Emissions System for BMW Z Series E85/6 (2003-2008)

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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 Universal Baffled Oil Catch Can Mounting Bracket Kit - BMW & M...
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ECS - Corporate Logo
T#:383333
Part#: 003779ECS06KT
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$ 71.99 USD
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$ 95.99

This product was last offered at the strikethrough price on
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$ 71.99 USD
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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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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

URO Oil Separator Valve - BMW E60 E90 Z4 N52
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T#:592960
Part#: 11617531423
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$ 57.12 USD
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$ 57.12 USD
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he 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 Crankcase Vent Hose - 11157522931
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T#:26171673
Part#: 11157522931
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$ 39.79 USD
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Connecting the cyclone oil separator to the engine valve cover, this hose is crucial for maintaining optimal engine performance. Over time, exposure to heat from engine components can cause the plastic hose to become brittle, resulting in cracks, tears, or splits. These issues can lead to vacuum and oil leaks, triggering a check engine light.

  • High-quality replacement for BMW crankcase vent hose
  • Ensures optimal engine performance
  • Resistant to heat and wear
  • Helps prevent vacuum and oil leaks
  • Easy to install
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ECS Tuning Baffled Oil Catch Can - 8oz
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ECS - Corporate Logo
T#:13496655
Part#: 003779ECS05-02
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Sale - Save 10% $ 238.99

This product was last offered at the strikethrough price on
06-14-2026

$ 215.09 USD
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Sale - Save 10%
$ 238.99

This product was last offered at the strikethrough price on
06-14-2026

$ 215.09 USD
Free Shipping on orders $49 and up
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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Crankcase Pressure Regulator Valve
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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
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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 Crankcase Ventilation Return Hose - 11157567801
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T#:26171675
Part#: 11157567801
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$ 39.99 USD
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For your BMW's optimal performance, ensure the functionality of the hose connecting the oil dipstick to the crankcase vent valve. Positioned below the intake manifold, this hose is susceptible to clogging with oil film and condensation, leading to potential failure over time. Cracks and swelling in old hoses can result in oil and vacuum leaks, compromising engine performance.

  • Essential component for BMW engine functionality
  • Prevents clogging and potential hose failure
  • Minimizes oil and vacuum leaks
  • Convenient replacement when replacing crankcase vent valve
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Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm) - Priced Eac...
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ECS - Corporate Logo
T#:637408
Part#: 028092ECS11AKT
In Stock
Sale - Save 25% $ 3.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2.99 USD
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Sale - Save 25%
$ 3.99

This product was last offered at the strikethrough price on
06-14-2026

$ 2.99 USD
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Upgrade your exhaust system with the Stainless Steel Oxygen Sensor (O2) Weld Bung (M18x1.5mm). This high-quality weld bung is made from stainless steel, ensuring durability and resistance to corrosion. It features M18x1.5mm threads, making it compatible with most oxygen sensors. Perfect for custom exhaust setups or replacing damaged bungs, this weld bung is a must-have for any automotive enthusiast.

  • Made from high-quality stainless steel for durability and corrosion resistance
  • M18x1.5mm threads ensure compatibility with most oxygen sensors
  • Ideal for custom exhaust setups or replacing damaged bungs
  • Essential for automotive enthusiasts looking to upgrade their exhaust system
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1.5mm X 51mm Metric Buna-N 70 O-ring
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ECS - Corporate Logo
T#:388889
Part#: N1.50X051
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Sale - Save 25% $ 5.99

This product was last offered at the strikethrough price on
06-13-2026

$ 4.49 USD
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$ 5.99

This product was last offered at the strikethrough price on
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$ 4.49 USD
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1.5mm X 51mm Metric Buna-N 70 O-ring is the perfect sealing solution for various industrial applications. Made from high-quality Buna-N material, this O-ring provides reliable sealing performance, ensuring leak-free connections. With its metric sizing and 70 durometer hardness, it offers versatility and durability for a wide range of uses.

  • High-quality Buna-N material
  • Reliable sealing performance
  • Metric sizing for versatility
  • 70 durometer hardness for durability
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Crankcase Vent Hose - From Valve Cover to Oil Separator - E46 E39 E6...
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T#:2853
Part#: 11611432559
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$ 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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"Cold Climate" Crankcase Pressure Regulator Valve
Superior performance for both warm and cold climates
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URO - Corporate Logo
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
Return Pipe
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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 Ventilation Dipstick Hose - BMW M52TU M54
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T#:359570
Part#: 11157532629
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$ 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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Secondary Air Pump
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T#:37757223
Part#: 11727571591
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$ 181.99 USD
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**Features:** - Optimized design for maximum airflow - Precision bearings ensure quiet operation with minimal vibration - Durable, high-quality housing for long-lasting performance

URO Crankcase Ventilation Hose - BMW M52TU M54
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T#:377307
Part#: 11157532649
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$ 12.99 USD
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$ 12.99 USD
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From oil separator to dipstick tube
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.
Show More Show Less