a closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation.

Our catch can was also designed with the idea that the cans fill level can easily be checked with a top mounted dipstick and an optional use bottom drain hole. The drain system comes complete with a valve and hose to be mounted at a lower area of the vehicle so when you're doing an oil change you can drain the catch can.

Features:

  • 6061-T6 billet machined body, anodized black for lasting protection and appearance
  • Strategically positioned 4 chamber baffle system maximizes oil / air separation 
  • Knurled and black anodized oil dipstick makes inspecting oil volume of reservoir clean and simple
  • Sealed with a pre-installed viton O-Ring
  • Includes 2.5mm allen key to remove baffle plates for cleaning
  • Engineered to create multiple changes in the direction of airflow within the separator to cause oil droplets to fall out of suspension before exiting the catch can
  • Closed / recirculated design reduces oil ingestion and promotes cleaner emissions and odor-less operation
  • Optional use drain hole - drain kit included!
  • Universal mounting kit
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Turner Baffled Oil Catch Can - Standard Flow 10oz
10X Entries For Our Spin To Win Sweepstakes!
Turner Motorsport - Corporate Logo
T#:38419079
Part#: 022798TMS01-03
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$ 199.99
$ 154.99 USD
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$ 199.99
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When we designed this catch we wanted to have the most function options available, the best separation method, and the easiest to service. The Turner engineered catch cans offer a pre-setup design based ion desired flow direction, however this does not limit you to this flow.
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Bosch - Corporate Logo
T#:19449
Part#: 16137193479
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Replace the defective leak diagnosis pump -often referred to as the "DTML pump" - on your BMW with this OEM unit from Bosch. This part detects vapor leaks in the fuel evaporative system.

This item fits the following BMWs:
2008+ E82 BMW 128i 135i 135is 1M Coupe
2002-2005 E46 BMW 325i 325ci 325xi 330i 330ci 330xi M3
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2007-2013 E93 BMW 328i 335i M3 - Convertible
2002-2003 E39 BMW 525i 528i 530i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i M5
2010-3/2012 F07 BMW 535i GT, 535i xDrive GT, 550i GT, 550i xDrive GT
3/2012+ F07 BMW 550i GT, 550i xDrive GT
2011-3/2012 F10 BMW 528i (N52) 528i xDrive 535i 535i xDrive 550i 550i xDrive
3/2012+ F10 BMW 550i 550i xDrive
2004-2010 E63 BMW 645ci 650i M6
2012-3/2012 F12 BMW 640i 650i 650i xDrive
3/2012+ F12 BMW 650i 650i xDrive
2002-2006 E65 BMW 745i 745li 750i 750li 760i 760li
2009+ F01 BMW 740i 740li 750i 750li 750i xDrive 750li xDrive
2013+ E84 BMW X1 sDrive28i X1 xDrive28i X1 xDrive35i
2004-2010 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2011 F25 BMW X3 xDrive28i
2011+ F25 BMW X3 xDrive35i
2002-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35i X5 xDrive48i X5 xDrive50i X5M
2008+ E71 BMW X6 xDrive35i X6 xDrive50i X6M
2002-2002 Z3 BMW Z3 2.5i Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
2009+ Z4 BMW Z4 sDrive28i Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is
2002-2003 E52 BMW Z8 Roadster
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Bosch - Corporate Logo
T#:2998
Part#: 11781742050
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This direct fit Bosch 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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Schwaben - Corporate Logo
T#:368923
Part#: FO-78
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The Schwaben oxygen sensor wrench has a six-point pivot head to provide a secure grip on stubbornly tight oxygen sensors located in awkward, inaccessible locations.

Bosch - Corporate Logo
T#:2118
Part#: 11781433940
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This is the post-cat oxygen sensor for cylinders 4-6 for BMW E46 E39 X3 X5 Z3 Z4. Bosch # 15 109.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325xi 328i 328ci 330i 330ci 330xi
2001-3/2003 E46 BMW 325i 325ci only for cars with M54 engine
1999-2003 E39 BMW 528i 525i 530i
2004-2006 E83 BMW X3 2.5 - Bank 1 Only
2004-2006 E83 BMW X3 3.0i - Bank 1 - Automatic Transmission Only
2000-2006 E53 BMW X5 3.0i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
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Bremmen Parts - Corporate Logo
T#:2528129
Part#: 11617533400S1
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$ 124.99 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 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. Don't forget to order a valve cover gasket, throttle body gasket, and a new intake boot to make your separator change easier and more comprehensive.
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Genuine BMW - Corporate Logo
T#:6690
Part#: 11151703775
Ships in 1 day
10% off MSRP $ 30.25
$ 27.26 USD
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$ 27.26 USD
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This Crankcase Vent Hose - From Valve Cover to Oil Separator fits BMWs with the M52 or S52 6 cylinder engines.
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:
1996-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1996-1998 E36/7 BMW Z3 2.8
1996-2000 E36/7 BMW M Roadster M Coupe
1997-1998 E39 BMW 525i 528i 530i 540i M5
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ECS - Corporate Logo
T#:383333
Part#: 003779ECS06KT
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If you don't wish to fabricate intricate brackets to mount your ECS Baffled Oil Catch Can we have the solution. ECS's three-piece bracket kit includes two options for securing the catch can. Choose from either a flat parallel mounting plate or a bent 90° mounting plate to give you 360° rotation for an infinitely adjustable mounting location.
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Genuine BMW Oxygen Sensor
For vehicles with production date up to 4/1998. 2 used in the exhaust manifold, 2 locat...
Genuine BMW - Corporate Logo
T#:367737
Part#: 11781427884
Ships Jun 30, 2025
8% off MSRP $ 424.99
$ 391.99 USD
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8% off MSRP $ 424.99
$ 391.99 USD
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Genuine BMW - Corporate Logo
T#:348228
Part#: 11157532629
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$ 37.01 USD
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URO PCV Breather Hose Kit - E39, E46, E83
We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:592719
Part#: BMM54PCVKIT
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Comes with everything needed to refresh the PCV System!

Genuine BMW - Corporate Logo
T#:13028
Part#: 11617533399
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GENUINE BMW CONNECTING LINE:111060
Febi-Bilstein Oil Separator/CCV Kit with Hoses - 11151703484 ...
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Febi - Corporate Logo
T#:28337855
Part#: 11151703484KIT
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$ 74.99 USD
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Rubber breather pipes in various BMW applications are susceptible to cracking. Over time, engine heat and weather conditions can weaken these hoses, leading to breaks or leaks. This results in significant vacuum leaks that can severely affect engine performance.

Moreover, BMW faces a problem with oil separators freezing in cold weather, particularly if the engine isn't adequately warmed up during driving. Typical signs include a howling noise and subsequent oil leaks.

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Bosch - Corporate Logo
T#:12647
Part#: 11781742051
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$ 96.99 USD
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This direct fit Bosch oxygen sensor plugs directly into your factory connector. It is the post-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. Bosch # 13475.

This item fits the following BMWs:
1997-2003 E39 BMW 540i M5
1996-2001 E38 BMW 740i 740il 750il
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Genuine BMW - Corporate Logo
T#:19233
Part#: 11617533398
Ships Jun 30, 2025
$ 47.99 USD
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Genuine BMW ENGINE VENT PIPE

Genuine BMW - Corporate Logo
T#:348236
Part#: 11617504536
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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

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Genuine BMW - Corporate Logo
T#:2811
Part#: 11617501563K
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When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes and poor idle. This crankcase vent valve ( also know as Oil separator valve or PCV ) fits E39 540i 97-03 E38 740i 96-01 E31 840ci 96-98.

This kit includes the following parts:
1 x 11617501563 - Intake Manifold Rear Cover with Oil Separator Valve
1 X Rear Intake Manifold Gasket

This item fits the following BMWs:
1997-2003 E39 BMW 540i
1996-2001 E38 BMW 740i 740il
1996-1998 E31 BMW 840ci
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ECS Tuning Baffled Oil Catch Can - 8oz
10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:13496655
Part#: 003779ECS05-02
In Stock
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$ 204.29 USD
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Sale - Save 10% $ 226.99
$ 204.29 USD
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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).
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Pierburg - Corporate Logo
T#:362205
Part#: 11747810831
In Stock
$ 40.99 USD
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This electric valve serves one of several purposes depending on which car it is used on. Please read the application listings below to ensure you are purchasing the correct part. 

Pierburg pumps are some of the most trusted and widely used on the market. From fuel, water, air and vacuum Pierburg has you covered with OE quality and reliable performance year after year.


This item fits the following BMWs:
Secondary Air System Valve
1996-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2003-2005 E46 BMW 325i 325ci (M56)
1997-2003 E39 BMW 525i 528i 530i 
2000-2006 E53 BMW X5 3.0i 
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 
1997-2000 Z3 BMW M Roadster M Coupe (S52)

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Suction Pump
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URO - Corporate Logo
T#:377591
Part#: 11617545382
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$ 57.83 USD
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A common source for vacuum leaks
Genuine BMW Crankcase Ventilation Hose
For vehicles with production date from 09/1998
Genuine BMW - Corporate Logo
T#:367705
Part#: 11611432559
Ships Jun 30, 2025
$ 47.99 USD
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$ 47.99 USD
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Bremmen Oil Separator Kit - Level 1 - E39 E46 E83 Z3 Z4
For vehicles with production date from 09/1998
Bremmen Parts - Corporate Logo
T#:641646
Part#: 11617501566S1
Ships on Jul 18, 2025
$ 91.99 USD
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$ 91.99 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 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
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Fuel Tank Breather Valve
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URO - Corporate Logo
T#:591935
Part#: 13901433603
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Valve between charcoal canister and throttle body

Febi-Bilstein "Cold Climate" CCV Kit - 11617533400S1 ...
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:28304463
Part#: 11617533400S1
In Stock at Vendor
$ 212.99 USD
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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.

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Crankcase Vent Return Hose - E46 E39 E60 Z3
For vehicles with production date from 01/2000
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:12449
Part#: 11617504536
In Stock at Vendor
$ 29.99 USD
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$ 29.99 USD
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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

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Genuine BMW - Corporate Logo
T#:13024
Part#: 11617503666
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$ 21.99 USD
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Genuine BMW Hose Elbow -
This item fits the following BMW Chassis:
E39,E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M54

Genuine BMW - Corporate Logo
T#:12551
Part#: 11617501563
Ships in 1 day
4% off MSRP $ 101.99
$ 97.99 USD
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4% off MSRP $ 101.99
$ 97.99 USD
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An integral part of the emissions system, the PCV valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes, and poor idle.
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Genuine BMW Upper Oil Separator Vent Tube
For vehicles with production date from 01/2000
Genuine BMW - Corporate Logo
T#:7025
Part#: 11617504535
Ships Jun 30, 2025
Sale - Save 4% $ 41.99
$ 40.43 USD
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Sale - Save 4% $ 41.99
$ 40.43 USD
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Genuine BMW Connecting Line -
This item fits the following BMW Chassis:
E39,E46,E53 X5,E83 X3,E85

Fits BMW Engines including:
M52,M54


Genuine BMW Crankcase Pressure Regulator Valve
For vehicles with production date from 09/1998
Genuine BMW - Corporate Logo
T#:367709
Part#: 11617501566
Ships Jun 30, 2025
Sale - Save 4% $ 90.99
$ 87.78 USD
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Sale - Save 4% $ 90.99
$ 87.78 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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Bosch Oxygen Sensor - Mounts Before Catalytic - E36 Z3 M44, E31, E38,...
For vehicles with production date up to 09/1998
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Bosch - Corporate Logo
T#:13046
Part#: 11781247406
Ships on Oct 9, 2025
$ 79.99 USD
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$ 79.99 USD
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This direct fit Bosch oxygen sensor plugs directly into your factory connector. Fits M44 engine Z3 and 3 series and M62 engine E39, E38, E31 with V8 engines. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. Bosch part number 13559.

This is the pre-catalytic converter oxygen sensor

This item fits the following BMWs:
1996-1998 E36 BMW 318i 318is 318ti 318ic
1997-1998 E39 BMW 540i
1996-2001 E38 BMW 740i 740il
1996-1998 Z3 BMW Z3 1.9
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Mishimoto - Corporate Logo
T#:372557
Part#: MMOCCCF
In Stock
9% off MSRP $ 179.00
$ 162.99 USD
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9% off MSRP $ 179.00
$ 162.99 USD
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Universal kit with a catch can and rubber hose; for retrofitting on a variety of vehicles. Carbon fiber catch can prevents a harmful buildup of oil inside of the turbocharger, intake manifold, intercooler and piping. Separates oil particles from PCV/CCV air Defends intercooler, intake system, and essential components from oil blow-by Made from lightweight carbon fiber Compact design makes for easy engine bay placement Checking fluid levels made easy with built in sight tube Comes complete with mounting bracket, hose, all necessary clamps, fittings, and mounting hardware Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Upper Oil Separator Vent Tube
For vehicles with production date from 01/2000
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:378292
Part#: 11617504535
In Stock
$ 20.99 USD
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$ 20.99 USD
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Runs from the top of the oil separator up to intake manifold.
Mishimoto - Corporate Logo
T#:597051
Part#: MMOCCLA
In Stock
9% off MSRP $ 141.00
$ 127.99 USD
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9% off MSRP $ 141.00
$ 127.99 USD
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WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Packaged by Turner - Corporate Logo
T#:24344785
Part#: M54OILSEPKT
Ships on Sep 15, 2025
Sale - Save 25% $ 161.99
$ 121.43 USD
Free Shipping on orders $49 and up
Sale - Save 25% $ 161.99
$ 121.43 USD
Free Shipping on orders $49 and up
If you need to perform a complete oil separator system service, this Level 2 kit provides you with all of the main components necessary to service your engine oil separator system. This Level 2 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 Throttle body gasket Throttle body inlet boot ICV rubber grommet Oil dipstick tube o-ring seal It is highly recommended to replace the oil dipstick tube with the updated design by BMW as this also a common place for sludge to build up.
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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
For vehicles with production date from 09/1998
Bavarian Autosport - Corporate Logo
T#:640207
Part#: 11617501566
In Stock
Sale - Save 25% $ 31.99
$ 23.99 USD
Free Shipping on orders $49 and up
Sale - Save 25% $ 31.99
$ 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. 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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Packaged by Turner - Corporate Logo
T#:555298
Part#: 11617501566KT6
Ships on Sep 15, 2025
Sale - Save 25% $ 170.99
$ 128.18 USD
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Sale - Save 25% $ 170.99
$ 128.18 USD
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The plastic hoses and oil separator can crack or become faulty, leading to vacuum leaks or oil leaks. This is caused by the stress the plastic components are exposed to during heating and cooling cycles, especially if the vehicle is not brought up to operating temperature during driving in cold weather climates.

This kit includes the needed hoses, oil separator, mounting grommet, and hardware.

Fits the following BMWs:
2000-2003 E39 BMW 530i

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Bavarian Autosport - Corporate Logo
T#:640206
Part#: 11617501563
In Stock
Sale - Save 25% $ 46.99
$ 35.24 USD
Free Shipping on orders $49 and up
Sale - Save 25% $ 46.99
$ 35.24 USD
Free Shipping on orders $49 and up
An integral part of the emissions system, the PCV valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. When the crankcase vent valve fails it can cause excessive oil consumption, engine fault codes, and poor idle. 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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Bavarian Autosport - Corporate Logo
T#:579869
Part#: 54546
In Stock
Sale - Save 10% $ 25.99
$ 23.39 USD
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Sale - Save 10% $ 25.99
$ 23.39 USD
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Bosch Leak Diagnosis Pump - E39, E46, Z3
For vehicles with production date up to 09/2001
We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:377059
Part#: 16136756440
In Stock at Vendor
Sale - Save 3% $ 195.99
$ 189.96 USD
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Sale - Save 3% $ 195.99
$ 189.96 USD
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Located under the vehicle, near the transmission bellhousing or in the rear.

"Cold Climate" Oil Separator Kit
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URO - Corporate Logo
T#:377838
Part#: 11617534237
Ships in 1 Business Day
Sale - Save 4% $ 65.99
$ 63.44 USD
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Sale - Save 4% $ 65.99
$ 63.44 USD
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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.
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Crankcase Pressure Regulator Valve
For vehicles with production date from 09/1998
We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:373032
Part#: 11617501566
Ships in 1 Business Day
Sale - Save 6% $ 24.99
$ 23.41 USD
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Sale - Save 6% $ 24.99
$ 23.41 USD
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Commonly referred to as the "oil separator" or PCV
Pierburg Secondary Air Pump - E39
For vehicles with production date from 09/1998
Pierburg - Corporate Logo
T#:377256
Part#: 11721433959
In Stock at Vendor
$ 323.22 USD
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$ 323.22 USD
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Common source of emissons related issues
Genuine BMW - Corporate Logo
T#:12627
Part#: 11151705272
Ships in 1 day
8% off MSRP $ 75.99
$ 69.99 USD
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8% off MSRP $ 75.99
$ 69.99 USD
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Genuine BMW Oil Separator -
This item fits the following BMW Chassis:
E38,E39

Fits BMW Engines including:
M62



Genuine BMW - Corporate Logo
T#:367881
Part#: 16137193479
Ships in 1 day
Sale - Save 3% $ 222.99
$ 215.63 USD
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Sale - Save 3% $ 222.99
$ 215.63 USD
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Upgrade your BMW's fuel containment system with the Turner Motorsport Genuine BMW Leak Detection Pump. This essential component tests for vapor leaks to the atmosphere, ensuring optimal performance. A failed pump can trigger the check engine light, compromising the vehicle's efficiency.

Key Benefits:

  • Genuine BMW quality for precise fit and reliable performance.
  • Tests fuel containment system for vapor leaks.
  • Helps avoid triggering the check engine light.

Ensure the health of your BMW's fuel system with the Turner Motorsport Genuine BMW Leak Detection Pump.

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Upper Oil Separator Vent Tube
2X Entries For Our Spin To Win Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:552486
Part#: 11617533399
Ships in 1 day
$ 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.